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RULE §290.46Minimum Acceptable Operating Practices for Public Drinking Water Systems

      (vi) the maintenance records for water system equipment and facilities. For systems using reverse osmosis or nanofiltration, maintain records of each clean-in-place process including the date, duration, and procedure used for each event;

      (vii) for systems that do not employ full-time operators to meet the requirements of subsection (e) of this section, a daily record or a monthly summary of the work performed and the number of hours worked by each of the part-time operators used to meet the requirements of subsection (e) of this section; and

      (viii) the owner or manager of a public water system that is operated by a volunteer to meet the requirements of subsection (e) of this section, shall maintain a record of each volunteer operator indicating the name of the volunteer, contact information for the volunteer, and the time period for which the volunteer is responsible for operating the public water system. These requirements apply to full-time and part-time licensed volunteer operators. Part-time licensed volunteer operators are excluded from the requirements of clause (vii) of this subparagraph.

    (B) The following records shall be retained for at least three years:

      (i) copies of notices of violation and any resulting corrective actions. The records of the actions taken to correct violations of primary drinking water regulations must be retained for at least three years after the last action taken with respect to the particular violation involved;

      (ii) copies of any public notice issued by the water system;

      (iii) the disinfectant residual monitoring results from the distribution system;

      (iv) the calibration records for laboratory equipment, flow meters, rate-of-flow controllers, on-line turbidimeters, and on-line disinfectant residual analyzers;

      (v) the records of backflow prevention device programs;

      (vi) the raw surface water monitoring results and source water monitoring plans required by §290.111 of this title (relating to Surface Water Treatment) must be retained for three years after bin classification required by §290.111 of this title;

      (vii) notification to the executive director that a system will provide 5.5-log Cryptosporidium treatment in lieu of raw surface water monitoring;

      (viii) except for those specified in subparagraphs (C)(iv) and (E)(i) of this paragraph, the results of all surface water treatment monitoring that are used to demonstrate log inactivation or removal;

      (ix) free and total chlorine, monochloramine, ammonia, nitrite, and nitrate monitoring results if chloramines are used in the water system; and

      (x) the records of treatment effectiveness monitoring for systems using reverse osmosis or nanofiltration membranes. Treatment effectiveness monitoring includes the parameters for determining when maintenance is required. Examples of parameters to be monitored include conductivity (or total dissolved solids) on each membrane unit, pressure differential across a membrane vessel, flow, flux, and water temperature. At a minimum, systems using reverse osmosis or nanofiltration membranes must monitor the conductivity (or total dissolved solids) of the feed and permeate water once per day.

    (C) The following records shall be retained for a period of five years after they are no longer in effect:

      (i) the records concerning a variance or exemption granted to the system;

      (ii) Concentration Time (CT) studies for surface water treatment plants;

      (iii) the Recycling Practices Report form and other records pertaining to site-specific recycle practices for treatment plants that recycle; and

      (iv) the turbidity monitoring results and exception reports for individual filters as required by §290.111 of this title.

    (D) The following records shall be retained for at least five years:

      (i) the results of microbiological analyses;

      (ii) the results of inspections (as required in subsection (m)(1) of this section) for all water storage and pressure maintenance facilities;

      (iii) the results of inspections (as required by subsection (m)(2) of this section) for all pressure filters;

      (iv) documentation of compliance with state approved corrective action plan and schedules required to be completed by groundwater systems that must take corrective actions;

      (v) documentation of the reason for an invalidated fecal indicator source sample and documentation of a total coliform-positive sample collected at a location with conditions that could cause such positive samples in a distribution system;

      (vi) notification to wholesale system(s) of a distribution coliform-positive sample for consecutive systems using groundwater;

      (vii) Consumer Confidence Report compliance documentation;

      (viii) records of the lowest daily residual disinfectant concentration and records of the date and duration of any failure to maintain the executive director-approved minimum specified disinfectant residual for a period of more than four hours for groundwater systems providing 4-log treatment;

      (ix) records of executive director-specified compliance requirements for membrane filtration, records of parameters specified by the executive director for approved alternative treatment and records of the date and duration of any failure to meet the membrane operating, membrane integrity, or alternative treatment operating requirements for more than four hours for groundwater systems. Membrane filtration can only be used if it is approved by the executive director and if it can be properly validated;

      (x) assessment forms, regardless of who conducts the assessment, and documentation of corrective actions completed or documentation of corrective actions required but not yet completed as a result of those assessments and any other available summary documentation of the sanitary defects and corrective actions taken in accordance with §290.109 of this title (relating to Microbial Contaminants) for executive director review;

      (xi) seasonal public water systems shall maintain executive director-approved start-up procedures and certification documentation in accordance with §290.109 of this title for executive director review; and

      (xii) records of any repeat sample taken that meets the criteria for an extension of the 24-hour period for collecting repeat samples under §290.109 of this title.

