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States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 090400054

BIA Keams Canyon

Keams Canyon, EPA Region 9 — Tribal Water Systems 86034 - drinking water served from groundwater sources to 925 people, tracked in EPA SDWIS and UCMR5.

925
People served
297
EPA violations
63
Health-based
Untested
UCMR5 result

The verdict

EPA records 297 drinking-water violations at BIA Keams Canyon, 21% of them health-based.

297
Total EPA violations on record
21%
Health-based (MCL / treatment failure)
925
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: BIA Keams Canyon

BIA Keams Canyon is a federal-owned community water system that delivers drinking water to 925 residents in Keams Canyon, EPA Region 9 — Tribal Water Systems through 202 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 297 total violations for this system , of which 63 (21%) are health-based, meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 173 monitoring and reporting violations are on file. The most recent violation on record dates to 2024.

The most frequently cited contaminant at this system is Coliform (TCR), recorded in 59 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 9 — 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
925
Total Violations
297
Health-Based Violations
63
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Federal
Connections
202
School/Daycare
No
MCL Violations
58
Monitoring Violations
173
Treatment Tech Violations
5

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MR 59 2010
Arsenic MCL 53 2012
Arsenic MR 23 2011
Nitrate MR 6 2009
Coliform (TCR) MCL 5 2010
TTHM MR 5 2010
Consumer Confidence Rule Other 5 2005
Lead and Copper Rule MR 4 2016
LEAD AND COPPER RULE REVISIONS TT 4 2024
2,3,7,8-TCDD MR 3 2008
Total Haloacetic Acids (HAA5) MR 3 2008
Toxaphene MR 2 2008
Diquat MR 2 2008
Endothall MR 2 2008
Carbofuran MR 2 2008
Chlordane MR 2 2008
E. COLI MR 2 2010
OXAMYL MR 2 2008
Total Polychlorinated Biphenyls (PCB) MR 2 2008
Barium MR 1 2001
Mercury MR 1 2001
Antimony, Total MR 1 2001
Methoxychlor MR 1 2001
Endrin MR 1 2001
Dalapon MR 1 2001
Di(2-ethylhexyl) adipate MR 1 2001
Glyphosate MR 1 2001
Simazine MR 1 2001
Picloram MR 1 2001
Hexachlorocyclopentadiene MR 1 2001

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 BIA Keams Canyon.

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 090400054 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

EPA Region 9 — Tribal Water Systems Drinking Water Authority

EPA Region 9 — 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 09 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
2024 LEAD AND COPPER RULE REVISIONS TT 4 SDWIS / 090400054 / 5200
2019 Groundwater Rule TT 1 SDWIS / 090400054 / 0700
2016 Lead and Copper Rule MR 4 SDWIS / 090400054 / 5000
2012 Arsenic MCL 53 SDWIS / 090400054 / 1005
2011 Arsenic MR 23 SDWIS / 090400054 / 1005
2010 Coliform (TCR) MR 59 SDWIS / 090400054 / 3100
2010 Coliform (TCR) MCL 5 SDWIS / 090400054 / 3100
2010 TTHM MR 5 SDWIS / 090400054 / 2950
2010 E. COLI MR 2 SDWIS / 090400054 / 3014
2009 Nitrate MR 6 SDWIS / 090400054 / 1040
2008 2,3,7,8-TCDD MR 3 SDWIS / 090400054 / 2063
2008 Total Haloacetic Acids (HAA5) MR 3 SDWIS / 090400054 / 2456
2008 Toxaphene MR 2 SDWIS / 090400054 / 2020
2008 Diquat MR 2 SDWIS / 090400054 / 2032
2008 Endothall MR 2 SDWIS / 090400054 / 2033

How BIA Keams Canyon Compares

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

Metric BIA Keams Canyon EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 297 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 63 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 925 - 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 9 — 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 BIA Keams Canyon water safe to drink? ▼
BIA Keams Canyon (PWS ID: 090400054) has 297 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 925 people using Groundwater sources.
How many people does BIA Keams Canyon serve? ▼
BIA Keams Canyon serves 925 people in Keams Canyon, EPA Region 9 — Tribal Water Systems. It is a Federal-owned system using Groundwater water sources with 202 service connections.
What type of violations does BIA Keams Canyon have? ▼
BIA Keams Canyon has 297 total violations: 63 health-based violations (MCL exceedances or treatment failures), 173 monitoring/reporting violations, and 5 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in BIA Keams Canyon water? ▼
No PFAS testing data is available for BIA Keams Canyon under the EPA's UCMR5 monitoring program.
What water source does BIA Keams Canyon use? ▼
BIA Keams Canyon 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.