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ZOAR

PWS ID: 055295509 · KESHENA, 05 54135

ZOAR serves 100 people in KESHENA, 05 using Groundwater water sources. It has 57 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: ZOAR

ZOAR is a native american-owned community water system that delivers drinking water to 100 residents in KESHENA, 05 through 28 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 57 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 53 monitoring and reporting violations are on file. The most recent violation on record dates to 2019.

The most frequently cited contaminant at this system is Lead and Copper Rule, recorded in 5 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 05, EPA tracks 113 public water systems serving 144,290 people, with 19,546 cumulative violations and 443 health-based violations on record. About 95% of systems in the state carry at least one violation, and state-wide the average per system is 173 violations. ZOAR's 57 violations sit below the 05 average. Statewide, 5 of 13 UCMR5-tested systems have reported PFAS detections (38.5%). 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
100
Total Violations
57
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Native American
Connections
28
School/Daycare
No
MCL Violations
0
Monitoring Violations
53
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Lead and Copper Rule MR 5 2018
Chlorine MR 4 2019
Revised Total Coliform Rule RPT 4 2019
p-Dichlorobenzene MR 2 2014
Vinyl chloride MR 2 2014
1,1-Dichloroethylene MR 2 2014
1,2-Dichloroethane MR 2 2014
1,1,1-Trichloroethane MR 2 2014
Trichloroethylene MR 2 2014
Coliform (TCR) MR 2 2015
Tetrachloroethylene MR 2 2014
1,1,2-Trichloroethane MR 2 2014
Toluene MR 2 2014
Ethylbenzene MR 2 2014
1,2,4-Trichlorobenzene MR 2 2014
Xylenes, Total MR 2 2014
o-Dichlorobenzene MR 2 2014
DICHLOROMETHANE MR 2 2014
1,2-Dichloropropane MR 2 2014
CHLOROBENZENE MR 2 2014
Carbon tetrachloride MR 2 2014
trans-1,2-Dichloroethylene MR 2 2014
Styrene MR 2 2014
Benzene MR 2 2014
cis-1,2-Dichloroethylene MR 2 2014

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 ZOAR.

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 055295509 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

05 Drinking Water Authority

05'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 05 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
2019 Chlorine MR 4 SDWIS / 055295509 / 0999
2019 Revised Total Coliform Rule RPT 4 SDWIS / 055295509 / 8000
2018 Lead and Copper Rule MR 5 SDWIS / 055295509 / 5000
2015 Coliform (TCR) MR 2 SDWIS / 055295509 / 3100
2014 p-Dichlorobenzene MR 2 SDWIS / 055295509 / 2969
2014 Vinyl chloride MR 2 SDWIS / 055295509 / 2976
2014 1,1-Dichloroethylene MR 2 SDWIS / 055295509 / 2977
2014 1,2-Dichloroethane MR 2 SDWIS / 055295509 / 2980
2014 1,1,1-Trichloroethane MR 2 SDWIS / 055295509 / 2981
2014 Trichloroethylene MR 2 SDWIS / 055295509 / 2984
2014 Tetrachloroethylene MR 2 SDWIS / 055295509 / 2987
2014 1,1,2-Trichloroethane MR 2 SDWIS / 055295509 / 2985
2014 Toluene MR 2 SDWIS / 055295509 / 2991
2014 Ethylbenzene MR 2 SDWIS / 055295509 / 2992
2014 1,2,4-Trichlorobenzene MR 2 SDWIS / 055295509 / 2378

How ZOAR Compares

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

Metric ZOAR 05 avg Federal benchmark
Total violations 57 173 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 3.9 Indicates a contaminant exceeded a federal MCL
PFAS detection None 38.5% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 100 1,277 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 113 regulated public water systems in 05.

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
Nitrate (as N) 10 mg/L Acute health risk for infants

Frequently Asked Questions

Is ZOAR water safe to drink? ▼
ZOAR (PWS ID: 055295509) has 57 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 100 people using Groundwater sources.
How many people does ZOAR serve? ▼
ZOAR serves 100 people in KESHENA, 05. It is a Native American-owned system using Groundwater water sources with 28 service connections.
What type of violations does ZOAR have? ▼
ZOAR has 57 total violations: 0 health-based violations (MCL exceedances or treatment failures), 53 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in ZOAR water? ▼
No PFAS testing data is available for ZOAR under the EPA's UCMR5 monitoring program.
What water source does ZOAR use? ▼
ZOAR 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.

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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.

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Data sourced from $official public datasets. See our methodology for details. Retrieved and formatted by PlainWater Editorial