New York Codes, Rules and Regulations › Title 10 - DEPARTMENT OF HEALTH › Chapter I - State Sanitary Code › Part 5 - Drinking Water Supplies › Subpart 5-1 - Public Water Systems › Operation and Quality Control › Section 5-1.72 - Operation of a public water system

Current through Register Vol. 46, No. 28, July 10, 2024
(a) The supplier of water and the person or
					 persons in charge of the operation of a public water system shall operate and
					 maintain the public water system in such a manner to meet the requirements of
					 this Subpart.
(b) The person or
					 persons in charge of operation of a public water system shall be certified
					 pursuant to Subpart 5-4 of this Part.
(c) Complete daily records shall be kept of
					 the operation of a public water system.
(1) A
					 copy of daily operation records in a format provided or approved by the State
					 shall be sent to the State by the 10th calendar day of the next reporting
					 period. These records shall include the results of all tests, measurements or
					 analysis required to be made by this Subpart or as requested by the State. All
					 operational records shall be available to the State either upon request or in
					 conjunction with periodic sanitary surveys conducted by the State.
(2) Systems using conventional filtration
					 treatment or direct filtration must conduct continuous turbidity monitoring for
					 each individual filter, as described in section
					 5-1.52  table
					 10A of this Subpart. Systems must record the results of individual filler
					 monitoring every 15 minutes. Systems must maintain individual filter monitoring
					 results for at least three years. Systems must report to the State that they
					 have conducted individual filter turbidity monitoring within 10 days after the
					 end of each month the system serves water to the public. Systems must report to
					 the State individual filter turbidity measurement results within 10 days after
					 the end of each month the system serves water to the public only if
					 measurements demonstrate one or more of the following conditions, except that
					 systems serving fewer than 10,000 persons are not required to comply with
					 subparagraph (ii) of this paragraph:
(i) For
					 any individual filter that has a measured turbidity level of greater than 1.0
					 nephelometric turbidity units (NTU) in two consecutive measurements taken 15
					 minutes apart, the system must report the filter identification number, the
					 turbidity measurement, and the date(s) on which the exceedance occurred. In
					 addition, the system must either produce a filter profile for the filter within
					 seven days of the exceedance (if the system is not able to identify an obvious
					 reason for the abnormal filter performance) and submit the profile to the
					 State, or report the obvious reason for the exceedance.
(ii) For any individual filter that has a
					 measured turbidity level of greater than 0.5 NTU in two consecutive
					 measurements taken 15 minutes apart at the end of the first four hours of
					 continuous filter operation after the filter has been backwashed or otherwise
					 taken offline, the system must report the filter number, the turbidity, and the
					 date(s) on which the exceedance occurred. In addition, the system must either
					 produce a filter profile for the filter within seven days of the exceedance (if
					 the system is not able to identify an obvious reason for the abnormal filter
					 performance) and submit the profile to the State, or report the obvious reason
					 for the exceedance.
(iii) For any
					 individual filter that has a measured turbidity level of greater than 1.0 NTU
					 in two consecutive measurements taken 15 minutes apart at any time in each of
					 three consecutive months, the system must report to the State the filter
					 number, the turbidity measurement, and the dates on which the exceedance
					 occurred. In addition, the system must conduct a self-assessment of the filter
					 within 14 days of the exceedance and submit the self-assessment to the State.
					 The self-assessment must consist of at least the following components:
					 assessment of filter performance; development of a filter profile;
					 identification and prioritization of factors limiting filter performance;
					 assessment of the applicability of corrections; and preparation of a filter
					 self-assessment report.
(iv) For
					 any individual filter that has a measured turbidity level of greater than 2.0
					 NTU in two consecutive measurements taken 15 minutes apart at any time in each
					 of two consecutive months, the system must report to the State the filter
					 number, the turbidity measurement, and the dates on which the exceedance
					 occurred. In addition, the system must arrange for the conduct of a
					 comprehensive performance evaluation (CPE) by the State or a third party
					 approved by the State no later than 30 days following the exceedance, and have
					 the evaluation completed and submitted to the State no later than 90 days
					 following the exceedance.
(3) Systems using conventional filtration
					 treatment or direct filtration treatment must notify the State in writing by
					 December 8, 2003, if the system recycles spent filter backwash water, thickener
					 supernatant, or liquids from dewatering processes. This notification must
					 include, at a minimum, the following information:
(i) A plant schematic showing the origin of
					 all flows which are recycled (including, but not limited to, spent filter
					 backwash water, thickener supernatant, and liquids from dewatering processes),
					 the hydraulic conveyance used to transport them, and the location where they
					 are reintroduced back into the treatment plant.
