PlainWater
Counties → New Mexico

San Juan County, New Mexico

Water Systems
22
Population Served
103,721
Total Violations
5,118
1,418 health-based
PFAS Detected
8
of 8 tested

Violation Analysis

100.0%
Systems with Violations
232.6
Avg Violations per System
27.7%
Health-Based Violations

Water Source Types

SW
19 systems (86%)
GW
3 systems (14%)

PFAS Contamination

8
Systems Tested
8
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

San Juan New Mexico water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (22)

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
Farmington Water System 47,655 37 Clean
Aztec Domestic Water System 9,673 83 Clean
Bloomfield Water Supply System 9,536 256 Clean
Lee Hammond Water 8,817 91 Clean
Lower Valley Water Users Association 7,615 69 Clean
Morningstar Water System 5,694 481 Clean
Northstar Mdwca 3,784 112 Clean
Flora Vista Mutual Domestic 3,726 112 Clean
Upper la Plata Water Users Association 2,265 25 -
Southside Mutual Domestic Water 1,609 55 -
Blanco Mdwca 1,148 382 -
Navajo Dam Domestic Water Consumers Inc 545 355 -
Apple Orchard Mdwca 460 584 -
Chaco Culture National Historic Park 250 383 -
Navajo Lake State Park - Pine Site 250 123 -
Rosa Joint Ventures Water System 239 326 -
La Vida Mission Community Water Supply 200 257 -
Navajo Lake State Park - Cottonwood Camp 158 72 -
Pine River Mdca 44 1,207 -
Enterprise Products Company Chaco Plant 28 53 -
Hydro Pure Technology Inc. 25 47 -
Ngwsp Cutter Lateral 0 8 -

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
Otero County
55 systems · 71,033 served · 7,026 violations
Eddy County
28 systems · 67,422 served · 3,187 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in San Juan County? ▼
San Juan County has 5,118 total drinking water violations across 22 water systems, of which 1,418 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from San Juan County systems? ▼
Water systems in San Juan County serve approximately 103,721 people through 22 public water systems.
Has PFAS been detected in San Juan County water? ▼
Of 8 water systems tested for PFAS in San Juan County, 8 had PFAS detected (100.0% detection rate).
What types of water sources supply San Juan County? ▼
Water systems in San Juan County use SW (19 systems), GW (3 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. 27.7% of San Juan 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.