New Mexico Administrative Code
Title 20 - ENVIRONMENTAL PROTECTION
Chapter 7 - WASTEWATER AND WATER SUPPLY FACILITIES
Part 3 - LIQUID WASTE DISPOSAL AND TREATMENT
Section 20.7.3.503 - DESIGN; PUMP STATIONS AND EQUIPMENT
Current through Register Vol. 35, No. 18, September 24, 2024
A. Pump stations or pump chambers shall be watertight and shall be constructed of concrete, plastic, fiberglass or other approved material. Tanks and chambers shall be designed and constructed so as to serve their intended purpose, meet appropriate material and structural requirements equal to those required of septic tanks as described in 20.7.3.501 NMAC, and appropriately coated to resist corrosion with the exception of concrete tanks constructed of type V concrete. Tanks are subject to water tightness testing at the department's discretion.
B. All valves, motors, pumps, aerators and other mechanical or electrical devices shall be located where they will be accessible for inspection and repair at all times without requiring entry into the tank and protected with a locking removable cover on an access port of at least 20 inches in minimum dimension. Concrete tanks and chambers may have covers of at least 58 pounds in place of a cover and locking mechanism.
C. Pump stations or pump chambers shall be equipped with both audible and visible alarms, or remote and visual alarms, for high water and pump failure. All alarm and control circuits shall be on a separate circuit from pumps and shall be contained in weather-proof control boxes or located inside a building or other weather-proof structure. Alarms shall be placed in a conspicuous location approved by the department.
D. Pumps and equipment shall be designed to pump sewage, septic effluent or treated wastewater as appropriate, to prevent freezing and prevent siphoning of the dispersal area back to the tank and shall be sized to serve their intended purpose.
