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States → EPA Region 9 — Tribal Water Systems

Community Water System · PWS 090600161

Yurok - McCoy - Kenek

Klamath, EPA Region 9 — Tribal Water Systems 95548 - drinking water served from surface water sources to 30 people, tracked in EPA SDWIS and UCMR5.

30
People served
117
EPA violations
17
Health-based
Untested
UCMR5 result

The verdict

EPA records 117 drinking-water violations at Yurok - McCoy - Kenek, 15% of them health-based.

117
Total EPA violations on record
15%
Health-based (MCL / treatment failure)
30
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Yurok - McCoy - Kenek

Yurok - McCoy - Kenek is a native american-owned community water system that delivers drinking water to 30 residents in Klamath, EPA Region 9 — Tribal Water Systems through 8 service connections. Its water is drawn from surface water sources. EPA's Safe Drinking Water Information System records 117 total violations for this system , of which 17 (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 Surface Water Treatment Rule, recorded in 35 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
30
Total Violations
117
Health-Based Violations
17
Water Source
Surface Water

System Details

System Type
Community
Owner Type
Native American
Connections
8
School/Daycare
No
MCL Violations
0
Monitoring Violations
99
Treatment Tech Violations
17

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Surface Water Treatment Rule MR 35 2025
Interim Enhanced Surface Water Treatment Rule TT 9 2025
Surface Water Treatment Rule TT 6 2024
Revised Total Coliform Rule MON 5 2023
Nitrate MR 2 2017
Nitrite MR 2 2017
cis-1,2-Dichloroethylene MR 2 2019
Xylenes, Total MR 2 2019
DICHLOROMETHANE MR 2 2019
o-Dichlorobenzene MR 2 2019
p-Dichlorobenzene MR 2 2019
Vinyl chloride MR 2 2019
trans-1,2-Dichloroethylene MR 2 2019
1,2-Dichloroethane MR 2 2019
1,1,1-Trichloroethane MR 2 2019
Carbon tetrachloride MR 2 2019
Trichloroethylene MR 2 2019
Tetrachloroethylene MR 2 2019
CHLOROBENZENE MR 2 2019
Benzene MR 2 2019
Ethylbenzene MR 2 2019
Styrene MR 2 2019
Chlorine MR 2 2023
1,1-Dichloroethylene MR 2 2019
1,2,4-Trichlorobenzene MR 2 2019
Toluene MR 2 2019
1,1,2-Trichloroethane MR 2 2019
Cadmium MR 1 2019
Mercury MR 1 2019
Beryllium, Total MR 1 2019

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 Yurok - McCoy - Kenek.

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 090600161 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 Surface Water Treatment Rule MR 35 SDWIS / 090600161 / 0200
2025 Interim Enhanced Surface Water Treatment Rule TT 9 SDWIS / 090600161 / 0300
2024 Surface Water Treatment Rule TT 6 SDWIS / 090600161 / 0200
2024 Consumer Confidence Rule Other 1 SDWIS / 090600161 / 7000
2023 Revised Total Coliform Rule MON 5 SDWIS / 090600161 / 8000
2023 Chlorine MR 2 SDWIS / 090600161 / 0999
2019 cis-1,2-Dichloroethylene MR 2 SDWIS / 090600161 / 2380
2019 Xylenes, Total MR 2 SDWIS / 090600161 / 2955
2019 DICHLOROMETHANE MR 2 SDWIS / 090600161 / 2964
2019 o-Dichlorobenzene MR 2 SDWIS / 090600161 / 2968
2019 p-Dichlorobenzene MR 2 SDWIS / 090600161 / 2969
2019 Vinyl chloride MR 2 SDWIS / 090600161 / 2976
2019 trans-1,2-Dichloroethylene MR 2 SDWIS / 090600161 / 2979
2019 1,2-Dichloroethane MR 2 SDWIS / 090600161 / 2980
2019 1,1,1-Trichloroethane MR 2 SDWIS / 090600161 / 2981

How Yurok - McCoy - Kenek Compares

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

Metric Yurok - McCoy - Kenek EPA Region 9 — Tribal Water Systems avg Federal benchmark
Total violations 117 - SDWA compliance, any non-zero count is a recorded breach
Health-based violations 17 - Indicates a contaminant exceeded a federal MCL
PFAS detection None - EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 30 - 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 Yurok - McCoy - Kenek water safe to drink? ▼
Yurok - McCoy - Kenek (PWS ID: 090600161) has 117 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 30 people using Surface Water sources.
How many people does Yurok - McCoy - Kenek serve? ▼
Yurok - McCoy - Kenek serves 30 people in Klamath, EPA Region 9 — Tribal Water Systems. It is a Native American-owned system using Surface Water water sources with 8 service connections.
What type of violations does Yurok - McCoy - Kenek have? ▼
Yurok - McCoy - Kenek has 117 total violations: 17 health-based violations (MCL exceedances or treatment failures), 99 monitoring/reporting violations, and 17 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in Yurok - McCoy - Kenek water? ▼
No PFAS testing data is available for Yurok - McCoy - Kenek under the EPA's UCMR5 monitoring program.
What water source does Yurok - McCoy - Kenek use? ▼
Yurok - McCoy - Kenek 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.