Tapcensus

New Mexico

San Miguel County drinking water quality

43 active public water systems serve 23,659 people in San Miguel County. 3 are compliant, 40 had at least one EPA violation in the past three years, 2 are designated serious violators, and 9 carry a health flag.

Active systems 43 26 community systems
People served 24K by public water systems
Systems with violations 40 93% of active systems, past 3 years
Serious violators 2 9 systems carry a health flag

Needs attention

United World College NM3500825 · Montezuma · Non-Transient non-community system · Serves 350 2 rules violated in the past three years
Lower Colonias Mdwca NM3501225 · Pecos · Community water system · Serves 40 3 rules violated in the past three years. Unresolved: Ground Water Rule.
Pendaries Mdwca NM3574125 · Rociada · Community water system · Serves 500 5 rules violated in the past three years. Unresolved: Ground Water Rule and Public Notice Rule and Revised PN Rule.
Tecolote Mdwca NM3519325 · Las Vegas · Community water system · Serves 126 4 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions, Public Notice Rule and Revised PN Rule, and Consumer Confidence Rule.
Villanueva State Park NM3590625 · Villanueva · Transient non-community system · Serves 126 1 rule violated in the past three years. Unresolved: Ground Water Rule.
Gonzales Ranch Mdwca NM3500625 · Gonzales Ranch · Community water system · Serves 114 4 rules violated in the past three years. Unresolved: Ground Water Rule.
Ribera Mdwca NM3518525 · Ribera · Community water system · Serves 108 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Rowe Mdwca NM3518625 · Rowe · Community water system · Serves 100 4 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions and Public Notice Rule and Revised PN Rule.
Chapelle Mdwca NM3501825 · Serafina · Community water system · Serves 60 4 rules violated in the past three years. Unresolved: Revised Total Coliform Rule.
Gabaldon Mdwca NM3500525 · Las Vegas · Community water system · Serves 47 6 rules violated in the past three years. Unresolved: Ground Water Rule and Consumer Confidence Rule.

Community water systems

26 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Las Vegas (city Of)
Las Vegas
14,530 6 0
Pecos Water System
Pecos
2,133 4 0
Pendaries Mdwca
Rociada
500 5 2
East Pecos Mdwca
Pecos
413 2 0
Villanueva Mdwca
Villanueva
268 1 0
Big Mesa Water Mdwca
Conchas Dam
250 2 0
Ilfeld Mdwca
Ilfeld, San Jose
249 3 1
Tecolotito Mdwca
Tecolotito
212 1 1
Sena Mdwca
Sena
180 1 0
LA Pasada Mdwca
Pecos
164 4 2
San Juan Mdwca
San Jose
136 3 0
North San Ysidro Mdwca
San Ysidro
133 3 1
Tecolote Mdwca
Las Vegas
126 4 3
San Jose Mdwca
San Jose
119 2 1
Gonzales Ranch Mdwca
Gonzales Ranch
114 4 1
Ribera Mdwca
Ribera
108 2 1
Rowe Mdwca
Rowe
100 4 2
EL Creston Mdwca
Las Vegas
95 2 0
EL Ancon Mdwca
Ribera
89 1 0
EL Coruco Mdwca
Ribera
80 2 0
San Miguel del Vado Mdwca
San Miguel
79 2 1
Chapelle Mdwca
Serafina
60 4 1
Gabaldon Mdwca
Las Vegas
47 6 2
LA Cueva Mdwca
Pecos
46 1 0
Lower Colonias Mdwca
Pecos
40 3 1
South San Ysidro Mdwca
San Ysidro
35 1 0
Non-community systems (17: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Conchas Dam State Park Northside
Conchas Dam
450 2 0
Pendaries RV Resort
Rociada
405 2 1
United World College
Montezuma
350 2 0
Las Vegas KOA
Las Vegas
342 0 0
Pecos Dairy Queen
Pecos
300 2 0
Pecos National Historical Park-Admin
Pecos
300 1 0
Western Refinery Speedway #9117
250 1 0
Camp Blue Haven
Las Vegas
180 0 0
EL Porvenir Christian Camp
Montezuma
175 1 0
Valley Elementary and Middle School
Ribera
130 4 1
Villanueva State Park
Villanueva
126 1 1
Crossroads Market
Pecos
125 1 0
Tres Lagunas Home Owners Association
Pecos
56 1 0
Mike Mateo Elementary School
Las Vegas
50 3 0
Benedictine Monastery
Pecos
40 1 0
Pecos National Historic Park Visitor Cnt
Pecos
40 1 0
Lisboa Springs Fish Hatchery
Pecos
34 0 0
Inactive systems (44, no longer operating or reporting)

Kept for the record and excluded from the county totals above. Browse inactive systems.

About this data

Totals cover active systems. Systems serving more than one county are counted in each county. EPA counts the rules a system was in violation of, not the individual violations; one rule can carry several.

Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The New Mexico records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.