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States → EPA Region 6 — Tribal Water Systems

Community Water System · PWS 063501001

Acoma Main

Acoma, EPA Region 6 — Tribal Water Systems 87034 - drinking water served from groundwater sources to 2,374 people, tracked in EPA SDWIS and UCMR5.

2,374
People served
125
EPA violations
19
Health-based
Untested
UCMR5 result

The verdict

EPA records 125 drinking-water violations at Acoma Main, 15% of them health-based.

125
Total EPA violations on record
15%
Health-based (MCL / treatment failure)
2,374
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Acoma Main

Acoma Main is a native american-owned community water system that delivers drinking water to 2,374 residents in Acoma, EPA Region 6 — Tribal Water Systems through 741 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 125 total violations for this system , of which 19 (15%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 99 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 18 violations (MR). This system has not yet been sampled under EPA's UCMR5 PFAS monitoring program, so no PFAS detection data is available here.

EPA Region 6 — Tribal Water Systems has thousands of regulated public water systems tracked by EPA under the Safe Drinking Water Act.

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
2,374
Total Violations
125
Health-Based Violations
19
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
741
School/Daycare
No
MCL Violations
14
Monitoring Violations
99
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 18 2012
Nitrate-Nitrite MR 12 2018
Coliform (TCR) MCL 7 2000
Gross Alpha, Excl. Radon and U MCL 7 2025
Combined Radium (-226 and -228) MR 6 2025
TTHM MR 6 2019
Combined Uranium MR 6 2025
Total Haloacetic Acids (HAA5) MR 6 2019
Gross Alpha, Excl. Radon and U MR 6 2025
Consumer Confidence Rule Other 5 2004
Groundwater Rule TT 5 2017
Arsenic MR 3 2018
Cadmium MR 3 2018
Fluoride MR 3 2018
Antimony, Total MR 3 2018
Beryllium, Total MR 3 2018
Revised Total Coliform Rule MON 3 2018
Chromium MR 3 2018
Nickel MR 3 2018
Mercury MR 3 2018
Barium MR 3 2018
CYANIDE MR 3 2018
Selenium MR 3 2018
Thallium, Total MR 3 2018

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 Acoma Main.

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 063501001 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 6 — Tribal Water Systems Drinking Water Authority

EPA Region 6 — Tribal Water Systems'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 06 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 Gross Alpha, Excl. Radon and U MCL 7 SDWIS / 063501001 / 4000
2025 Combined Radium (-226 and -228) MR 6 SDWIS / 063501001 / 4010
2025 Combined Uranium MR 6 SDWIS / 063501001 / 4006
2025 Gross Alpha, Excl. Radon and U MR 6 SDWIS / 063501001 / 4000
2019 TTHM MR 6 SDWIS / 063501001 / 2950
2019 Total Haloacetic Acids (HAA5) MR 6 SDWIS / 063501001 / 2456
2018 Nitrate-Nitrite MR 12 SDWIS / 063501001 / 1038
2018 Arsenic MR 3 SDWIS / 063501001 / 1005
2018 Cadmium MR 3 SDWIS / 063501001 / 1015
2018 Fluoride MR 3 SDWIS / 063501001 / 1025
2018 Antimony, Total MR 3 SDWIS / 063501001 / 1074
2018 Beryllium, Total MR 3 SDWIS / 063501001 / 1075
2018 Revised Total Coliform Rule MON 3 SDWIS / 063501001 / 8000
2018 Chromium MR 3 SDWIS / 063501001 / 1020
2018 Nickel MR 3 SDWIS / 063501001 / 1036

How Acoma Main Compares

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

Metric Acoma Main EPA Region 6 — Tribal Water Systems avg Federal benchmark
Total violations 125 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 19 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 2,374 - Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across all regulated public water systems in EPA Region 6 — Tribal Water Systems.

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 Acoma Main water safe to drink? ▼
Acoma Main (PWS ID: 063501001) has 125 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 2,374 people using Groundwater sources.
How many people does Acoma Main serve? ▼
Acoma Main serves 2,374 people in Acoma, EPA Region 6 — Tribal Water Systems. It is a Native American-owned system using Groundwater water sources with 741 service connections.
What type of violations does Acoma Main have? ▼
Acoma Main has 125 total violations: 19 health-based violations (MCL exceedances or treatment failures), 99 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Acoma Main water? ▼
No PFAS testing data is available for Acoma Main under the EPA's UCMR5 monitoring program.
What water source does Acoma Main use? ▼
Acoma Main 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.