New Mexico water quality
New Mexico has 1,104 active public water systems (2,726 on file total), 592 of them graded by TapGraded.
Grade distribution
Biggest water systems
ALBUQUERQUE WATER SYSTEM
ALBUQUERQUE, NM · 560,326 served
RIO RANCHO WATER & WW SERVICES
RIO RANCHO, NM · 107,350 served
LAS CRUCES MUNICIPAL WATER SYSTEM
LAS CRUCES, NM · 98,175 served
SANTA FE WATER SYSTEM (CITY OF)
SANTA FE, NM · 90,810 served
ROSWELL MUNICIPAL WATER SYSTEM
ROSWELL, NM · 54,025 served
FARMINGTON WATER SYSTEM
FARMINGTON, NM · 47,655 served
EPCOR WATER NEW MEXICO INC CLOVIS
CLOVIS, NM · 41,066 served
HOBBS MUNICIPAL WATER SUPPLY
HOBBS, NM · 40,418 served
ALAMOGORDO DOMESTIC WATER SYSTEM
LA LUZ, NM · 35,301 served
UNIVERSITY OF NEW MEXICO
ALBUQUERQUE, NM · 35,000 served
Lowest-graded systems
Active, graded systems serving at least 10,000 people, ordered by lowest Tap Grade first.
DONA ANA MDWCA
DONA ANA, NM · 16,987 served
GALLUP WATER SYSTEM
GALLUP, NM · 20,880 served
CAMINO REAL REGIONAL UTILITY AUTHORITY
SUNLAND PARK, NM · 19,466 served
BELEN WATER SYSTEM
BELEN, NM · 10,830 served
LAS VEGAS (CITY OF)
LAS VEGAS, NM · 14,530 served
LOVINGTON MUNICIPAL WATER SUPPLY
LOVINGTON, NM · 13,539 served
ROSWELL MUNICIPAL WATER SYSTEM
ROSWELL, NM · 54,025 served
GRANTS DOMESTIC WATER SYSTEM
GRANTS, NM · 10,523 served
ALAMOGORDO DOMESTIC WATER SYSTEM
LA LUZ, NM · 35,301 served
RIO RANCHO WATER & WW SERVICES
RIO RANCHO, NM · 107,350 served
Cities in New Mexico
Source: EPA SDWIS/ECHO · Data as of 2026Q2