New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTION
Chapter 7 - WASTEWATER AND WATER SUPPLY FACILITIES
Part 10 - DRINKING WATER
Section 20.7.10.9 - DOCUMENTATION REQUIRED FOR POPULATION DETERMINATION

A. Owners or operators of community water systems shall document, and make available to the department upon request, a determination of the population served by the water system. The residential portion of the population shall be calculated by multiplying the number of service connections by the average household size in the county where the service connections are located. The most recent census conducted by the U.S. census bureau shall be the source of the average household size data. Water haulers shall document, and make available to the department upon request, the number of residential accounts using water for human consumption.

B. Owners or operators of nontransient non-community water systems and transient non-community water system shall document, and make available to the department upon request, a determination of the population served (e.g., number of employees, number of students, restaurant seating capacity, number of patrons, etc.)

C. Owners or operators of water systems may present written documentation to the department for consideration of a population determination that differs from that described in Subsection A or B of this section.

D. The department will document, in writing, approval or disapproval of any population determination that differs from the population determination described in Subsections A or B of this section.

E. Owners or operators of public water systems shall make the information required in this section available to the department upon request within 45 days of the request.