(ii) Typical recycle flow in gallons per
					 minute (gpm), the highest observed plant flow experienced in the previous year
					 (gpm), design flow for the treatment plant (gpm), and the State-approved
					 operating capacity for the plant where the State has made such
					 determinations.
(4)
					 Groundwater systems and groundwater sources that are required to conduct
					 process compliance monitoring to assure the achievement of four-log virus
					 treatment, must record the lowest treatment performance each day and record the
					 date and duration of any failure to achieve four-log virus treatment for a
					 period of more than four hours. In the event of failure to achieve required
					 virus treatment, the system shall continue to monitor treatment performance
					 every four hours until the system returns to compliance with minimum
					 performance requirements. The State must be notified of any failure to meet
					 process compliance monitoring requirements as well as any failure to achieve
					 four-log virus treatment, as soon as possible, but no later than the end of the
					 next business day.
(5) Surface
					 water systems and ground water systems under the direct influence of surface
					 water that are required to provide enhanced filtration and disinfection for
					 Cryptosporidium, shall report to the State in accordance with the treatment
					 and/or management options used to comply with the treatment requirements under
					 section 5-1.83(b) or (c) 
					 of this Subpart, as applicable. Alternatively, the State may approve a system
					 to certify operation within required parameters for treatment credit, rather
					 than reporting monthly operational data. The applicable treatment compliance
					 dates are found in section
					 5-1.83(d)  of this
					 Subpart.
(i) For systems using the watershed
					 control program option, notice of intention to develop a new or continue an
					 existing watershed control program shall be submitted no later than two years
					 before the treatment compliance date. The watershed control plan shall be
					 submitted no later than one year before the treatment compliance date. The
					 annual watershed control program status report shall be submitted every 12
					 months. For community water systems, the watershed sanitary survey report shall
					 be submitted every three years. For noncommunity water systems, the watershed
					 sanitary survey report shall be submitted every five years.
(ii) For systems using the alternative
					 source/intake management option, verification that the system has relocated the
					 intake or adopted the intake withdrawal procedure, reflected in monitoring
					 results, shall be submitted.
(iii)
					 For systems using the presedimentation option, monthly verification of the
					 following shall be submitted within 10 days after the month in which the
					 monitoring was conducted: continuous basin operation; treatment of 100 percent
					 of the flow; continuous addition of coagulant; and at least 0.5-log mean
					 reduction of influent turbidity or compliance with alternative State-approved
					 compliance criteria.
(iv) For
					 systems using the two-stage lime softening option, monthly verification of the
					 following shall be submitted within 10 days after the month in which the
					 monitoring was conducted: chemical addition and hardness precipitation occurred
					 in two separate and sequential softening stages prior to filtration; and both
					 stages treated 100 percent of the plant flow.
(v) For systems using the bank filtration
					 option, initial demonstration of the following shall be submitted no later than
					 treatment compliance date: aquifer shall be unconsolidated sand containing at
					 least 10 percent fines; and setback distance of at least 25 feet (0.5-log
					 credit) or 50 feet (1.0-log credit). If the monthly average of daily maximum
					 turbidity is greater than 1 NTU, then the system shall report the result and
					 submit an assessment of the cause within 30 days after the month in which the
					 monitoring was conducted, beginning on the applicable treatment compliance
					 date.
(vi) For systems using the
					 combined filter performance option, monthly verification of the following shall
					 be submitted within 10 days following the month in which the monitoring was
					 conducted: combined filter effluent (CFE) turbidity levels less than or equal
					 to 0.15 NTU in at least 95 percent of the four-hour CFE measurements taken each
					 month.
(vii) For systems using the
					 individual filter performance option, monthly verification of the following
					 shall be submitted within 10 days following the month in which the monitoring
					 was conducted: individual filter effluent (IFE) turbidity levels less than or
					 equal to 0.15 NTU in at least 95 percent of sample each month in each filter;
					 and no individual filter greater than 0.3 NTU in two consecutive readings 15
					 minutes apart.
(viii) For systems
					 using the demonstration of performance option, the results from testing
					 following a State-approved protocol shall be submitted no later than the
					 treatment compliance date. Monthly verification of operation within the
					 conditions of State approval for demonstration of performance credit, may be
					 required to be submitted within 10 days after the month in which the monitoring
					 was conducted, beginning on the applicable treatment compliance date.
