reglab/statecodes huggingface dataset:
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 1 - GENERAL PROVISIONS › Section 246-290-040 - Engineering requirements

Current through Register Vol. 24-14, July 15, 2024
(1) Purveyors
				  shall ensure that all work required to be prepared under the direction of a
				  professional engineer, including, but not limited to, water system plans,
				  project reports, corrosion control recommendation reports, tracer studies,
				  construction documents and construction completion reports, and engineering
				  design review reports for distribution-related submittal exceptions, is
				  prepared under the direction, and bears the seal, date, and signature of a
				  professional engineer:
(a) Licensed in the
				  state of Washington under chapter 18.43 RCW; and
(b) Having specific expertise regarding
				  design, operation, and maintenance of public water systems.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 1 - GENERAL PROVISIONS › Section 246-290-060 - Variances, exemptions, and waivers

Current through Register Vol. 24-14, July 15, 2024
(1)
				  General.
(a) The state board of health may
				  grant variances, exemptions, and waivers of the requirements of this chapter
				  according to the procedures outlined in subsection (5) of this section. See WAC
				  246-290-300(4)(g) and
				  (7)(f) for monitoring waivers.
(b) Consideration by the board of requests
				  for variances, exemptions, and waivers shall not be considered adjudicative
				  proceedings as that term is defined in chapter 34.05 RCW.
(c) Statements and written material regarding
				  the request may be presented to the board at or before the public hearing where
				  the application will be considered. Allowing cross-examination of witnesses
				  shall be within the discretion of the board.
(d) The board may grant a variance,
				  exemption, or waiver if it finds:
(i) Due to
				  compelling factors, the public water system is unable to comply with the
				  requirements; and
(ii) The granting
				  of the variance, exemption, or waiver will not result in an unreasonable risk
				  to the health of consumers.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-100 - Water system plan

Current through Register Vol. 24-14, July 15, 2024
(1) The purpose of
				  this section is to establish a uniform process for purveyors to:
(a) Demonstrate system capacity as defined in
				  WAC 246-290-010;
(b) Demonstrate how the system will address
				  present and future needs in a manner consistent with other relevant plans and
				  local, state, and federal laws, including applicable land use plans;
(c) Establish eligibility for funding under
				  chapter 246-296 WAC.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-105 - Small water system management program

Current through Register Vol. 24-14, July 15, 2024
(1) The purpose of a small water system
				  management program is to:
(a) Demonstrate the
				  system's operational, technical, managerial, and financial capability to
				  achieve and maintain compliance with all relevant local, state, and federal
				  plans and regulations; and
(b)
				  Establish eligibility for funding under chapter 246-296 WAC.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-106 - Duty to provide service

Current through Register Vol. 24-14, July 15, 2024
Municipal water suppliers required to submit a water
					 system plan for department approval under WAC
					 246-290-100(2) 
					 must also include in the water system plan the provisions of this section as
					 required under
					 RCW
					 43.20.260. In approving a water system plan,
					 the department shall ensure that water service to be provided by the water
					 system for any new industrial, commercial, or residential use is consistent
					 with local plans and regulations.
(1)
				  A municipal water supplier has a duty to provide retail water service to all
				  new service connections within its retail service area if:
(a) It can be available in a timely and
				  reasonable manner;
(b) There is
				  sufficient water rights to provide water service;
(c) There is sufficient capacity to serve the
				  water in a safe and reliable manner as determined by the department;
				  and
(d) It is consistent with the
				  requirements of local plans and regulations and, for water service by the water
				  utility of a city or town, with the utility service extension ordinances of the
				  city or town.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-107 - Place of use expansion

Current through Register Vol. 24-14, July 15, 2024
The place of use of a surface or groundwater right may be
					 expanded to include any portion of the approved service area that was not
					 previously within the place of use for the water right when documented in an
					 approved planning or engineering document under chapter 43.20 RCW or in
					 accordance with procedures adopted under chapter 70A.100 RCW. This occurs as an
					 effect of the department's approval of a service area identified in a water
					 system plan, water system plan amendment, small water system management
					 program, engineering document, or as an effect of the local legislative
					 authority's approval of a service area as part of a coordinated water system
					 plan.
(1) The following conditions
				  must be met:
(a) The municipal water supplier
				  is in compliance with the terms of the water system plan or small water system
				  management program, including those regarding water use efficiency.
(b) The alteration of the place of use is not
				  inconsistent regarding an area added to the place of use with any local plans
				  and regulations.
(c) The alteration
				  of the place of use is not inconsistent regarding an area added to the place of
				  use with any watershed plan approved under chapter 90.82 RCW or a comprehensive
				  watershed plan approved under
				  RCW
				  90.54.040(1) after September
				  3, 2003, if such a watershed plan has been approved for the
				  area.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-108 - Consistency with local plans and regulations

