Tapcensus

New Mexico

Taos County drinking water quality

95 active public water systems serve 25,146 people in Taos County. 24 are compliant, 71 had at least one EPA violation in the past three years, 5 are designated serious violators, and 13 carry a health flag.

Active systems 95 43 community systems
People served 25K by public water systems
Systems with violations 71 75% of active systems, past 3 years
Serious violators 5 13 systems carry a health flag

Needs attention

Ranchos de Taos Mdwca NM3507029 · Ranchos De Taos · Community water system · Serves 750 4 rules violated in the past three years. Unresolved: Ground Water Rule and Lead and Copper Rule Revisions.
Costilla Mdwca NM3505929 · Costilla · Community water system · Serves 244 5 rules violated in the past three years. Unresolved: Ground Water Rule, Lead and Copper Rule Revisions, and Consumer Confidence Rule.
Canon Mdwca NM3505629 · Canon · Community water system · Serves 200 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.
Ojo Caliente Mineral Springs NM3590521 · Ojo Caliente · Non-Transient non-community system · Serves 200 4 rules violated in the past three years. Unresolved: Ground Water Rule.
Eagle Rock Village NM3500329 · Questa · Community water system · Serves 35 5 rules violated in the past three years. Unresolved: Ground Water Rule, Lead and Copper Rule Revisions, and Consumer Confidence Rule.
Questa Water System NM3506829 · Questa · Community water system · Serves 2,337 3 rules violated in the past three years. Unresolved: Ground Water Rule.
Ojo Caliente Mdwca NM3506621 · Ojo Caliente · Community water system · Serves 226 2 rules violated in the past three years. Unresolved: Lead and Copper Rule Revisions.
Upper Arroyo Hondo Mdwca NM3507829 · Arroyo Hondo · Community water system · Serves 195 4 rules violated in the past three years. Unresolved: Ground Water Rule and Lead and Copper Rule Revisions.
Vadito Mdwca NM3507929 · Vadito · Community water system · Serves 111 3 rules violated in the past three years. Unresolved: Ground Water Rule and Public Notice Rule and Revised PN Rule.
Baskin Robbins Taos NM3597629 · Taos · Transient non-community system · Serves 100 1 rule violated in the past three years. Unresolved: Ground Water Rule.

3 more systems with a serious violator or health flag designation are in the lists below.

Community water systems

43 systems, largest first
SystemServesStatusRules violated, 3 yrUnresolved
Taos Municipal Water System
Taos 		5,528 1 0
Questa Water System
Questa 		2,337 3 1
EL Prado Water & Sanitation District
El Prado 		1,076 1 0
Village of Taos Ski Valley
Taos Ski Valley 		1,025 1 0
Llano Quemado Mdwca
Ranchos De Taos 		800 1 0
Ranchos de Taos Mdwca
Ranchos De Taos 		750 4 2
Talpa Mdwca
Taos 		700 1 0
Red River Water System
Red River 		679 1 0
Chamisal Mdwca
Chamisal 		550 1 0
Penasco Mdwca
Penasco 		549 2 0
Arroyo Seco Mdwca
Arroyo Seco 		444 4 0
Union del Llano Mdwca
Llano 		400 4 1
Valle Escondido Homeowners Association
Taos 		354 0 0
Tres Piedras Mdwca
Tres Piedras 		350 0 0
Rio Lucio Mdwca
Penasco 		342 1 0
Lower Des Montes Mdwca
Arroyo Hondo 		319 4 0
Costilla Mdwca
Costilla 		244 5 3
Cerro Regional Mdwca/swa
Cerro 		232 1 0
EL Salto Mdwca and SA
Arroyo Seco 		232 3 0
Ojo Caliente Mdwca
Ojo Caliente 		226 2 1
Upper Des Montes Mdwca
Des Montes 		222 1 0
Upper Ranchitos Mdwcasw
Taos 		222 3 0
Duranes Y Gavilan Mdwca
Ojo Caliente 		215 6 0
Canon Mdwca
Canon 		200 4 3
Upper Arroyo Hondo Mdwca
Arroyo Hondo 		195 4 2
Lower Arroyo Hondo Mdwca
Arroyo Hondo 		180 0 0
San Cristobal Mdwca
San Cristobal 		165 1 0
Enchanted Mobile Home Park
Taos 		150 4 0
Trampas Mdwca
Trampas 		132 3 0
Rodarte Mdwca
Rodarte 		115 2 0
West Rim Mdwua
Taos 		113 3 0
Vadito Mdwca
Vadito 		111 3 2
Vigils Trailer Park
Taos 		105 1 0
Valdez Mdwca
Valdez 		100 3 0
LA Lomita Trailer Park
Taos 		97 1 0
Sanchez Mobile Home Park
El Prado 		80 4 4
EL Rancho MHP Taos
El Prado 		72 3 1
Las Haciendas Homeowners Wua
Taos 		72 0 0
Las Colonias MHP
El Prado 		49 3 0
EL Valle de los Ranchos W & SD
Ranchos De Taos 		48 0 0
LA Lama Mdwca
Questa 		45 2 0
Eagle Rock Village
Questa 		35 5 3
Bmg Trailer Park
Ranchos De Taos 		30 5 2
Non-community systems (52: schools, campgrounds, workplaces, restaurants)

