PlainWater
Counties → New Mexico

Rio Arriba County, New Mexico

Water Systems
63
Population Served
29,347
Total Violations
14,535
3,449 health-based
PFAS Detected
2
of 2 tested

Violation Analysis

98.4%
Systems with Violations
230.7
Avg Violations per System
23.7%
Health-Based Violations

Water Source Types

GW
43 systems (68%)
SW
7 systems (11%)

PFAS Contamination

2
Systems Tested
2
PFAS Detected
100.0%
Detection Rate

PFAS (per- and polyfluoroalkyl substances) are persistent chemicals found in drinking water. The EPA has set enforceable limits for several PFAS compounds under UCMR5 monitoring.

Compliance Snapshot

Rio Arriba New Mexico water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (50)

Violation history is cumulative, many flagged systems have already returned to compliance. Detail pages show per-system context.

Water Systems

System Name Population Violations PFAS
Espanola Water System 12,012 694 Clean
Chama Water System 1,573 425 -
Agua Sana Wua 1,514 446 -
El Rito Regional Water & Waste Water Asn 1,200 63 -
Greater Chimayo Mdwca 1,050 73 -
Alcalde Mdwca 927 215 -
Chamita Mdwca 902 183 -
Truchas Mdwca 629 140 -
Velarde Mdwca 543 80 -
Dixon Mdwca 500 81 -
Tierra Amarilla Mdwca 470 199 -
Canjilon Water System 469 139 -
Abiquiu Mdwca 420 529 -
Brazos Mdwca 360 116 -
Bpoe 1747 Recreation Area 357 122 -
Cebolla Mdwca 350 483 -
Cordova Mdwca 325 264 -
Ensenada Mdwca 300 208 -
El Rito Canyon Mdwca 300 328 -
Coronado High School 263 143 -
Chimayo Elementary School 250 86 -
Los Ojos Mdwca 237 373 -
Ojo Sarco Mdwca 225 107 -
Escalante High School 225 106 -
Lumberton Mdwca 223 1,277 -
Capulin Mdwca 215 467 -
Echo Amphitheater Usfs Carson 205 38 -
Valley Estates Water & Sewer Association 194 539 -
Abiquiu Inn 191 103 -
Lybrook Mdwca 175 231 -
Rio Embudo Mdwca 159 335 -
Canones Mdwca 150 269 -
Ghost Ranch Conference Center 150 119 -
Heron Lake State Park (Surface Water) 150 140 -
Apodaca Mdwca 129 52 -
Rio Arriba County Detention Center 128 57 -
Abiquiu Elementary School 125 100 -
La Madera Mdwca 124 242 Clean
Navajo Lake State Park - Sims Mesa 110 113 -
Abiquiu Dam 100 34 -
El Vado Lake State Park 100 151 -
Gallina Water System 99 327 -
Barranco Mdwca 97 514 -
Rutheron Mutual Water Association 90 234 -
Chama West Water Users Association 90 54 -
Lindrith Community Water Coop Inc 85 158 -
Vallecitos Mdwca 84 553 -
Delancey Street Foundation 83 232 -
Coyote Mdwca 77 229 -
McCurdy School 62 181 -

Other Counties in New Mexico

Bernalillo County
82 systems · 651,858 served · 15,222 violations
Dona Ana County
68 systems · 251,275 served · 7,336 violations
Santa Fe County
84 systems · 146,927 served · 11,238 violations
Sandoval County
62 systems · 135,220 served · 12,440 violations
San Juan County
22 systems · 103,721 served · 5,118 violations
Otero County
55 systems · 71,033 served · 7,026 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in Rio Arriba County? ▼
Rio Arriba County has 14,535 total drinking water violations across 63 water systems, of which 3,449 are health-based violations. 98.4% of systems have at least one violation.
How many people get water from Rio Arriba County systems? ▼
Water systems in Rio Arriba County serve approximately 29,347 people through 63 public water systems.
Has PFAS been detected in Rio Arriba County water? ▼
Of 2 water systems tested for PFAS in Rio Arriba County, 2 had PFAS detected (100.0% detection rate).
What types of water sources supply Rio Arriba County? ▼
Water systems in Rio Arriba County use GW (43 systems), SW (7 systems) as their primary water sources.
Are health-based violations serious? ▼
Health-based violations indicate that drinking water exceeded Maximum Contaminant Levels (MCLs) set by the EPA or failed treatment technique requirements. 23.7% of Rio Arriba County's violations are health-based. Not all violations indicate immediate health risk, but they require corrective action.
Data Sources & Methodology

Drinking water violation data from the EPA Safe Drinking Water Information System (SDWIS). PFAS testing data from the UCMR5 monitoring program. SDWIS tracks all public water systems regulated under the Safe Drinking Water Act.

Violations are categorized as health-based (Maximum Contaminant Level exceedances, treatment technique failures) or monitoring/reporting violations. Not all violations indicate an immediate health risk.

Read our methodology - how this data is sourced, computed, and verified.

Data sourced from EPA SDWIS and UCMR5 PFAS monitoring data. See our methodology for details. Retrieved and formatted by PlainWater Editorial

Every figure on PlainWater is rendered directly from EPA SDWIS drinking-water data, no number is typed in by an editor. This page draws directly on EPA SDWIS data, no figure is typed in by an editor. See our editorial standards & corrections policy, the methodology behind these numbers, or report a data error.