La. Admin. Code tit. 51 § XII-1135
Current through Register Vol. 50, No. 11, November 20, 2024
Section XII-1135 - Monthly ReportA. General. Each supplier with a surface water or GWUDISW treatment facility shall submit a monthly written report on the operation of each facility to the DHH by the tenth day of the following month. Such report shall be signed by a certified operator of the public water system.B. Combined Filter Effluent Turbidity Results. The monthly report shall include the following results of samples collected from the combined filter effluent (or from an alternate compliance sampling point as approved by DHH on a case-by-case basis). 1. The highest individual turbidity measurement determined within each four hour monitoring period for each day that the system is in operation. Suppliers operating treatment facilities continuously shall report the highest individual turbidity measurement for each of the following four hour monitoring periods: c. 8:01 am - 12:00 pm (noon);f. 8:01 pm - 12:00 am (midnight). NOTE: Suppliers which do not operate their treatment facilities continuously shall utilize these same time periods, as applicable, for reporting purposes. Times when there is no combined filter effluent available for monitoring, such as when the plant is not in operation, shall also be recorded by the supplier and such events shall be clearly identified and reported on the monthly report.
2. The number and percent of turbidity measurements reported under Paragraph 1 of this Subsection which are less than or equal to the performance standard specified for each filtration technology in §1115 of this Chapter, or as required for an alternative filtration technology.3. The maximum daily raw water turbidity.4. For public water systems using surface water or GWUDISW which utilize conventional or direct filtration treatment, the monthly report shall advise whether or not combined filter effluent turbidity monitoring has been conducted continuously and whether or not the measurements were recorded every 15 minutes. The monthly report shall also indicate the date and time when there is a failure in the continuous turbidity monitoring equipment or plant out of service as well as the date and time that such equipment/plant was placed back into service.5. At the special request of the state health officer on a case-by-case basis, the supplier shall also provide an additional report listing the date and value of any other combined filter effluent turbidity measurement recorded by the supplier which exceeded the performance levels specified in §1115 of this Chapter and any corresponding raw water turbidity levels.C. Disinfection Monitoring Results. The monthly report shall include the following disinfection monitoring results. 1. The date and duration of each instance when the disinfectant residual in water supplied to the distribution system is less than 0.5 mg/l free chlorine or 0.5 mg/l chloramine residual (measured as total chlorine) and when the DHH was notified of the occurrence.2. The following information on samples taken from the distribution system: a. the number of samples where the disinfectant residual is measured; andb. the number of measurements where the disinfectant residual is less than 0.5 mg/l free chlorine or 0.5 mg/l chloramine residual (measured as total chlorine). D. Explanation of Cause of Violation. The monthly report shall include a written explanation of the cause of any violation of performance standards specified in §§1115, 1117, or 1119 and operating criteria specified in §1131 of this Chapter.E. Individual Filter Turbidity Results/Additional Actions-for Systems Serving at Least 10,000 Individuals 1. For public water systems using surface water or GWUDISW which serve at least 10,000 individuals and utilizes conventional or direct filtration treatment, the monthly report shall advise whether or not individual filter turbidity monitoring has been conducted continuously and whether or not the measurements were recorded every 15 minutes. Such systems shall additionally report individual filter turbidity measurement results taken only if measurements demonstrate one or more of the following four exceedance conditions. a. For any individual filter that has a measured turbidity level of greater than 1.0 NTU in two consecutive measurements taken 15 minutes apart, the system shall report the filter number, the turbidity measurement, and the date(s) on which the exceedance occurred. In addition, the system shall 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 report that the profile has been produced or report the obvious reason for the exceedance.b. 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 off-line, the system shall report the filter number, the turbidity, and the date(s) on which the exceedance occurred. In addition, the system shall 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 report that the profile has been produced or report the obvious reason for the exceedance.c. 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 shall report the filter number, the turbidity measurement, and the date(s) on which the exceedance occurred. In addition, the system shall conduct a self-assessment of the filter within 14 days of the exceedance and report that the self-assessment was conducted. The self-assessment shall consist of at least the following components: an in-depth evaluation of filter performance, including analysis of historical filtered water turbidity from the filter; development of a filter profile; identification and prioritization of factors limiting filter performance; evaluation of the applicability of corrections; and, preparation of a filter self-assessment report.d. 