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States → Navajo Nation

Community Water System · PWS NN0403008

Moenave Community

Fort Defiance, Navajo Nation 86504 - drinking water served from groundwater sources to 65 people, tracked in EPA SDWIS and UCMR5.

65
People served
165
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 165 drinking-water violations at Moenave Community - below the Navajo Nation per-system average.

165
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
65
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Moenave Community

Moenave Community is a native american-owned community water system that delivers drinking water to 65 residents in Fort Defiance, Navajo Nation through 14 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 165 total violations for this system , of which 0 (0%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 124 monitoring and reporting violations are on file. The most recent violation on record dates to 2025.

The most frequently cited contaminant at this system is Nitrate, recorded in 12 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

Across Navajo Nation, EPA tracks 170 public water systems serving 167,275 people, with 29,535 cumulative violations and 1,366 health-based violations on record. About 100% of systems in the state carry at least one violation, and state-wide the average per system is 173.7 violations. Statewide, 13 of 13 UCMR5-tested systems have reported PFAS detections (100%).

Moenave Community's 165 violations sit below the Navajo Nation average.

All figures above are sourced directly from EPA SDWIS and UCMR5 public data releases and are updated as EPA publishes new reporting cycles.

Population Served
65
Total Violations
165
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
14
School/Daycare
No
MCL Violations
0
Monitoring Violations
124
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Nitrate MR 12 2020
Coliform (TCR) MR 11 2016
Revised Total Coliform Rule RPT 11 2025
Consumer Confidence Rule Other 10 2022
Total Haloacetic Acids (HAA5) MR 8 2018
TTHM MR 8 2018
CYANIDE MR 3 2014
Beryllium, Total MR 3 2014
Antimony, Total MR 3 2011
Arsenic MR 2 2011
Barium MR 2 2011
Cadmium MR 2 2011
Chromium MR 2 2011
Mercury MR 2 2011
Selenium MR 2 2011
Total Polychlorinated Biphenyls (PCB) MR 2 2014
Xylenes, Total MR 2 2014
Lead and Copper Rule MR 2 2014
Thallium, Total MR 2 2011
Fluoride MR 2 2008
Methoxychlor MR 1 2014
Toxaphene MR 1 2014
Dalapon MR 1 2014
Diquat MR 1 2014
Endothall MR 1 2014
Glyphosate MR 1 2014
Di(2-ethylhexyl) adipate MR 1 2014
OXAMYL MR 1 2014
Simazine MR 1 2014
Picloram MR 1 2014

Verify This Water System

The figures above are aggregated from EPA's public databases. To verify the underlying records, or to file a complaint, request a Consumer Confidence Report, or check current monitoring status, go directly to the federal and state regulators that enforce the Safe Drinking Water Act for Moenave Community.

Federal Source of Truth

EPA SDWIS, Federal Reports

EPA's Safe Drinking Water Information System (SDWIS) holds the federal compliance record for every regulated public water system. Open the system-level report by PWS ID:

View PWS ID NN0403008 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Navajo Nation Drinking Water Authority

Navajo Nation's primacy agency administers the Safe Drinking Water Act locally. Search EPA SDWIS for the current state contact, or use the state's public health or environment department portal.

Find NN regulator via EPA SDWIS

Violation Timeline

Each row links to the EPA SDWIS public record for verification. Cross-reference the contaminant code on EPA's federal report to see violation dates, return-to-compliance status, and enforcement actions.

Year (latest) Contaminant Category Count EPA Record
2025 Revised Total Coliform Rule RPT 11 SDWIS / NN0403008 / 8000
2022 Consumer Confidence Rule Other 10 SDWIS / NN0403008 / 7000
2020 Nitrate MR 12 SDWIS / NN0403008 / 1040
2018 Total Haloacetic Acids (HAA5) MR 8 SDWIS / NN0403008 / 2456
2018 TTHM MR 8 SDWIS / NN0403008 / 2950
2016 Coliform (TCR) MR 11 SDWIS / NN0403008 / 3100
2014 CYANIDE MR 3 SDWIS / NN0403008 / 1024
2014 Beryllium, Total MR 3 SDWIS / NN0403008 / 1075
2014 Total Polychlorinated Biphenyls (PCB) MR 2 SDWIS / NN0403008 / 2383
2014 Xylenes, Total MR 2 SDWIS / NN0403008 / 2955
2014 Lead and Copper Rule MR 2 SDWIS / NN0403008 / 5000
2014 Methoxychlor MR 1 SDWIS / NN0403008 / 2015
2014 Toxaphene MR 1 SDWIS / NN0403008 / 2020
2014 Dalapon MR 1 SDWIS / NN0403008 / 2031
2014 Diquat MR 1 SDWIS / NN0403008 / 2032

How Moenave Community Compares

Cross-reference this system's record against state averages and the federal MCL framework for context.

Metric Moenave Community Navajo Nation avg Federal benchmark
Total violations 165 173.7 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 8 Indicates a contaminant exceeded a federal MCL
PFAS detection None 100% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 65 984 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 170 regulated public water systems in Navajo Nation.

Federal MCL reference, Safe Drinking Water Act thresholds ▼
Contaminant Federal MCL / Action Level Note
Lead 0 mg/L (Action Level: 0.015 mg/L) Lead and Copper Rule treatment technique
Arsenic 0.010 mg/L (10 ppb) Health-based MCL since 2006
Total Coliform Treatment technique (RTCR) Indicator organism, monitoring trigger
PFOA / PFOS (PFAS) 4.0 ppt each (final 2024 rule) Compliance deadline 2029 (EPA proposed extending to 2031, not yet final as of May 2026)
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is Moenave Community water safe to drink? ▼
Moenave Community (PWS ID: NN0403008) has 165 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 65 people using Groundwater sources.
How many people does Moenave Community serve? ▼
Moenave Community serves 65 people in Fort Defiance, Navajo Nation. It is a Native American-owned system using Groundwater water sources with 14 service connections.
What type of violations does Moenave Community have? ▼
Moenave Community has 165 total violations: 0 health-based violations (MCL exceedances or treatment failures), 124 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Moenave Community water? ▼
No PFAS testing data is available for Moenave Community under the EPA's UCMR5 monitoring program.
What water source does Moenave Community use? ▼
Moenave Community uses Groundwater as its primary water source. It is classified as a Community Water System (CWS), serving residential populations year-round.
Where does this data come from? ▼
All data comes from the EPA Safe Drinking Water Information System (SDWIS) and the UCMR5 PFAS monitoring program. SDWIS tracks compliance for all public water systems regulated under the Safe Drinking Water Act.
Data Sources: EPA Safe Drinking Water Information System (SDWIS), Q4 2025. This data is provided for informational purposes only.

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 system's figures are rendered directly from 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.