LAC 51:XII.907. Analytical and Reporting Requirements

A. Compliance samples for total coliform and Escherichia coli (E. coli) shall be analyzed by a certified microbiology laboratory/drinking water. The microbiology laboratory shall be certified by the state health officer for each method (and associated contaminant(s)) used for compliance monitoring analyses under this Part. B. Compliance samples shall be analyzed to determine the presence or absence of total coliforms and E. coli; a determination of density is not required. If a routine or repeat sample result is positive for total coliform, the sample shall also be analyzed for E. coli immediately. C. For compliance samples, laboratories shall use a State-approved laboratory report that contains the following information: 1. public water system (PWS) name and State-assigned PWS ID number; 2. sample identification number; 3. State-assigned point of collection (POC) site ID No. and POC address; 4. sample type (e.g., routine, repeat, source, replacement, investigative or other special purpose sample); 5. date and time of collection; 6. disinfectant residual (specify free or total and units of measurement); 7. name of sampler/collector; 8. date and time of sample receipt by the laboratory; 9. any deficiency in the condition of the sample; 10. date and time analysis begins; 11. analytical technique/method used; 12. results of analysis; 13. any remarks [quality control failures, etc.]; and 14. name and signature of the analyst performing the analysis. D. Except for a positive sample(s) which is required under this Part to be reported sooner, compliance sample results shall be reported in a format approved by the state health officer by the tenth day of the following month after the end of the monitoring period.