Current through Register Vol. 24-14, July 15, 2024
Consistency with local plans and regulations applies to
					 planning and engineering documents under WAC
					 246-290-106,
					 246-290-107, and
					 246-290-110.
(1) Municipal water suppliers must include a
				  consistency review and supporting documentation in its planning or engineering
				  document describing how it has considered consistency with local plans and
				  regulations. This review must include elements of local plans and regulations,
				  as they reasonably relate to water service to be provided by a municipal water
				  supplier for any new connection, including:
(a) Land use and zoning within the service
				  area;
(b) Growth projections used
				  in the demand forecast;
(c) Utility
				  service extension ordinances of a city or town when water service is provided
				  by the water utility of the city or town;
(d) Provisions of water service for new
				  service connections; and
(e) Other
				  relevant elements related to water supply planning as determined by the
				  department.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-110 - Project report

Current through Register Vol. 24-14, July 15, 2024
(1) The project
				  report is a written document that describes why a project is being proposed and
				  includes engineering design calculations showing how the project will meet its
				  objectives.
(2) Purveyors shall
				  submit project reports to the department and obtain written approval prior to
				  installation or construction of any new water system, water system extension,
				  or improvement. The department may require the submittal of a project report
				  for the purpose of resolving a system operational problem. Exceptions to this
				  requirement are listed in WAC
				  246-290-125.
(3) Project reports submitted for approval by
				  purveyors who are required to have a water system plan will not be considered
				  for approval unless a current, approved water system plan that adequately
				  addresses the project is on file with the department. In the event that a
				  purveyor of an existing system does not have such a water system plan, the
				  department may enter into a compliance agreement with the purveyor that grants
				  a time extension to complete the water system plan.
(4) Project reports shall be consistent with
				  the standards identified in Part 3 of this chapter. Depending on the complexity
				  and type of project or problem, the report shall include the following elements
				  (information contained in a current water system plan or other engineering
				  document previously approved by the department need not be duplicated, but must
				  be specifically referenced):
(a) Project
				  description, including:
(i) Why the project
				  is being proposed, how problem(s) (if any) are to be addressed, and the
				  relationship of the project to other system components;
(ii) A statement of SEPA determination of
				  nonsignificance or justification of why SEPA does not apply to
				  project;
(iii) Source development
				  information under WAC
				  246-290-130,
				  246-290-132, and
				  246-290-135, if
				  applicable;
(iv) Type of treatment
				  under WAC
				  246-290-250, if applicable;
				  and
(v) A summary of consumer and
				  user complaints.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-120 - Construction documents

Current through Register Vol. 24-14, July 15, 2024
(1)
				  Construction documents shall identify how specific projects will be constructed
				  while satisfying the requirements and conditions established in the project
				  report and/or the water system plan.
(2) Purveyors shall submit construction
				  documents to the department and obtain written approval prior to construction
				  of any new water system, or water system extension or improvement. Exceptions
				  to this requirement are listed in WAC
				  246-290-125.
(3) Construction documents submitted for
				  approval by purveyors who are required to have a water system plan will not be
				  considered for approval unless a current, approved water system plan that
				  adequately addresses the project is on file with the department. In the event
				  that a purveyor of an existing system does not have a water system plan, the
				  department may enter into a compliance agreement with the purveyor that grants
				  a time extension to complete the water system plan.
(4) Construction documents shall be
				  consistent with the standards identified in Part 3 of this chapter and shall
				  include, at a minimum, the following:
(a)
				  Drawings. Include detailed drawings of each project component;
(b) Material specifications. List detailed
				  material specifications for each project component;
(c) Construction specifications.
(i) List detailed construction specifications
				  and assembly techniques for carrying out the project;
(ii) Testing. Identify testing criteria and
				  procedures for each applicable portion of the project;
(iii) Disinfection. Identify specific
				  disinfection procedures that shall conform with AWWA standards or other
				  standards acceptable to the department;
(iv) Inspection. Identify provisions for
				  inspection of the installation of each project component. See WAC
				  246-290-040 and subsection (5) of
				  this section for construction reporting requirements;
(d) Change orders. All significant changes
				  shall be submitted to and approved by the department in writing. The change
				  order must identify who will be responsible for obtaining department approval
				  and how change orders will be reported to the department. Significant means a
				  change in materials used, deviations from original intent of project, or
				  changes made to the physical capacity of the project;
(e) Record drawings. Record drawings provided
				  to the purveyor following the completion of the project shall be maintained and
				  available to the department upon request.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-125 - Project report and construction document submittal exceptions