(ix) For systems using the bag filter and
					 cartridge filter option, demonstration that the following criteria are met
					 shall be submitted no later than the treatment compliance date: the process
					 meets the definition of bag or cartridge filtration; and the removal efficiency
					 established through challenge testing that meets criteria approved by the
					 State. Monthly verification that 100 percent of the plant flow was filtered
					 shall be submitted within 10 days after the month in which monitoring was
					 conducted, beginning on the applicable treatment compliance date.
(x) For systems using the membrane filtration
					 option, results of verification testing demonstrating the following shall be
					 submitted no later than the treatment compliance date: removal efficiency
					 established through challenge testing that meets criteria approved by the
					 State; and integrity test method and parameters, including resolution,
					 sensitivity, test frequency, control limits, and associated baseline. A monthly
					 report summarizing the following shall be submitted within 10 days after the
					 month in which monitoring was conducted: all direct integrity tests above the
					 control limit; and, if applicable, any turbidity or alternative State-approved
					 indirect integrity monitoring results triggering direct integrity testing and
					 the corrective action that was taken.
(xi) For systems using the second stage
					 filtration option, monthly verification that 100 percent of flow was filtered
					 through both stages, and that the first stage was preceded by a coagulation
					 step, shall be submitted within 10 days after the month in which monitoring was
					 conducted.
(xii) For systems using
					 the slow sand filtration (as secondary filter) option, monthly verification
					 that both a slow sand filter and a preceding separate stage of filtration
					 treated 100 percent of surface water flow shall be submitted within 10 days
					 after the month in which monitoring was conducted.
(xiii) For systems using the chlorine dioxide
					 option, a summary of CT values for each day shall be submitted within 10 days
					 after the month in which monitoring was conducted.
(xiv) For systems using the ozone option, a
					 summary of CT values for each day shall be submitted within 10 days after the
					 month in which monitoring was conducted.
(xv) For systems using the UV option,
					 validation test results demonstrating operating conditions that achieve the
					 required UV dose shall be submitted no later than the treatment compliance
					 date. A monthly report, summarizing the percentage of water entering the
					 distribution system that was not treated by UV reactors operating within
					 validated conditions for the required dose shall be submitted within 10 days
					 after the month in which monitoring was conducted.
(6) Within 10 days of the end of any quarter
					 in which monitoring of disinfection byproducts (DBP) and/or disinfection
					 byproduct precursors (DBPP) is required under section
					 5-1.52  table 9A
					 and/or sections
					 5-1.60
					 and
					 5-1.61 
					 of this Subpart, the following must be reported to the State:
(i) number of DBP and DBPP samples taken
					 during the quarter;
(ii) date and
					 results of each DBP and DBPP sample taken during the last quarter;
(iii) the arithmetic average of DBP quarterly
					 results for the last four quarters for each monitoring location (LRAA). If the
					 LRAA calculated based on fewer than four quarters of data would cause the MCL
					 to be exceeded regardless of the monitoring results of subsequent quarters, the
					 system must report this information to the State as part of the first report
					 due following the end of the quarter or anytime thereafter that this
					 determination is made. If the system is required to conduct monitoring at a
					 frequency that is less than quarterly, the system must make compliance
					 calculations beginning with the first compliance sample unless the system is
					 required to conduct increased monitoring under section
					 5-1.52  table 9A
					 or 5-1.51 of this Subpart;
(iv)
					 whether the MCL for Total Trihalomethanes (TTHM) and/or Halo Acetic Acids (5)
					 (HAA5) was violated at any monitoring location;
(v) any operational evaluation levels that
					 were exceeded during the quarter and, if so, the location and date, and the
					 calculated TTHM and HAA5 levels;
(vi) if the system is a surface water system
					 or a system using a source of ground water under the direct influence of
					 surface water, and seeking to qualify for or remain on reduced TTHM/HAA5
					 monitoring, source water Total Organic Carbon (TOC) information must be
					 reported for each treatment plant that treats surface water or ground water
					 under the direct influence of surface water, as follows:
(a) the number of source water TOC samples
					 taken each month during last quarter;
(b) the date and result of each TOC sample
					 taken during last quarter;
(c) the
					 quarterly average of monthly TOC samples taken during the last
					 quarter;
(d) the running annual
					 average (RAA) of quarterly TOC averages from the past four quarters;
(e) whether the TOC RAA exceeded 4.0
					 mg/L.