N.M. Code R. § 20.7.4.12
A. In order to operate the various types of treatment processes at public water supply systems, the indicated level of certification shall be required:
Type of Treatment Process Population Served 25 to 500 501 to 5,000 5,001 to 10,000 10,001 to 20,000 20,000+ Filtration (sand, gravity) SWA WS3 WS3 WS3 WS4 Coagulation, sedimentation, filtration SWA WS3 WS3 WS4 WS4 Chemical precipitation (Mn, Fe, softening) SWA WS3 WS3 WS4 WS4 Aeration SW WS2 WS3 WS3 WS4 Odor and taste control (activated carbon) SW WS2 WS3 WS3 WS4 Chemical addition (stabilization) SW WS2 WS2 WS3 WS4 Pressure filtration SWA WS2 WS2 WS3 WS4 Ion exchange (softening, defluoridation) SWA WS2 WS3 WS3 WS4 Chlorination SW WS2 WS2 WS3 WS4 Fluoridation SW WS2 WS2 WS3 WS4 Arsenic removal SWA WS3 WS3 WS3 WS4 Radionuclide removal SWA WS3 WS3 WS3 WS4 Special, such as desalinization SWA WS4 WS4 WS4 WS4 Production, ground water only SW WS1 WS2 WS3 WS4
Type of Treatment Process
Population Served
25 to 500
501 to 5,000
5,001 to 10,000
10,001 to 20,000
20,000+
Filtration (sand, gravity)
SWA
WS3
WS3
WS3
WS4
Coagulation, sedimentation, filtration
SWA
WS3
WS3
WS4
WS4
Chemical precipitation (Mn, Fe, softening)
SWA
WS3
WS3
WS4
WS4
Aeration
SW
WS2
WS3
WS3
WS4
Odor and taste control (activated carbon)
SW
WS2
WS3
WS3
WS4
Chemical addition (stabilization)
SW
WS2
WS2
WS3
WS4
Pressure filtration
SWA
WS2
WS2
WS3
WS4
Ion exchange (softening, defluoridation)
SWA
WS2
WS3
WS3
WS4
Chlorination
SW
WS2
WS2
WS3
WS4
Fluoridation
SW
WS2
WS2
WS3
WS4
Arsenic removal
SWA
WS3
WS3
WS3
WS4
Radionuclide removal
SWA
WS3
WS3
WS3
WS4
Special, such as desalinization
SWA
WS4
WS4
WS4
WS4
Production, ground water only
SW
WS1
WS2
WS3
WS4
B. In order to operate various types of distribution systems at public water supply systems, the indicated level of certification shall be required:
Type of Distribution Systems Population Served 25 to 500 501 to 5,000 5,001 to 10,000 10,001 to 20,000 20,000+ Distribution of treated surface water SW DS2 DS2 DS2 DS3 Distribution of chlorinated groundwater SW DS2 DS2 DS2 DS3 Distribution of unchlorinated groundwater SW DS1 DS2 DS2 DS3
Type of Distribution Systems
Population Served
25 to 500
501 to 5,000
5,001 to 10,000
10,001 to 20,000
20,000+
Distribution of treated surface water
SW
DS2
DS2
DS2
DS3
Distribution of chlorinated groundwater
SW
DS2
DS2
DS2
DS3
Distribution of unchlorinated groundwater
SW
DS1
DS2
DS2
DS3
C. In order to perform the various types of water sampling at public water supply systems after January 1, 2008, the indicated level of certification shall be required:
Type of Water Sampling Population Served 25 to 500 501 to 5,000 5,001 to 10,000 10,001 to 20,000 20,000+ Microbiology SW or WST1 WST1 WST1 WST1 WST1 Chemical and Radiological WST2 WST2 WST2 WST2 WST2
Type of Water Sampling
Population Served
25 to 500
501 to 5,000
5,001 to 10,000
10,001 to 20,000
20,000+
Microbiology
SW or WST1
WST1
WST1
WST1
WST1
Chemical and Radiological
WST2
WST2
WST2
WST2
WST2
[20.7.4.12 NMAC - Rp, 20 NMAC 7.4.112, 1-26-01; A, 11-15-06]