Current through Register Vol. 24-14, July 15, 2024
(1) The following
				  projects do not require project reports under WAC
				  246-290-110 and construction
				  documents under WAC
				  246-290-120 to be submitted to
				  the department for review and approval prior to installation:
(a) Installation of valves, fittings, meters,
				  and approved backflow prevention assemblies;
(b) Installation of hydrants under WAC
				  246-290-230(3) and
				  (6);
(c) Repair of a system component or
				  replacement with a component of a similar capacity and material in accordance
				  with the original construction specifications of the approved design. For the
				  purposes of replacing existing pipe, similar capacity includes one standard
				  pipe size larger; or
(d)
				  Maintenance or painting of surfaces not contacting potable water.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-130 - Source approval

Current through Register Vol. 24-14, July 15, 2024
(1) Every
				  purveyor shall obtain drinking water from the highest quality source feasible.
				  Every purveyor shall, prior to using a source as a public water supply, obtain
				  approval from the department for:
(a) All new
				  sources.
(b) Previously unapproved
				  sources.
(c) Modifications to
				  existing sources.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-131 - Emergency sources and supplies

Current through Register Vol. 24-14, July 15, 2024
(1)
				  A purveyor with an emergency source shall provide, at a minimum, the following
				  information in its department-approved emergency response program required
				  under WAC
				  246-290-415(2)(d):
(a) Source name, department identification
				  number, capacity, and location;
(b)
				  Engineering design department approval status;
(c) Routine water quality emergency source
				  monitoring schedule, if applicable; and
(d) Procedures to activate the emergency
				  source for the purpose of supplying the distribution system, including:
(i) Persons authorized to activate the
				  source;
(ii) Conditions in which
				  the emergency source will be activated;
(iii) Operational steps that will be taken
				  before the source is activated;
(iv) Water quality sampling performed
				  immediately before activating the source and while the emergency source is in
				  operation; and
(v) Steps that will
				  be taken to inform the public and the department before activating the
				  source.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-132 - Interties

Current through Register Vol. 24-14, July 15, 2024
(1) No interties
				  shall be used and/or constructed as a public water supply without department
				  approval.
(2) Interties shall not
				  be eligible for submittal exceptions pursuant to WAC
				  246-290-125.
(3) Prior to department approval, purveyors
				  proposing nonemergency interties shall ensure that the intertie is addressed:
(a) In an approved coordinated water system
				  plan, water system plan, water system plan update, water system plan amendment,
				  or small water system management program including:
(i) Location of the proposed
				  intertie;
(ii) Date it is proposed
				  to be utilized;
(iii) The purpose,
				  physical capacity, service area, and proposed usage of the intertie;
(iv) Copy of the intertie agreement between
				  purveyors;
(v) Description of how
				  the intertie:
(A) Improves overall system
				  reliability;
(B) Enhances the
				  manageability of the system;
(C)
				  Provides opportunities for conjunctive use; or
(D) Delays or avoids the need to develop new
				  water sources;
(vi)
				  Identification of any potential public health or safety concerns;
(vii) Discussion of any water quality and
				  treatment issues;
(viii)
				  Demonstration of the source capacity and hydraulic capacity of the supplying
				  and receiving systems at the designed flow rate through the intertie;
(ix) Water right self-assessment;
(x) Identification of alternative sources
				  that will be utilized when the intertie agreement expires if the water is not
				  being provided in perpetuity; and
(xi) Identification and comparison of
				  alternatives if any.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-135 - Source water protection