    (E) The following records shall be retained for at least ten years:

      (i) copies of Monthly Operating Reports and any supporting documentation including turbidity monitoring results of the combined filter effluent;

      (ii) the results of chemical analyses;

      (iii) any written reports, summaries, or communications relating to sanitary surveys of the system conducted by the system itself, by a private consultant, or by the executive director shall be kept for a period not less than ten years after completion of the survey involved;

      (iv) copies of the Customer Service Inspection reports required by subsection (j) of this section;

      (v) copy of any Initial Distribution System Evaluation (IDSE) plan, report, approval letters, and other compliance documentation required by §290.115 of this title (relating to Stage 2 Disinfection Byproducts (TTHM and HAA5));

      (vi) state notification of any modifications to an IDSE report;

      (vii) copy of any 40/30 certification required by §290.115 of this title;

      (viii) documentation of corrective actions taken by groundwater systems in accordance with §290.116 of this title (relating to Groundwater Corrective Actions and Treatment Techniques);

      (ix) any Sample Siting Plans required by §290.109(d)(6) of this title and monitoring plans required by §290.121(b) of this title (relating to Monitoring Plans); and

      (x) records of the executive director-approved minimum specified disinfectant residual and executive director-approved membrane system integrity monitoring results for groundwater systems providing 4-log treatment, including wholesale, and consecutive systems, regulated under §290.116(c) of this title.

    (F) A public water system shall maintain records relating to lead and copper requirements under §290.117 of this title (relating to Regulation of Lead and Copper) for no less than 12 years. Any system subject to the requirements of §290.117 of this title shall retain on its premises original records of all sampling data and analyses, reports, surveys, letters, evaluations, schedules, executive determinations, and any other information required by the executive director under §290.117 of this title. These records include, but are not limited to, the following items: tap water monitoring results including the location of each site and date of collection; certification of the volume and validity of first-draw-tap sample criteria via a copy of the laboratory analysis request form; where residents collected the sample; certification that the water system informed the resident of proper sampling procedures; the analytical results for lead and copper concentrations at each tap sample site; and designation of any substitute site not used in previous monitoring periods.

    (G) A public water system shall maintain records relating to special studies and pilot projects, special monitoring, and other system-specific matters as directed by the executive director.

  (4) Public water systems shall submit routine reports and any additional documentation that the executive director may require to determine compliance with the requirements of this chapter.

    (A) The reports must be submitted to the Texas Commission on Environmental Quality, Water Supply Division, MC 155, P.O. Box 13087, Austin, Texas 78711-3087 by the tenth day of the month following the end of the reporting period.

    (B) The reports must contain all the information required by the drinking water standards and the results of any special monitoring tests which have been required.

    (C) The reports must be completed in ink, typed, or computer-printed and must be signed by the licensed water works operator.

  (5) All public water systems that are affected utilities must maintain the following records for as long as they are applicable to the system:

    (A) An emergency preparedness plan approved by the executive director and a copy of the approval letter.

    (B) All required operating and maintenance records for auxiliary power equipment, including periodic testing of the auxiliary power equipment under load and any associated automatic switch over equipment.

    (C) Copies of the manufacturer's specifications for all generators that are part of the approved emergency preparedness plan.

(g) Disinfection of new or repaired facilities. Disinfection by or under the direction of water system personnel must be performed when repairs are made to existing facilities and before new facilities are placed into service. Disinfection must be performed in accordance with American Water Works Association (AWWA) requirements and water samples must be submitted to a laboratory approved by the executive director. The sample results must indicate that the facility is free of microbiological contamination before it is placed into service. When it is necessary to return repaired mains to service as rapidly as possible, doses may be increased to 500 mg/L and the contact time reduced to 1/2 hour.

(h) Calcium hypochlorite. A supply of calcium hypochlorite disinfectant shall be kept on hand for use when making repairs, setting meters, and disinfecting new mains prior to placing them in service.

(i) Plumbing ordinance. Public water systems must adopt an adequate plumbing ordinance, regulations, or service agreement with provisions for proper enforcement to insure that neither cross-connections nor other unacceptable plumbing practices are permitted (See §290.47(b) of this title (relating to Appendices)). Should sanitary control of the distribution system not reside with the purveyor, the entity retaining sanitary control shall be responsible for establishing and enforcing adequate regulations in this regard. The use of pipes and pipe fittings that contain more than 0.25% lead or solders and flux that contain more than 0.2% lead is prohibited for installation or repair of any public water supply and for installation or repair of any plumbing in a residential or nonresidential facility providing water for human consumption and connected to a public drinking water supply system. This requirement may be waived for lead joints that are necessary for repairs to cast iron pipe.

(j) Customer service inspections. A customer service inspection certificate shall be completed prior to providing continuous water service to new construction, on any existing service either when the water purveyor has reason to believe that cross-connections or other potential contaminant hazards exist, or after any material improvement, correction, or addition to the private water distribution facilities. Any customer service inspection certificate form which varies from the format found in commission Form 20699 must be approved by the executive director prior to being placed in use.

  (1) Individuals with the following credentials shall be recognized as capable of conducting a customer service inspection certification.


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