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SULLIVAN LAKE COMPLEX

PWS ID: WA53FS890 · Colville, Washington 99114

SULLIVAN LAKE COMPLEX serves 251 people in Colville, Washington using Groundwater water sources. It has 53 recorded EPA violations, including 9 health-based violations. No PFAS contamination was detected in UCMR5 testing.

Water Quality Snapshot: SULLIVAN LAKE COMPLEX

SULLIVAN LAKE COMPLEX is a federal-owned transient non-community water system that delivers drinking water to 251 residents in Colville, Washington (Pend Oreille County) through 26 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 53 total violations for this system , of which 9 (17%) are health-based — meaning a contaminant exceeded an EPA Maximum Contaminant Level or a required treatment technique failed. A further 44 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 Coliform (TCR), recorded in 9 violations (MCL, health-based). 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. SULLIVAN LAKE COMPLEX's 53 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
251
Total Violations
53
Health-Based Violations
9
Water Source
Groundwater

System Details

System Type
Transient Non-Community
Owner Type
Federal
Connections
26
County
Pend Oreille
School/Daycare
No
MCL Violations
9
Monitoring Violations
44
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
Coliform (TCR) MCL 9 2006
Cadmium MR 2 2008
Chromium MR 2 2008
Arsenic MR 2 2008
Fluoride MR 2 2008
Barium MR 2 2008
Mercury MR 2 2008
Selenium MR 2 2008
1,2,4-Trichlorobenzene MR 1 2008
Coliform (TCR) MR 1 2003
1,1,2-Trichloroethane MR 1 2008
Nickel MR 1 2008
Vinyl chloride MR 1 2008
Thallium, Total MR 1 2008
Beryllium, Total MR 1 2008
Trichloroethylene MR 1 2008
Carbon tetrachloride MR 1 2008
Antimony, Total MR 1 2008
Toluene MR 1 2008
Benzene MR 1 2008
Styrene MR 1 2008
o-Dichlorobenzene MR 1 2008
DICHLOROMETHANE MR 1 2008
cis-1,2-Dichloroethylene MR 1 2008
CHLOROBENZENE MR 1 2008
1,2-Dichloroethane MR 1 2008
Ethylbenzene MR 1 2008
trans-1,2-Dichloroethylene MR 1 2008
1,1-Dichloroethylene MR 1 2008
Diquat MR 1 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 SULLIVAN LAKE COMPLEX.

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 WA53FS890 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 SULLIVAN LAKE COMPLEX 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
2025 Revised Total Coliform Rule MON 1 SDWIS / WA53FS890 / 8000
2008 Cadmium MR 2 SDWIS / WA53FS890 / 1015
2008 Chromium MR 2 SDWIS / WA53FS890 / 1020
2008 Arsenic MR 2 SDWIS / WA53FS890 / 1005
2008 Fluoride MR 2 SDWIS / WA53FS890 / 1025
2008 Barium MR 2 SDWIS / WA53FS890 / 1010
2008 Mercury MR 2 SDWIS / WA53FS890 / 1035
2008 Selenium MR 2 SDWIS / WA53FS890 / 1045
2008 1,2,4-Trichlorobenzene MR 1 SDWIS / WA53FS890 / 2378
2008 1,1,2-Trichloroethane MR 1 SDWIS / WA53FS890 / 2985
2008 Nickel MR 1 SDWIS / WA53FS890 / 1036
2008 Vinyl chloride MR 1 SDWIS / WA53FS890 / 2976
2008 Thallium, Total MR 1 SDWIS / WA53FS890 / 1085
2008 Beryllium, Total MR 1 SDWIS / WA53FS890 / 1075
2008 Trichloroethylene MR 1 SDWIS / WA53FS890 / 2984

How SULLIVAN LAKE COMPLEX Compares

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

Metric SULLIVAN LAKE COMPLEX Washington avg Federal benchmark
Total violations 53 69 SDWA compliance — any non-zero count is a recorded breach
Health-based violations 9 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 251 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 SULLIVAN LAKE COMPLEX water safe to drink? ▼
SULLIVAN LAKE COMPLEX (PWS ID: WA53FS890) has 53 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 251 people using Groundwater sources.
How many people does SULLIVAN LAKE COMPLEX serve? ▼
SULLIVAN LAKE COMPLEX serves 251 people in Colville, Washington. It is a Federal-owned system using Groundwater water sources with 26 service connections.
What type of violations does SULLIVAN LAKE COMPLEX have? ▼
SULLIVAN LAKE COMPLEX has 53 total violations: 9 health-based violations (MCL exceedances or treatment failures), 44 monitoring/reporting violations, and 0 treatment technique violations. Health-based violations indicate contaminant levels exceeded EPA safe limits.
Has PFAS been detected in SULLIVAN LAKE COMPLEX water? ▼
No PFAS testing data is available for SULLIVAN LAKE COMPLEX under the EPA's UCMR5 monitoring program.
What water source does SULLIVAN LAKE COMPLEX use? ▼
SULLIVAN LAKE COMPLEX uses Groundwater as its primary water source. It is classified as a Transient Non-Community Water System, serving transient populations.
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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