New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTION
Chapter 7 - WASTEWATER AND WATER SUPPLY FACILITIES
Part 10 - DRINKING WATER
Section 20.7.10.500 - MONITORING REQUIREMENTS
Current through Register Vol. 35, No. 18, September 24, 2024
A. Pursuant to NMSA 1978, 74-1-13.1, the department shall test non-transient non-community water systems for arsenic, fluoride and radionuclides. The reporting and public notification requirements for non-transient non-community water systems for these contaminants shall be identical to those for community water systems as set forth in 40 CFR Subpart Q.
B. Each supplier of water shall begin routine sampling in accordance with 40 CFR Part 141 within 90 days after providing water for human consumption.
C. All public water systems shall conduct sampling at the rates set forth in 40 CFR Part 141, Subpart C, except that non-transient non-community systems shall conduct coliform sampling at the same rates as like-sized community water systems in 40 CFR 141.21(a)(2) and except that consecutive systems shall sample as required in Subsection E of Section 500 of this part. The department may order a supplier of water, when necessary, to conduct more frequent sampling than is required under 40 CFR Part 141.
D. The department may order a public water system that uses two or more water sources to collect special purpose samples directly from the water sources, in addition to routine samples from sampling points as required under 40 CFR Part 141.
E. Consecutive systems shall collect samples for those contaminants for which monitoring is required in the distribution system. This includes measurement of disinfectant residuals and collection of samples for total coliform, lead and copper, and disinfection byproducts.
F. All public water systems must have sample taps to collect water representative of each applicable facility at sampling points required under 40 CFR Part 141.
G. For systems subject to triggered monitoring under 40 CFR Part 141 ground water rule: for each total coliform positive sample collected from the distribution system, at least one ground water source sample must be collected from each ground water source that was in use at the time the total coliform-positive sample was collected.