Current through Register Vol. 24-14, July 15, 2024
(1) The
				  department may require monitoring and controls in addition to those specified
				  in this section if the department determines a potential risk exists to the
				  water quality of a source.
(2) SCA.
(a) The purveyor shall maintain an SCA around
				  all sources for the purpose of protecting them from existing and potential
				  sources of contamination.
(b) For
				  wells and springs, the minimum SCA shall have a radius of one hundred feet
				  (thirty meters) and two hundred feet (sixty meters) respectively, unless
				  engineering justification demonstrates that a smaller area can provide an
				  adequate level of source water protection. The justification shall address
				  geological and hydrological data, well construction details, mitigation
				  measures, and other relevant factors necessary to assure adequate sanitary
				  control.
(c) The department may
				  require a larger SCA than specified in (b) of this subsection, or additional
				  mitigation measures if land use, geological, or hydrological data support the
				  decision. It shall be the purveyor's responsibility to obtain the protection
				  needed.
(d) The purveyor shall
				  prohibit the construction, storage, disposal, or application of any source of
				  contamination within the SCA without the permission of the purveyor.
(e) The SCA shall be owned by the purveyor in
				  fee simple, or the purveyor shall have the right to exercise complete sanitary
				  control of the land through other legal provisions.
(f) A purveyor, owning all or part of the SCA
				  in fee simple or having possession and control, shall send to the department
				  copies of legal documentation, such as a duly recorded declaration of covenant,
				  restricting the use of the land. This legal documentation shall state:
(i) Constructing, storing, disposing, or
				  applying any source of contamination is prohibited without the permission of
				  the purveyor; and
(ii) If any
				  change in ownership of the system or SCA is considered, all affected parties
				  shall be informed of these requirements.
(g) Where portions of the control area are in
				  the possession and control of another, the purveyor shall obtain a duly
				  recorded restrictive covenant which shall run with the land, restricting the
				  use of the land in accordance with this chapter and provide the department with
				  copies of the appropriate documentation.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 2 - PLANNING AND ENGINEERING DOCUMENTS › Section 246-290-140 - Existing system as-built approval

Current through Register Vol. 24-14, July 15, 2024
At the discretion of the department, owners of existing
					 systems without approved construction documents shall provide information
					 necessary to establish the extent of the water system's compliance with this
					 chapter. At a minimum, this shall include submission and approval by the
					 department of:
(1) A water system plan
				  or small water system management program;
(2) As-built or record drawings;
				  and
(3) Water quality
				  analyses.
Statutory Authority: RCW 43.02.050 [43.20.050].
						99-07-021, § 246-290-140, filed 3/9/99, effective 4/9/99. Statutory
						Authority:
						RCW
						43.20.050. 94-14-001, § 246-290-140,
						filed 6/22/94, effective 7/23/94; 91-02-051 (Order 124B), recodified as §
						246-290-140, filed 12/27/90, effective 1/31/91. Statutory Authority: P.L.
						99-339. 89-21-020 (Order 336), § 248-54-098, filed 10/10/89, effective
						11/10/89.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 3 - DESIGN OF PUBLIC WATER SYSTEMS › Section 246-290-200 - Design standards

Current through Register Vol. 24-14, July 15, 2024
(1) Purveyors
				  shall ensure that good engineering criteria and practices are used in the
				  design and construction of all public water systems, such as those set out in:
(a) Department guidance on design for Group A
				  public water systems;
(b) The most
				  recent published edition of the International Building Code (IBC), the Uniform
				  Plumbing Code (UPC), and other national model codes adopted in Washington
				  state;
(c) The most recent
				  published edition of
Recommended Standards for Water Works, A Committee
				  Report of the Great Lakes - Upper Mississippi River Board of State Public
				  Health and Environmental Managers
;
(d) Standard specifications of the American
				  Public Works Association, the American Society of Civil Engineers, AWWA, or the
				  American Society for Testing and Materials;
(e) Design criteria, such as contained in
				  current college texts and professional journal articles, acceptable to the
				  department;
(f) Chapter 173-160 WAC
Minimum Standards for Construction and Maintenance of
				  Wells
;
(g) The latest
				  edition of the PNWS-AWWA Cross-Connection Control Manual, or the University of
				  Southern California (USC) Manual of Cross-Connection Control.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 3 - DESIGN OF PUBLIC WATER SYSTEMS › Section 246-290-221 - Water demand design criteria

Current through Register Vol. 24-14, July 15, 2024
(1)
				  Except as provided in this section, expanding systems shall use water demand
				  design for average day demand (ADD), and peak periods of demand such as maximum
				  day demand (MDD), and peak hourly demand (PHD) that are based upon actual
				  metered water use records. The data collected shall be sufficient to account
				  for seasonal or other cyclic changes in water demand, and shall correlate to
				  the maximum number of full-time or part-time equivalent residential units in
				  service at any time.
(2) For
				  seasonally used, transitory noncommunity, or recreational developments the
				  design for ADD, MDD, and PHD shall be based upon metered water uses whenever
				  such data is available. The data must account for the daily population using
				  the water over the time that records are collected, and must reflect the uses
				  associated with maximum occupancy for the development. The design demands for
				  these developments apply only to part-time uses, and may not be applied to
				  structures or dwellings that can be permanently occupied.
(3) In the absence of metered use or other
				  comparable information, the following sources of design information may be
				  used:
(a) Comparable metered water use data
				  from analogous water systems. Analogous systems are those with similar
				  characteristics, such as demographics, housing sizes, income levels, lot sizes,
				  climate, water pricing structure, water use efficiency practices, use
				  restrictions, and soils and landscaping; or
(b) Design criteria or guidelines in the most
				  recent edition of the department manual for design of Group A public water
				  systems.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 3 - DESIGN OF PUBLIC WATER SYSTEMS › Section 246-290-222 - Water system physical capacity