These systems serve places people visit rather than homes.

SystemServesStatusRules violated, 3 yrUnresolved
Mesa Vista Consolidated Schools
Ojo Caliente 		400 3 0
Ranchos Elementary School
Ranchos De Taos 		390 2 0
Martinez Plaza
Taos 		330 0 0
Chevron Mining INC Questa Mine
Questa 		300 0 0
Taos County Economic Development Center
Taos 		300 0 0
Taos Spa and Tennis Club
Taos 		300 1 0
Sipapu Lodge and Cafe
Vadito 		250 0 0
Ojo Caliente Mineral Springs
Ojo Caliente 		200 4 1
Fort Burgwin Research Center
Ranchos De Taos 		138 0 0
Agua Piedra Camp Ground Usfs Carson
 124 0 0
Rio Grande Gorge Visitor Center (blm)
Pilar 		109 1 0
Arroyos del Norte Elementary School
Arroyo Seco 		100 4 1
Baskin Robbins Taos
Taos 		100 1 1
EL Pueblo Lodge
Taos 		100 0 0
Rio Grande Ace Hardware
Taos 		100 3 0
Subway
Taos 		100 1 0
Tall Pines Resort
Red River 		100 1 1
Taos Country Club
Ranchos De Taos 		100 0 0
Taos Mesa Brewing
 100 0 0
Tres Ritos Boy Scout Camp
 100 1 0
Whistle Stop
Taos Ski Valley 		100 1 0
Anansi Charter School
El Prado 		95 1 0
Medley
El Prado 		80 1 0
Predock Condominiums
Taos Ski Valley 		75 1 0
Rio Valley Enterprises
Taos 		65 1 1
Santa Barbara Campground Usfs Carson
Penasco 		62 1 0
Austing Haus
Taos Ski Valley 		60 1 0
Taos RV Park
Taos 		60 0 0
Taos Motel
Ranchos De Taos 		57 1 0
Fawn Lakes and Elephant Rock CG Usfs
Red River 		55 0 0
Guadalajara South
Taos 		50 2 1
Junebug Campground Usfs
50 1 0
Pizanos Restaurant
El Prado 		50 1 1
Ski Tip Restaurant
Red River 		50 1 0
Taos East Condominiums
Taos 		50 1 1
Wild Rivers Headquarters (blm)
Cerro 		48 2 0
Casa Valdez
Taos 		45 1 1
Rio Bravo Campground (blm)
Pilar 		42 1 0
Columbine Campground Usfs Carson
Questa 		40 1 0
Taos Valley RV Park
Taos 		40 1 0
Pilar Campground (blm)
Pilar 		38 2 0
LA Fonda Hotel
Taos 		37 0 0
Columbine Inn
Taos Ski Valley 		30 0 0
Imerys Perlite
Tres Piedras 		30 2 0
Quail Ridge
El Prado 		30 0 0
LA Vida Feliz Condo Association
El Prado 		26 0 0
FA Yun Prajna Monastery
Vadito 		25 0 0
Lama Foundation
San Cristobal 		25 2 0
Monte Bello RV Park
El Prado 		25 0 0
Rio Grande Gorge Rest Area
Taos 		25 1 0
Taos Inn
Taos 		25 0 0
Taos Tennis Ranch, LLC
Taos 		25 0 0
Inactive systems (88, 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.