West Virginia Code of State Rules › Agency 64 - Health › Title 64 - LEGISLATIVE RULE WEST VIRGINIA DEPARTMENT OF HEALTH AND HUMAN RESOURCES › Series 64-77 - Public Water Systems Design Standards › Section 64-77-4 - General Design Considerations

Current through Register Vol. XLI, No. 28, July 12, 2024
4.1.
				General. -- The design of a public water system or treatment process
				encompasses a broad area and thus, is dependent upon the type of system or
				process involved.
4.2. Design
				Basis. -- The system including the water source, treatment facilities,
				operation and distribution system shall be designed for maximum day demand at
				the design year.
4.3. Plant Layout.
				-- The public water systems' engineer of the plant shall consider: functional
				aspects of the plant layout, including provisions for future plant expansion;
				provisions for expansion of the plant waste treatment and disposal facilities,
				including filter backwash effluent; access roads; site grading; site drainage;
				walks; driveways; and chemical delivery and storage.
4.4. Building Layout. -- The designer of the
				building shall provide for: adequate ventilation, lighting, heating and
				drainage; dehumidification equipment, if necessary; accessibility of equipment
				for operation, servicing, and removal; flexibility of operation; operator
				safety; and convenience of operation. The design of the building shall also
				provide for chemical storage and feed equipment in a separate room to reduce
				hazards and dust problems.
4.5.
				Location of Structures. -- The applicant or the applicant's engineer shall
				consult the West Virginia Department of Environmental Protection (WVDEP)
				regarding any structure that is located in such a way that normal or flood
				stream flows may be impeded. Where practical, all structures shall be located
				above the one hundred (100) year flood elevation or have adequate protection
				against one hundred year floods. The U.S. Army Corps of Engineers may require
				permits.
4.6. Electrical Controls.
				-- Main switch gear electrical controls shall be located above grade, in areas
				not subject to flooding.
4.7.
				Standby Power. -- Standby power may be required by the BPH so that water may be
				treated or pumped, or both, to the distribution system during power outages to
				meet the average day demand.
4.8.
				Shop Space and Storage. -- Adequate facilities shall be included for shop space
				and storage consistent with the designed facilities.
4.9. Laboratory Facilities. -- Each public
				water system shall have its own equipment and facilities for routine laboratory
				testing to ensure proper operation. Laboratory equipment selection shall be
				based on the characteristics of the raw water source and the complexity of the
				treatment process involved. Laboratory test kits that simplify procedures for
				making one or more tests may be acceptable. Necessary laboratory tests shall be
				performed by an operator or chemist qualified to perform the tests. Analyses
				conducted to determine compliance with drinking water regulations shall be
				performed in a laboratory certified by the United States Environmental
				Protection Agency or the West Virginia Office of Laboratory Services and shall
				be performed in accordance with Standard Methods for the Examination of Water
				and Wastewater or alternative methods approved by the BPH. Persons designing
				and equipping laboratory facilities shall confer with the BPH before beginning
				the preparation of plans or the purchase of equipment. Methods for verifying
				adequate quality assurances and for routine calibration of equipment shall be
				provided.
4.9.a. Laboratory testing
				equipment. -- At a minimum, the following laboratory equipment shall be
				provided:
4.9.a.1. Surface water supplies
				shall have a nephelometric turbidimeter meeting the requirements of "Standard
				Methods for the Examination of Water and Wastewater";
4.9.a.2. Each surface water treatment plant
				utilizing flocculation and sedimentation, including those which lime softens,
				shall have a pH meter, jar test equipment and titration equipment for both
				hardness and alkalinity;
4.9.a.3.
				Each community and non-community, non-transient public water system
				ion-exchange softening plant, and lime softening plant treating only
				groundwater shall have a pH meter and titration equipment for both hardness and
				alkalinity;
4.9.a.4. Each green
				sand filter using potassium permanganate iron removal plant shall have test
				equipment capable of accurately measuring iron to a minimum of 0.1 milligrams
				per liter. Each green sand filter using potassium permanganate manganese
				removal plant shall have test equipment capable of accurately measuring
				manganese to a minimum of 0.05 milligrams per liter;
4.9.a.5. Public water systems shall have test
				equipment for determining both free and total chlorine residual by the Standard
				Methods for the Examination of Water and Wastewater publication;
4.9.a.6. Public water systems that fluoridate
				shall have test equipment for determining fluoride by the "Standard Methods for
				the Examination of Water and Wastewater" publication; and
4.9.a.7. Public water systems that feed poly
				and/or orthophosphates shall have test equipment capable of accurately
				measuring phosphates from 0.1 to twenty (20) milligrams per liter.