Current through Register Vol. 24-14, July 15, 2024
(1)
				  The water system physical capacity shall be established by evaluating the
				  capacity of each system component such as source, treatment, storage,
				  transmission, or distribution, individually and in combination with each other.
				  The evaluation shall identify any limitations on the ability of the system to
				  provide service to all consumers.
(2) The water system physical capacity shall
				  be:
(a) Reported in terms of total equivalent
				  residential units (ERUs) and the number of residential and nonresidential
				  connections with the number of ERUs they represent; and
(b) Compared to the existing number of
				  residential and nonresidential connections currently served and the ERUs they
				  represent.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 3 - DESIGN OF PUBLIC WATER SYSTEMS › Section 246-290-230 - Distribution systems

Current through Register Vol. 24-14, July 15, 2024
(1) The purveyor
				  shall size and evaluate new, or expansions to existing, distribution systems
				  using a hydraulic analysis acceptable to the department.
(2) The minimum diameter of all distribution
				  mains shall be six inches (150 mm) unless smaller mains can be justified by
				  hydraulic analysis.
(3) Systems
				  designed to provide fire flows shall have a minimum distribution main size of
				  six inches (150 mm).
(4)
				  Installation of new standard fire hydrants shall not be allowed on mains less
				  than six inches (150 mm) in diameter. Existing fire hydrants on currently
				  active mains less than six inches (150 mm) in diameter shall be allowed to
				  remain provided:
(a) The existing
				  distribution system consists of mains at least four inches (101.6 mm) in
				  diameter, and the fire flow available from existing four-inch (101.6 mm) mains
				  within the proximity of the fire hydrant exceeds the minimum fire flow standard
				  adopted by the local fire protection authority; and
(b) The location and installation of the fire
				  hydrants on the four-inch (101.6 mm) main have received approval by the local
				  fire protection authority.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 3 - DESIGN OF PUBLIC WATER SYSTEMS › Section 246-290-235 - Finished water storage facilities

Current through Register Vol. 24-14, July 15, 2024
(1)
				  Finished water storage facilities shall be designed to:
(a) Prevent entry by birds, animals, insects,
				  excessive dust, and other potential sources of external contamination. The
				  design shall include provisions for a lockable weathertight roof, a screened
				  roof vent, an overflow pipe with atmospheric discharge or other suitable means
				  to prevent a cross-connection, sample collection capability, a drain to
				  daylight (or an approved alternative that is adequate to protect against
				  cross-connection), a provision for tank isolation in order to perform
				  maintenance procedures, and other appurtenances appropriate to the protection
				  of stored water from contamination;
(b) Maintain water circulation, prevent water
				  stagnation, and provide adequate disinfection contact time; and
(c) Be accessible for routine maintenance and
				  water quality monitoring.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 3 - DESIGN OF PUBLIC WATER SYSTEMS › Section 246-290-250 - Treatment design

