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STEVENS CO PUD - CLAYTON

PWS ID: WA5313450 · Loon Lake, Washington 99148

STEVENS CO PUD - CLAYTON serves 725 people in Loon Lake, Washington using Groundwater water sources. It has 31 recorded EPA violations, including 0 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: STEVENS CO PUD - CLAYTON

STEVENS CO PUD - CLAYTON is a local-owned community water system that delivers drinking water to 725 residents in Loon Lake, Washington (Stevens County) through 260 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 31 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 31 monitoring and reporting violations are on file. The most recent violation on record dates to 2010.

The most frequently cited contaminant at this system is BHC-GAMMA, recorded in 2 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 Washington, EPA tracks 4,557 public water systems serving 9,736,844 people, with 314,648 cumulative violations and 20,590 health-based violations on record. About 92% of systems in the state carry at least one violation, and state-wide the average per system is 69 violations. STEVENS CO PUD - CLAYTON's 31 violations sit below the Washington average. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%). 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
725
Total Violations
31
Health-Based Violations
0
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Local
Connections
260
County
Stevens
School/Daycare
No
MCL Violations
0
Monitoring Violations
31
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
BHC-GAMMA MR 2 2010
Methoxychlor MR 2 2010
Toxaphene MR 2 2010
Di(2-ethylhexyl) phthalate MR 2 2010
Hexachlorocyclopentadiene MR 2 2010
Atrazine MR 2 2010
Heptachlor epoxide MR 2 2010
LASSO MR 2 2010
Heptachlor MR 2 2010
HEXACHLOROBENZENE MR 2 2010
Chlordane MR 2 2010
Endrin MR 2 2010
Di(2-ethylhexyl) adipate MR 2 2010
Simazine MR 2 2010
Benzo(a)pyrene MR 2 2010
Gross Alpha, Excl. Radon and U MR 1 1979

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 STEVENS CO PUD - CLAYTON.

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 WA5313450 on SDWIS

Source: EPA SDWIS Federal Reports Search

State Regulator

Washington Drinking Water Authority

Washington State Department of Health — Office of Drinking Water is the primacy agency that licenses and inspects STEVENS CO PUD - CLAYTON under EPA-delegated authority.

Open WA regulator portal

Source: Washington State Department of Health — Office of Drinking Water

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
2010 BHC-GAMMA MR 2 SDWIS / WA5313450 / 2010
2010 Methoxychlor MR 2 SDWIS / WA5313450 / 2015
2010 Toxaphene MR 2 SDWIS / WA5313450 / 2020
2010 Di(2-ethylhexyl) phthalate MR 2 SDWIS / WA5313450 / 2039
2010 Hexachlorocyclopentadiene MR 2 SDWIS / WA5313450 / 2042
2010 Atrazine MR 2 SDWIS / WA5313450 / 2050
2010 Heptachlor epoxide MR 2 SDWIS / WA5313450 / 2067
2010 LASSO MR 2 SDWIS / WA5313450 / 2051
2010 Heptachlor MR 2 SDWIS / WA5313450 / 2065
2010 HEXACHLOROBENZENE MR 2 SDWIS / WA5313450 / 2274
2010 Chlordane MR 2 SDWIS / WA5313450 / 2959
2010 Endrin MR 2 SDWIS / WA5313450 / 2005
2010 Di(2-ethylhexyl) adipate MR 2 SDWIS / WA5313450 / 2035
2010 Simazine MR 2 SDWIS / WA5313450 / 2037
2010 Benzo(a)pyrene MR 2 SDWIS / WA5313450 / 2306

How STEVENS CO PUD - CLAYTON Compares

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

Metric STEVENS CO PUD - CLAYTON Washington avg Federal benchmark
Total violations 31 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 0 4.5 Indicates a contaminant exceeded a federal MCL
PFAS detection None 39.7% EPA final rule (2024): PFOA/PFOS MCL = 4.0 ppt
Population served 725 2,137 Sizing context for compliance burden

Sources: EPA SDWIS and EPA National Primary Drinking Water Regulations (40 CFR Part 141). State averages computed across 4,557 regulated public water systems in Washington.

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 STEVENS CO PUD - CLAYTON water safe to drink? ▼
STEVENS CO PUD - CLAYTON (PWS ID: WA5313450) has 31 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 725 people using Groundwater sources.
How many people does STEVENS CO PUD - CLAYTON serve? ▼
STEVENS CO PUD - CLAYTON serves 725 people in Loon Lake, Washington. It is a Local-owned system using Groundwater water sources with 260 service connections.
What type of violations does STEVENS CO PUD - CLAYTON have? ▼
STEVENS CO PUD - CLAYTON has 31 total violations: 0 health-based violations (MCL exceedances or treatment failures), 31 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in STEVENS CO PUD - CLAYTON water? ▼
No PFAS testing data is available for STEVENS CO PUD - CLAYTON under the EPA's UCMR5 monitoring program.
What water source does STEVENS CO PUD - CLAYTON use? ▼
STEVENS CO PUD - CLAYTON 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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