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Community Water System · PWS NN0433007

Kaibeto (Upper) Boarding School BIA

Kaibeto, Navajo Nation 86053 - drinking water served from groundwater sources to 400 people, tracked in EPA SDWIS and UCMR5.

400
People served
250
EPA violations
0
Health-based
Untested
UCMR5 result

The verdict

EPA records 250 drinking-water violations at Kaibeto (Upper) Boarding School BIA - above the Navajo Nation per-system average.

250
Total EPA violations on record
0%
Health-based (MCL / treatment failure)
400
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Kaibeto (Upper) Boarding School BIA

Kaibeto (Upper) Boarding School BIA is a federal-owned community water system that delivers drinking water to 400 residents in Kaibeto, Navajo Nation through 47 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 250 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 230 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 2,3,7,8-TCDD, recorded in 7 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%).

Kaibeto (Upper) Boarding School BIA's 250 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
400
Total Violations
250
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Federal
Connections
47
School/Daycare
Yes
MCL Violations
0
Monitoring Violations
230
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
2,3,7,8-TCDD MR 7 2008
BHC-GAMMA MR 4 2008
Methoxychlor MR 4 2008
Toxaphene MR 4 2008
Dalapon MR 4 2008
Endothall MR 4 2008
Glyphosate MR 4 2008
Di(2-ethylhexyl) adipate MR 4 2008
OXAMYL MR 4 2008
Simazine MR 4 2008
Picloram MR 4 2008
Dinoseb MR 4 2008
Hexachlorocyclopentadiene MR 4 2008
Carbofuran MR 4 2008
Atrazine MR 4 2008
LASSO MR 4 2008
Heptachlor MR 4 2008
Heptachlor epoxide MR 4 2008
2,4,5-TP MR 4 2008
Benzo(a)pyrene MR 4 2008
Pentachlorophenol MR 4 2008
Total Polychlorinated Biphenyls (PCB) MR 4 2008
1,2,4-Trichlorobenzene MR 4 2008
cis-1,2-Dichloroethylene MR 4 2008
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2008
ETHYLENE DIBROMIDE MR 4 2008
Xylenes, Total MR 4 2008
DICHLOROMETHANE MR 4 2008
o-Dichlorobenzene MR 4 2008
p-Dichlorobenzene MR 4 2008

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 Kaibeto (Upper) Boarding School BIA.

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 NN0433007 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
2024 Revised Total Coliform Rule RPT 4 SDWIS / NN0433007 / 8000
2024 Nitrite MR 1 SDWIS / NN0433007 / 1041
2024 Nitrate MR 1 SDWIS / NN0433007 / 1040
2016 Revised Total Coliform Rule Other 3 SDWIS / NN0433007 / 8000
2013 Stage 2 Disinfectants and Disinfection Byproducts Rule MR 3 SDWIS / NN0433007 / 0600
2012 Coliform (TCR) MR 2 SDWIS / NN0433007 / 3100
2010 Total Haloacetic Acids (HAA5) MR 1 SDWIS / NN0433007 / 2456
2010 TTHM MR 1 SDWIS / NN0433007 / 2950
2008 2,3,7,8-TCDD MR 7 SDWIS / NN0433007 / 2063
2008 BHC-GAMMA MR 4 SDWIS / NN0433007 / 2010
2008 Methoxychlor MR 4 SDWIS / NN0433007 / 2015
2008 Toxaphene MR 4 SDWIS / NN0433007 / 2020
2008 Dalapon MR 4 SDWIS / NN0433007 / 2031
2008 Endothall MR 4 SDWIS / NN0433007 / 2033
2008 Glyphosate MR 4 SDWIS / NN0433007 / 2034

How Kaibeto (Upper) Boarding School BIA Compares

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

Metric Kaibeto (Upper) Boarding School BIA Navajo Nation avg Federal benchmark
Total violations 250 173.7 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 400 984 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 Kaibeto (Upper) Boarding School BIA water safe to drink? ▼
Kaibeto (Upper) Boarding School BIA (PWS ID: NN0433007) has 250 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 400 people using Groundwater sources.
How many people does Kaibeto (Upper) Boarding School BIA serve? ▼
Kaibeto (Upper) Boarding School BIA serves 400 people in Kaibeto, Navajo Nation. It is a Federal-owned system using Groundwater water sources with 47 service connections.
What type of violations does Kaibeto (Upper) Boarding School BIA have? ▼
Kaibeto (Upper) Boarding School BIA has 250 total violations: 0 health-based violations (MCL exceedances or treatment failures), 230 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Kaibeto (Upper) Boarding School BIA water? ▼
No PFAS testing data is available for Kaibeto (Upper) Boarding School BIA under the EPA's UCMR5 monitoring program.
What water source does Kaibeto (Upper) Boarding School BIA use? ▼
Kaibeto (Upper) Boarding School BIA 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.