Current through Register Vol. 24-14, July 15, 2024
(1) Treatment
				  systems or devices shall be piloted and designed to ensure finished water
				  quality conforms to water quality standards established in WAC
				  246-290-310.
(2) Treatment systems or devices for surface
				  water or GWI sources shall be designed in accordance with the provisions of
				  Part 6 of this chapter and the applicable provisions herein.
(3) Predesign studies, including pilot
				  studies as appropriate, shall be required for proposed surface water and GWI
				  sources and those groundwater sources requiring treatment. The goal of the
				  predesign study shall be to establish the most effective method, considering
				  economics, to produce satisfactory finished water quality meeting the
				  requirements of this chapter and complying with the treatment technique
				  requirements in Part 6 of chapter 246-290 WAC. The predesign study shall be
				  included as part of the project report under WAC
				  246-290-110. Refer to WAC
				  246-290-676 for requirements
				  relating specifically to the filtration facility pilot study. The purveyor
				  shall not establish nor maintain a bypass to divert water around any feature of
				  a treatment process, except by written permission of the department.
(4) All well and spring sources not
				  determined to be GWI's shall have continuous disinfection that meets the
				  requirements of WAC
				  246-290-451. The department may
				  modify the requirement for disinfection for public water systems that
				  demonstrate the well or spring sources (not confirmed as GWI's) have
				  satisfactory bacteriological histories at the source and have SCAs in
				  accordance with WAC
				  246-290-135.
(5) Purveyors shall use appropriate treatment
				  technologies, such as those outlined in department guidance on water treatment,
				  and shall address water treatment facilities in their water system plans
				  pursuant to WAC
				  246-290-100.
(6) Project reports for the design of
				  treatment facilities shall meet the requirements of WAC
				  246-290-110.
(7) Construction specifications for treatment
				  facilities shall meet the requirements of WAC
				  246-290-120.
Statutory Authority: RCW 43.20.050 and 70.119A.080.
						10-20-068, § 246-290-250, filed 9/29/10, effective 11/1/10. Statutory
						Authority: RCW 43.02.050 [43.20.050]. 99-07-021, § 246-290-250, filed
						3/9/99, effective 4/9/99. Statutory Authority: RCW 43.20.050. 93-08-011 (Order
						352B), § 246-290-250, filed 3/25/93, effective 4/25/93; 91-02-051 (Order
						124B), recodified as § 246-290-250, filed 12/27/90, effective 1/31/91.
						Statutory Authority: RCW 34.04.045. 88-05-057 (Order 307), § 248-54-155,
						filed 2/17/88. Statutory Authority: RCW 43.20.050. 83-19-002 (Order 266),
						§ 248-54-155, filed 9/8/83.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 4 - WATER QUALITY › Section 246-290-300 - Monitoring requirements

Current through Register Vol. 24-14, July 15, 2024
(1) General.
(a) The monitoring requirements specified in
				  this section are minimums. The department may require additional monitoring
				  when:
(i) Contamination is present or
				  suspected in the water system;
(ii)
				  A groundwater source is determined to be a potential GWI;
(iii) The degree of source protection is not
				  satisfactory;
(iv) Additional
				  monitoring is needed to verify source vulnerability for a requested monitoring
				  waiver;
(v) Under other
				  circumstances as identified in a department order; or
(vi) Additional monitoring is needed to
				  evaluate continuing effectiveness of a treatment process where problems with
				  the treatment process may exist.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 4 - WATER QUALITY › Section 246-290-310 - Maximum contaminant levels (MCLs) and maximum residual disinfectant levels (MRDLs)

Current through Register Vol. 24-14, July 15, 2024
(1) General.
(a) The purveyor shall be responsible for
				  complying with the standards of water quality identified in this section. If a
				  contaminant exceeds its MCL or its maximum residual disinfectant level (MRDL),
				  the purveyor shall take follow-up action under WAC
				  246-290-320.
(b) When enforcing the standards described
				  under this section, the department shall enforce compliance with the primary
				  standards as its first priority.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 4 - WATER QUALITY › Section 246-290-315 - State action levels (SALs) and state maximum contaminant levels (MCLs)

Current through Register Vol. 24-14, July 15, 2024
(1) The department
				  shall consider the following criteria to select a contaminant for developing a
				  SAL:
(a) Drinking water contributes to human
				  exposure to the contaminant.
(b)
				  The contaminant is known or likely to occur in public water systems at levels
				  of public health concern. Sources of occurrence information include, but are
				  not limited to:
(i) Washington state
				  department of agriculture;
(ii)
				  Washington state department of ecology; and
(iii) Monitoring results reported in
				  accordance with
				  40 C.F.R.
				  141.35.
(c) The contaminant has a possible adverse
				  effect on the health of persons exposed based on peer-reviewed scientific
				  literature or government publications, such as:
(i) An EPA health assessment such as an
				  Integrated Risk Information System assessment;
(ii) Agency for Toxic Substances and Disease
				  Registry toxicological profiles;
(iii) State government science assessment;
				  and
(iv) EPA guidelines for
				  exposure assessment such as the EPA exposure factors handbook.
(d) A certified drinking water lab
				  can accurately and precisely measure the concentration of the contaminant in
				  drinking water at and below the level of public health concern using
				  EPA-approved analytical methods.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 4 - WATER QUALITY › Section 246-290-320 - Follow-up action

