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Counties → Navajo Nation

County NN037 County, Navajo Nation

Water Systems
13
Population Served
6,907
Total Violations
2,385
242 health-based
PFAS Detected
0
of 0 tested

Violation Analysis

100.0%
Systems with Violations
183.5
Avg Violations per System
10.1%
Health-Based Violations

Water Source Types

GW
10 systems (77%)
SW
3 systems (23%)

Compliance Snapshot

County NN037 Navajo Nation water systems by violation status, EPA SDWIS records.

No violations on record (0) One or more violations (13)

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
Aneth NTUA 1,481 196 -
Oljato NTUA 1,276 49 -
Red Mesa NTUA 1,023 108 -
Monument Valley Utah Schools 700 303 -
Montezuma Creek NTUA 424 130 -
Monument Valley Mission - Hospital 303 578 -
Todahaidekani NTUA 301 140 -
Gouldings Trading Post and Lodge 300 432 -
Mexican Water NTUA 294 141 -
Mexican Hat NTUA 239 34 -
Casa Del Eco Mesa NTUA 211 139 -
Aneth Community School BIA 192 47 -
Navajo Mountain Community Boarding School BIA 163 88 -

Other Counties in Navajo Nation

County NN001 County
51 systems · 55,505 served · 9,921 violations
County NN031 County
29 systems · 27,501 served · 3,615 violations
County NN017 County
27 systems · 26,234 served · 4,391 violations
County NN045 County
19 systems · 25,958 served · 2,250 violations
County NN005 County
22 systems · 20,758 served · 1,970 violations
County NN006 County
4 systems · 1,681 served · 2,483 violations

Drinking Water Guides

Frequently Asked Questions

How many water violations are in County NN037 County? ▼
County NN037 County has 2,385 total drinking water violations across 13 water systems, of which 242 are health-based violations. 100.0% of systems have at least one violation.
How many people get water from County NN037 County systems? ▼
Water systems in County NN037 County serve approximately 6,907 people through 13 public water systems.
Has PFAS been detected in County NN037 County water? ▼
No PFAS testing data is available for water systems in County NN037 County.
What types of water sources supply County NN037 County? ▼
Water systems in County NN037 County use GW (10 systems), SW (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. 10.1% of County NN037 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.