15 MAC Pt. 20, R. 1.3.1
Coliform Sampling and Analyses, Treatment Technique Triggers and Assessment
Cite as 15 Miss. Admin. Code Pt. 20, R. 1.3.1
Coliform Sampling and Analyses, Treatment Technique Triggers and Assessment
Requirements. It shall be the responsibility of each supplier of water to comply with the
treatment technique triggers, assessment requirements, and Coliform Monitoring and
Analytical Requirements as stipulated in the National Primary Drinking Water
Regulations as published under Title 40 Code of Federal Regulations Section 141.21 or
any subsequent revisions thereto including 141.851 – 141.860 except that the following
optional provisions of Title 40 Code of Federal Regulations Section 141.21, 141.854,
141.855, and 141.857 are not adopted:
1. The provision of Title 40 Code of Federal Regulations Section 141.21 (a)(2) concerning
the reduction of the monitoring frequency for community water systems serving 1,000 or
fewer persons;
2. The provision of Title 40 Code of Federal Regulations Section 141.21 (a)(5) concerning
waiver of the time limit for sampling after a turbidity sampling result exceeds 1 NTU;
3. The provision of Title 40 Code of Federal Regulations Section 141.21 (b)(3) concerning
collection of large volume repeat samples in containers of any size;
4. The provision of Title 40 Code of Federal Regulations Section 141.21 (d) concerning
agents other than State personnel conducting sanitary surveys;
5. The provisions of Title 40 Code of Federal Regulations Section 141.21 (e)(2) with respect to
waiver of E. Coli testing on a total coliform positive sample;
6. Provisions allowing systems to perform reduced monitoring below the minimum of monthly.
All systems regardless of type and operational status will be on monthly monitoring
schedules.