Current through Register Vol. 24-14, July 15, 2024
(1) General.
(a) When an MCL or MRDL violation or SAL
				  exceedance occurs, the purveyor shall take follow-up action as described in
				  this section.
(b) When a primary
				  standard violation occurs the purveyor shall:
(i) Notify the department under WAC
				  246-290-480;
(ii) Notify the consumers served by the
				  system and the owner or operator of any consecutive system served in accordance
				  with
				  40 C.F.R.
				  141.201 through 208, and Part 7, Sub-part A
				  of this chapter;
(iii) Investigate
				  the cause of the contamination, within the purveyor's control; and
(iv) Take action as directed by the
				  department.
(c) When a
				  secondary standard violation occurs, the purveyor shall notify the department
				  and take action as directed by the department.
(d) When a SAL exceedance under WAC
				  246-290-315 occurs, the purveyor
				  shall:
(i) Notify the department in accordance
				  with WAC 246-290-480;
(ii) Notify water system users and the owner
				  or operator of any consecutive system served water in exceedance of the SAL in
				  accordance with WAC
				  246-290-71006;
(iii) Continue monitoring in accordance with
				  subsection (8) or (9) of this section, as applicable;
(iv) Investigate the cause of the
				  contamination within the purveyor's control; and
(v) Take action as directed by the
				  department.
(e) The
				  department may require additional sampling for confirmation of
				  results.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-415 - Operations and maintenance

Current through Register Vol. 24-14, July 15, 2024
(1) The
				  purveyor shall operate the system in accordance with the operations and
				  maintenance program as established in the approved water system plan required
				  under WAC
				  246-290-100 or the small water
				  system management program under WAC
				  246-290-105.
(2) The operations and maintenance program
				  must include the following elements as applicable:
(a) Water system management and
				  personnel;
(b) Operator
				  certification;
(c) Comprehensive
				  monitoring plan for all contaminants under WAC
				  246-290-300;
(d) Emergency response program;
(e) Cross-connection control program;
				  and
(f) Maintenance of service
				  reliability in accordance with WAC
				  246-290-420.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-416 - Sanitary surveys

Current through Register Vol. 24-14, July 15, 2024
(1) All public
				  water systems shall submit to a sanitary survey conducted by the department, or
				  the department's designee, based upon the following schedule:
(a) For community water systems, every three
				  years. In accordance with 40
				  C.F.R. 141.21(d)(3),
				  community water systems may qualify to be surveyed every five years if the
				  system meets the following criteria:
(i)
				  Provides at least 4-log treatment of viruses (using inactivation, removal, or a
				  department-approved combination of 4-log inactivation and removal) before or at
				  the first customer for all its groundwater sources; or
(ii) Has no total coliform or
E.
				  coli
MCL violations since the last sanitary survey;
(iii) Has no coliform treatment technique
				  violations for failure to conduct the required assessment or complete
				  corrective actions in response to a treatment technique trigger since the last
				  sanitary survey;
(iv) Has no more
				  than one total coliform monitoring violation since the last sanitary survey;
				  and
(v) Has no unresolved
				  significant deficiencies from the current sanitary survey.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-451 - Disinfection of drinking water

Current through Register Vol. 24-14, July 15, 2024
(1) No
				  portion of a public water system containing potable water shall be put into
				  service, nor shall service be resumed until the facility has been effectively
				  disinfected.
(a) In cases of new
				  construction, drinking water shall not be furnished to the consumer until
				  satisfactory bacteriological samples have been analyzed by a laboratory
				  certified by the state;
(b) In
				  cases of existing water mains, when the integrity of the main is lost resulting
				  in a significant loss of pressure that places the main at risk to
				  contamination, the purveyor shall use standard industry practices to ensure
				  adequate and safe water quality prior to the return of the line to service,
				  including at least one of the following:
(i)
				  Flushing;
(ii) Disinfection;
				  or
(iii) Bacteriological
				  sampling.
(c) If a
				  cross-connection is confirmed, the purveyor shall satisfy the reporting
				  requirements as described under WAC
				  246-290-490(8).
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-453 - Corrective action under the GWR

Current through Register Vol. 24-14, July 15, 2024
(1)
				  Groundwater systems with significant deficiencies identified under WAC
				  246-290-416, or source fecal
				  contamination as determined under WAC
				  246-290-300(3)(h)
				   must:
(a)
				  Take one or more of the following corrective actions:
(i) Correct all significant
				  deficiencies;
(ii) Provide an
				  alternate source of water;
(iii)
				  Eliminate the source of contamination; or
(iv) Provide treatment that reliably achieves
				  at least 4-log treatment of viruses (using inactivation, removal, or a
				  department-approved combination of 4-log virus inactivation and removal) before
				  or at the first customer for the ground-water source.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-455 - Operation of chemical contaminant treatment facilities

