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TITLE 30ENVIRONMENTAL QUALITY
PART 1TEXAS COMMISSION ON ENVIRONMENTAL QUALITY
CHAPTER 290PUBLIC DRINKING WATER
SUBCHAPTER DRULES AND REGULATIONS FOR PUBLIC WATER SYSTEMS
RULE §290.46Minimum Acceptable Operating Practices for Public Drinking Water Systems

    (A) Surface water systems that serve no more than 1,000 connections must use at least one operator who holds a Class "B" or higher surface water license. Part-time operators may be used to meet the requirements of this subparagraph if the operator is completely familiar with the design and operation of the plant and spends at least four consecutive hours at the plant at least once every 14 days and the system also uses an operator who holds a Class "C" or higher surface water license. Effective January 1, 2007, the public water system must use at least one operator who has completed the Surface Water Production I course and the Surface Water Production II course.

    (B) Surface water systems that serve more than 1,000 connections must use at least two operators; one of the required operators must hold a Class "B" or higher surface water license and the other required operator must hold a Class "C" or higher surface water license. Each of the required operators must work at least 32 hours per month at the public water system's production, treatment, or distribution facilities. Effective January 1, 2007, the public water system must use at least two operators who have completed the Surface Water Production I course and the Surface Water Production II course.

    (C) Each surface water treatment plant must have at least one Class "C" or higher surface water operator on duty at the plant when it is in operation or the plant must be provided with continuous turbidity and disinfectant residual monitors with automatic plant shutdown and alarms to summon operators so as to ensure that the water produced continues to meet the commission's drinking water standards during periods when the plant is not staffed.

    (D) Public water systems shall not allow Class "D" operators to adjust or modify the treatment processes at surface water treatment plant unless an operator who holds a Class "C" or higher surface license is present at the plant and has issued specific instructions regarding the proposed adjustment.

(f) Operating records and reports. All public water systems must maintain a record of water works operation and maintenance activities and submit periodic operating reports.

  (1) The public water system's operating records must be organized, and copies must be kept on file or stored electronically.

  (2) The public water system's operating records must be accessible for review during inspections and be available to the executive director upon request.

  (3) All public water systems shall maintain a record of operations.

    (A) The following records shall be retained for at least two years:

      (i) the amount of chemicals used:

        (I) Systems that treat surface water or groundwater under the direct influence of surface water shall maintain a record of the amount of each chemical used each day.

        (II) Systems that serve 250 or more connections or serve 750 or more people shall maintain a record of the amount of each chemical used each day.

        (III) Systems that serve fewer than 250 connections, serve fewer than 750 people, and use only groundwater or purchased treated water shall maintain a record of the amount of each chemical used each week;

      (ii) the volume of water treated and distributed:

        (I) Systems that treat surface water or groundwater under the direct influence of surface water shall maintain a record of the amount of water treated and distributed each day.

        (II) Systems that serve 250 or more connections or serve 750 or more people shall maintain a record of the amount of water distributed each day.

        (III) Systems that serve fewer than 250 connections, serve fewer than 750 people, and use only groundwater or purchase treated water shall maintain a record of the amount of water distributed each week.

        (IV) Systems that serve 250 or more connections or serve 750 or more people and also add chemicals or provide pathogen or chemical removal shall maintain a record of the amount of water treated each day.

        (V) Systems that serve fewer than 250 connections, serve fewer than 750 people, use only groundwater or purchase treated water, and also add chemicals or provide pathogen or chemical removal shall maintain a record of the amount of water treated each week;

      (iii) the date, location, and nature of water quality, pressure, or outage complaints received by the system and the results of any subsequent complaint investigation;

      (iv) the dates that dead-end mains were flushed;

      (v) the dates that storage tanks and other facilities were cleaned;

      (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;

Cont'd...

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