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States → Navajo Nation

Community Water System · PWS NN3500329

Alamo-Chavez Springs

Alamo, Navajo Nation 87825 - drinking water served from groundwater sources to 28 people, tracked in EPA SDWIS and UCMR5.

28
People served
599
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 599 drinking-water violations at Alamo-Chavez Springs - above the Navajo Nation per-system average.

599
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
28
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Alamo-Chavez Springs

Alamo-Chavez Springs is a native american-owned community water system that delivers drinking water to 28 residents in Alamo, Navajo Nation through 5 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 599 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 504 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 Coliform (TCR), recorded in 74 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%).

Alamo-Chavez Springs's 599 violations sit above 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
28
Total Violations
599
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
5
School/Daycare
No
MCL Violations
0
Monitoring Violations
504
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 74 2015
Revised Total Coliform Rule MON 71 2025
Consumer Confidence Rule Other 28 2024
Public Notice Other 27 2025
Nitrate MR 22 2020
Nitrite MR 20 2020
Revised Total Coliform Rule RPT 14 2025
Arsenic MR 5 2011
Cadmium MR 5 2011
Chromium MR 5 2011
Mercury MR 5 2011
Selenium MR 5 2011
Antimony, Total MR 5 2011
Beryllium, Total MR 5 2011
Thallium, Total MR 5 2011
Methoxychlor MR 5 2011
Toxaphene MR 5 2011
Diquat MR 5 2011
Endothall MR 5 2011
Glyphosate MR 5 2011
Di(2-ethylhexyl) adipate MR 5 2011
OXAMYL MR 5 2011
Simazine MR 5 2011
Di(2-ethylhexyl) phthalate MR 5 2011
Picloram MR 5 2011
Hexachlorocyclopentadiene MR 5 2011
Carbofuran MR 5 2011
Atrazine MR 5 2011
LASSO MR 5 2011
2,3,7,8-TCDD MR 5 2011

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 Alamo-Chavez Springs.

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 NN3500329 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 MON 71 SDWIS / NN3500329 / 8000
2025 Public Notice Other 27 SDWIS / NN3500329 / 7500
2025 Revised Total Coliform Rule RPT 14 SDWIS / NN3500329 / 8000
2024 Consumer Confidence Rule Other 28 SDWIS / NN3500329 / 7000
2020 Nitrate MR 22 SDWIS / NN3500329 / 1040
2020 Nitrite MR 20 SDWIS / NN3500329 / 1041
2018 E. COLI MR 1 SDWIS / NN3500329 / 3014
2016 Revised Total Coliform Rule Other 2 SDWIS / NN3500329 / 8000
2015 Coliform (TCR) MR 74 SDWIS / NN3500329 / 3100
2011 Arsenic MR 5 SDWIS / NN3500329 / 1005
2011 Cadmium MR 5 SDWIS / NN3500329 / 1015
2011 Chromium MR 5 SDWIS / NN3500329 / 1020
2011 Mercury MR 5 SDWIS / NN3500329 / 1035
2011 Selenium MR 5 SDWIS / NN3500329 / 1045
2011 Antimony, Total MR 5 SDWIS / NN3500329 / 1074

How Alamo-Chavez Springs Compares

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

Metric Alamo-Chavez Springs Navajo Nation avg Federal benchmark
Total violations 599 173.7 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 28 984 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 Alamo-Chavez Springs water safe to drink? ▼
Alamo-Chavez Springs (PWS ID: NN3500329) has 599 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 28 people using Groundwater sources.
How many people does Alamo-Chavez Springs serve? ▼
Alamo-Chavez Springs serves 28 people in Alamo, Navajo Nation. It is a Native American-owned system using Groundwater water sources with 5 service connections.
What type of violations does Alamo-Chavez Springs have? ▼
Alamo-Chavez Springs has 599 total violations: 0 health-based violations (MCL exceedances or treatment failures), 504 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Alamo-Chavez Springs water? ▼
No PFAS testing data is available for Alamo-Chavez Springs under the EPA's UCMR5 monitoring program.
What water source does Alamo-Chavez Springs use? ▼
Alamo-Chavez Springs 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.