Current through Register Vol. 24-14, July 15, 2024
(1) Finished drinking water from chemical
				  contaminant treatment facilities must comply with the minimum water quality
				  standards established in WAC
				  246-290-310. This section does
				  not apply to facilities used only for corrosion control treatment purposes.
(a) The purveyor shall collect finished
				  drinking water samples at a point directly downstream of the treatment system
				  prior to the first consumer on a monthly basis.
(i) Finished drinking water samples from
				  treatment systems utilized for removal of contaminants with established primary
				  MCLs shall be submitted to a certified laboratory for analysis of the specific
				  contaminant(s) of concern.
(ii)
				  Finished drinking water samples from treatment systems utilized for removal of
				  contaminants with established secondary MCLs shall be submitted to a certified
				  laboratory for analysis or analyzed for the specific contaminant(s) of concern
				  by the purveyor through department-approved on-site methods.
(iii) Additional finished drinking water
				  monitoring may be required by the department based on the complexity or size of
				  the water system.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-460 - Fluoridation of drinking water

Current through Register Vol. 24-14, July 15, 2024
(1)
				  Purveyors shall obtain written department approval of fluoridation treatment
				  facilities before placing them in service and shall notify the department
				  before discontinuing fluoridation.
(2) Where fluoridation is practiced, the
				  optimal fluoride concentration is 0.7 mg/L.
(3) To ensure concentrations remain as close
				  as possible to the optimal fluoride concentration throughout the entire
				  distribution system and fluoridation facilities and monitoring equipment are
				  operating properly, purveyors shall take the following actions:
(a) Monitoring.
(i) Each business day, collect routine
				  monitoring samples downstream from each fluoride injection point at the first
				  sample tap where adequate mixing has occurred.
(ii) Analyze samples in accordance with
				  procedures identified in the 22nd edition of
Standard Methods for the
				  Examination of Water and Wastewater
, January 2012, or other
				  department-approved procedures.
(iii) Once per month, collect a split sample
				  at the same location routine monitoring samples are collected and process as
				  follows:
(A) Analyze half the sample and
				  record the results on the chain of custody document; and
(B) Submit the other half of the sample for
				  analysis to a drinking water certified laboratory with the chain of custody
				  document.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-470 - Uncovered finished water storage facilities

Current through Register Vol. 24-14, July 15, 2024
(1) Existing uncovered finished water storage
				  facilities shall be operated based on a plan of operation approved by the
				  department.
(2) Purveyors with
				  uncovered finished water storage facilities shall have a department-approved
				  plan and schedule to cover all reservoirs on file with the
				  department.
(3) The plan of
				  operation shall address the following elements as a minimum:
(a) Assurance of the means and levels
				  associated with the provision of continuous disinfection at all times water is
				  being delivered to the public, including the reliability provisions outlined in
				  WAC 246-290-420;
(b) Description of the means for control of
				  debris, algal, or other aquatic organism growths, surface water runoff, and
				  atmospheric or avian-borne airborne contamination;
(c) Procedures for ensuring that construction
				  will not lead to reservoir contamination;
(d) Provisions for ensuring adequate security
				  measures are provided; and
(e) Any
				  required, or department-directed, monitoring and reporting.
Washington Administrative Code › Title 246 - Health, Department of › WATER SYSTEMS › Chapter 246-290 - Group A public water supplies › Part 5 - WATER SYSTEM OPERATIONS › Section 246-290-480 - Recordkeeping and reporting

Current through Register Vol. 24-14, July 15, 2024
(1)
				  Records. The purveyor shall keep the following records of operation and water
				  quality analyses:
(a) Bacteriological and
				  turbidity analysis results must be kept for five years. Chemical analysis
				  results must be kept for as long as the system is in operation. Records of
				  source meter readings must be kept for ten years. Other records of operation
				  and analyses required by the department shall be kept for three years. All
				  records must bear the signature of the operator in responsible charge of the
				  water system or his or her representative. Systems must keep these records
				  available for inspection by the department and must send the records to the
				  department if requested. Actual laboratory reports may be kept or data may be
				  transferred to tabular summaries, provided the following information is
				  included:
(i) The date, place, and time of
				  sampling, and the name of the person collecting the sample;
(ii) Identification of the sample type
				  (routine distribution system sample, repeat sample, source or finished water
				  sample, or other special purpose sample);
(iii) Date of analysis;
(iv) Laboratory and person responsible for
				  performing analysis;
(v) The
				  analytical method used; and
(vi)
				  The results of the analysis.