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WILLIAMS LAKE BEACH CLUB

PWS ID: WA5309280 · Tekoa, Washington 99033

WILLIAMS LAKE BEACH CLUB serves 45 people in Tekoa, Washington using Groundwater water sources. It has 409 recorded EPA violations, including 1 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: WILLIAMS LAKE BEACH CLUB

WILLIAMS LAKE BEACH CLUB is a private-owned community water system that delivers drinking water to 45 residents in Tekoa, Washington (Spokane County) through 42 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 409 total violations for this system , of which 1 (0%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 408 monitoring and reporting violations are on file. The most recent violation on record dates to 2021.

The most frequently cited contaminant at this system is Diquat, recorded in 20 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. WILLIAMS LAKE BEACH CLUB's 409 violations sit above 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
45
Total Violations
409
Health-Based Violations
1
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
42
County
Spokane
School/Daycare
No
MCL Violations
1
Monitoring Violations
408
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Diquat MR 20 2008
ETHYLENE DIBROMIDE MR 19 2007
1,2-DIBROMO-3-CHLOROPROPANE MR 19 2007
DICHLOROMETHANE MR 11 2008
o-Dichlorobenzene MR 11 2008
Vinyl chloride MR 11 2008
trans-1,2-Dichloroethylene MR 11 2008
1,2-Dichloroethane MR 11 2008
Carbon tetrachloride MR 11 2008
1,2-Dichloropropane MR 11 2008
Trichloroethylene MR 11 2008
1,1,2-Trichloroethane MR 11 2008
Tetrachloroethylene MR 11 2008
Toluene MR 11 2008
Ethylbenzene MR 11 2008
Benzene MR 11 2008
cis-1,2-Dichloroethylene MR 11 2008
Styrene MR 11 2008
CHLOROBENZENE MR 11 2008
1,1,1-Trichloroethane MR 11 2008
p-Dichlorobenzene MR 11 2008
1,2,4-Trichlorobenzene MR 11 2008
1,1-Dichloroethylene MR 11 2008
OXAMYL MR 10 2008
Aldicarb sulfoxide MR 10 2008
Aldicarb sulfone MR 10 2008
Carbofuran MR 10 2008
Aldicarb MR 10 2008
Pentachlorophenol MR 8 2007
Dalapon MR 6 2007

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 WILLIAMS LAKE BEACH CLUB.

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 WA5309280 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 WILLIAMS LAKE BEACH CLUB 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
2021 Total Haloacetic Acids (HAA5) MR 1 SDWIS / WA5309280 / 2456
2021 TTHM MR 1 SDWIS / WA5309280 / 2950
2020 Nitrate MR 3 SDWIS / WA5309280 / 1040
2014 Barium MR 1 SDWIS / WA5309280 / 1010
2014 Cadmium MR 1 SDWIS / WA5309280 / 1015
2014 Chromium MR 1 SDWIS / WA5309280 / 1020
2014 CYANIDE MR 1 SDWIS / WA5309280 / 1024
2014 Mercury MR 1 SDWIS / WA5309280 / 1035
2014 Nickel MR 1 SDWIS / WA5309280 / 1036
2014 Nitrite MR 1 SDWIS / WA5309280 / 1041
2014 Selenium MR 1 SDWIS / WA5309280 / 1045
2014 Beryllium, Total MR 1 SDWIS / WA5309280 / 1075
2014 Thallium, Total MR 1 SDWIS / WA5309280 / 1085
2014 Antimony, Total MR 1 SDWIS / WA5309280 / 1074
2014 Arsenic MR 1 SDWIS / WA5309280 / 1005

How WILLIAMS LAKE BEACH CLUB Compares

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

Metric WILLIAMS LAKE BEACH CLUB Washington avg Federal benchmark
Total violations 409 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 1 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 45 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 WILLIAMS LAKE BEACH CLUB water safe to drink? ▼
WILLIAMS LAKE BEACH CLUB (PWS ID: WA5309280) has 409 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 45 people using Groundwater sources.
How many people does WILLIAMS LAKE BEACH CLUB serve? ▼
WILLIAMS LAKE BEACH CLUB serves 45 people in Tekoa, Washington. It is a Private-owned system using Groundwater water sources with 42 service connections.
What type of violations does WILLIAMS LAKE BEACH CLUB have? ▼
WILLIAMS LAKE BEACH CLUB has 409 total violations: 1 health-based violations (MCL exceedances or treatment failures), 408 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in WILLIAMS LAKE BEACH CLUB water? ▼
No PFAS testing data is available for WILLIAMS LAKE BEACH CLUB under the EPA's UCMR5 monitoring program.
What water source does WILLIAMS LAKE BEACH CLUB use? ▼
WILLIAMS LAKE BEACH CLUB 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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