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 shall report the filter number, the turbidity measurement, and the date(s) on which the exceedance occurred. In addition, the system shall arrange for the conduct of a comprehensive performance evaluation (CPE) by DHH or a third party approved by DHH no later than 30 days following the exceedance and have the evaluation completed and submitted to DHH no later than 90 days following the exceedance. For systems experiencing multiple exceedances, only one CPE is adequate until that CPE has been completed and the appropriate corrective actions taken. i. This CPE shall be considered a compliance CPE; thus, either or both of the following shall be considered a violation(s) of this Chapter: (a.) failure to respond in writing to performance-limiting factors identified in the CPE within 45 days after receipt of the report, indicating how and on what schedule the system will address performance-limiting factors noted in the report; or(b.) failure to correct the performance-limiting factors identified in the CPE within a time schedule acceptable to DHH.2. When a filter profile/obvious reason, self-assessment, or CPE has been triggered by the turbidity results of an individual filter, the following additional information for such filter shall be reported in the monthly report.a. Data recorded relative to the occurrence of a failure in the continuous turbidity monitoring equipment for the affected individual filter or filter out of service conditions, the identity of the individual filter, the date and time of such equipment failure or out of service conditions as well as the date and time that the equipment and/or filter was placed back into service.F. Individual Filter Turbidity Results/Additional Actions-for Systems Serving Less than 10,000 Individuals 1. For public water systems using surface water or GWUDISW which serve less than 10,000 individuals and utilizes conventional or direct filtration treatment, the monthly report shall advise whether or not individual filter turbidity monitoring has been conducted continuously and whether or not the measurements were recorded every 15 minutes. Such systems shall additionally report individual filter turbidity measurement results taken only if measurements demonstrate one or more of the following three exceedance conditions. a. For any individual filter [or the turbidity of the combined filter effluent (CFE) for systems having only two filters and which monitor the CFE in lieu of monitoring each individual filter] that has a measured turbidity level of greater than 1.0 NTU in two consecutive measurements taken 15 minutes apart, the system shall report the filter number(s), the turbidity measurement(s), and the date(s) on which the exceedance occurred. In addition, the system shall report the cause or obvious reason (if known) for the exceedance.b. For any individual filter [or the turbidity of the CFE for systems having only two filters and which monitor the CFE in lieu of monitoring each 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 [unless a CPE as specified in Subparagraph c of this Paragraph was required], the system shall report the filter number(s), the turbidity measurement(s), and the dates on which the exceedances occurred. In addition, the system shall conduct a self-assessment of the filter within 14 days of the last exceedance date (the exceedance which occurred during the third straight month). The self-assessment shall consist of at least the following components: an in-depth evaluation of filter performance, including analysis of historical filtered water turbidity from the filter; development of a filter profile; identification and prioritization of factors limiting filter performance; evaluation of the applicability of corrections; and, preparation of a filter self-assessment report. The filter self-assessment report shall also include the date that the self-assessment was triggered and the date that the self-assessment was completed. Systems having only two filters and which monitor the CFE in lieu of monitoring each individual filter shall conduct a self- assessment on both filters.c. For any individual filter [or the turbidity of the CFE for systems having only two filters and which monitor the CFE in lieu of monitoring each 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 shall arrange for the conduct of a comprehensive performance evaluation (CPE) by DHH or a third party approved by DHH no later than 60 days following the exceedance and have the evaluation completed and submitted to DHH no later than 120 days following the last exceedance date (the exceedance which occurred during the second straight month). For systems experiencing multiple exceedances, only one CPE is adequate until that CPE has been completed and the appropriate corrective actions taken. If a CPE has been completed by DHH or a third party approved by DHH within the 12 prior months or the system and DHH are jointly participating in an ongoing Comprehensive Technical Assistance (CTA) project at the system, a new CPE is not required. i. This CPE shall be considered a compliance CPE; thus, either or both of the following shall be considered a violation(s) of this Chapter: (a.) failure to respond in writing to performance-limiting factors identified in the CPE within 45 days after receipt of the report, indicating how and on what schedule the system will address performance-limiting factors noted in the report; or(b.) failure to correct the performance-limiting factors identified in the CPE within a time schedule acceptable to DHH.2. When the cause/obvious reason, self-assessment, or CPE has been triggered by the turbidity results of an individual filter [or the turbidity of the CFE for systems having only two filters and which monitor the CFE in lieu of monitoring each individual filter], the following additional information for such filter(s) shall be reported in the monthly report.a. Data recorded relative to the occurrence of a failure in the continuous turbidity monitoring equipment for the affected individual filter(s) or filter out of service conditions, the identity of the individual filter(s), the date and time of such equipment failure or out of service conditions as well as the date and time that the equipment and/or filter(s) was placed back into service.La. Admin. Code tit. 51, § XII-1135
Promulgated by the Department of Health and Hospitals, Office of Public Health, LR 28:2526 (December 2002), amended LR 35:1244 (July 2009), Amended LR 42412 (3/1/2016).AUTHORITY NOTE: Promulgated in accordance with R.S 40:4(A)(8)(13) and R.S. 40:5(2)(3)(5)(6)(17)(20).