PlainWater
States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 093534006

Hanaadli Huerfano Boarding School - BIE

Gallup, EPA Region 9 — Tribal Water Systems 87301 - drinking water served from surface water sources to 123 people, tracked in EPA SDWIS and UCMR5.

123
People served
140
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 140 drinking-water violations at Hanaadli Huerfano Boarding School - BIE.

140
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
123
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Hanaadli Huerfano Boarding School - BIE

Hanaadli Huerfano Boarding School - BIE is a federal-owned community water system that delivers drinking water to 123 residents in Gallup, EPA Region 9 — Tribal Water Systems through 10 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 140 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 130 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 Consumer Confidence Rule, recorded in 6 violations (Other). 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
123
Total Violations
140
Health-Based Violations
0
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Federal
Connections
10
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
130
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Consumer Confidence Rule Other 6 2023
TTHM MR 5 2025
Total Haloacetic Acids (HAA5) MR 4 2025
Dalapon MR 3 2004
OXAMYL MR 3 2004
Dinoseb MR 3 2004
Carbofuran MR 3 2004
2,4-D MR 3 2004
Pentachlorophenol MR 3 2004
Total Polychlorinated Biphenyls (PCB) MR 3 2004
Xylenes, Total MR 3 2004
2,4,5-TP MR 3 2004
Picloram MR 3 2004
Nitrate MR 2 2004
Endrin MR 2 2004
BHC-GAMMA MR 2 2004
Glyphosate MR 2 2004
Di(2-ethylhexyl) adipate MR 2 2004
Di(2-ethylhexyl) phthalate MR 2 2004
LASSO MR 2 2004
Heptachlor MR 2 2004
1,2,4-Trichlorobenzene MR 2 2004
cis-1,2-Dichloroethylene MR 2 2004
1,2-DIBROMO-3-CHLOROPROPANE MR 2 2004
ETHYLENE DIBROMIDE MR 2 2004
DICHLOROMETHANE MR 2 2004
o-Dichlorobenzene MR 2 2004
p-Dichlorobenzene MR 2 2004
1,1,1-Trichloroethane MR 2 2004
Carbon tetrachloride MR 2 2004

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 Hanaadli Huerfano Boarding School - BIE.

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 093534006 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
2025 TTHM MR 5 SDWIS / 093534006 / 2950
2025 Total Haloacetic Acids (HAA5) MR 4 SDWIS / 093534006 / 2456
2024 LEAD AND COPPER RULE REVISIONS RPT 2 SDWIS / 093534006 / 5200
2023 Consumer Confidence Rule Other 6 SDWIS / 093534006 / 7000
2022 Lead and Copper Rule MR 2 SDWIS / 093534006 / 5000
2017 E. COLI MR 2 SDWIS / 093534006 / 3014
2010 Coliform (TCR) MR 2 SDWIS / 093534006 / 3100
2004 Dalapon MR 3 SDWIS / 093534006 / 2031
2004 OXAMYL MR 3 SDWIS / 093534006 / 2036
2004 Dinoseb MR 3 SDWIS / 093534006 / 2041
2004 Carbofuran MR 3 SDWIS / 093534006 / 2046
2004 2,4-D MR 3 SDWIS / 093534006 / 2105
2004 Pentachlorophenol MR 3 SDWIS / 093534006 / 2326
2004 Total Polychlorinated Biphenyls (PCB) MR 3 SDWIS / 093534006 / 2383
2004 Xylenes, Total MR 3 SDWIS / 093534006 / 2955

How Hanaadli Huerfano Boarding School - BIE Compares

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

Metric Hanaadli Huerfano Boarding School - BIE EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 140 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 0 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 123 - 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 Hanaadli Huerfano Boarding School - BIE water safe to drink? ▼
Hanaadli Huerfano Boarding School - BIE (PWS ID: 093534006) has 140 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 123 people using Surface Water sources.
How many people does Hanaadli Huerfano Boarding School - BIE serve? ▼
Hanaadli Huerfano Boarding School - BIE serves 123 people in Gallup, EPA Region 9 — Tribal Water Systems. It is a Federal-owned system using Surface Water water sources with 10 service connections.
What type of violations does Hanaadli Huerfano Boarding School - BIE have? ▼
Hanaadli Huerfano Boarding School - BIE has 140 total violations: 0 health-based violations (MCL exceedances or treatment failures), 130 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Hanaadli Huerfano Boarding School - BIE water? ▼
No PFAS testing data is available for Hanaadli Huerfano Boarding School - BIE under the EPA's UCMR5 monitoring program.
What water source does Hanaadli Huerfano Boarding School - BIE use? ▼
Hanaadli Huerfano Boarding School - BIE uses Surface Water 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.