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Community Water System · PWS WA5326300

Fox Island Mutual Water Assoc

Fox Island, Washington 98333 - drinking water served from groundwater sources to 3,255 people, tracked in EPA SDWIS and UCMR5.

3,255
People served
415
EPA violations
3
Health-based
Untested
UCMR5 result

The verdict

EPA records 415 drinking-water violations at Fox Island Mutual Water Assoc, 1% of them health-based - above the Washington per-system average.

415
Total EPA violations on record
1%
Health-based (MCL / treatment failure)
3,255
People served by this system
N/A
PFAS compounds detected (UCMR5)

Water Quality Snapshot: Fox Island Mutual Water Assoc

Fox Island Mutual Water Assoc is a private-owned community water system that delivers drinking water to 3,255 residents in Fox Island, Washington (Pierce County) through 1,396 service connections. Its water is drawn from groundwater sources. EPA's Safe Drinking Water Information System records 415 total violations for this system , of which 3 (1%) 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 2015.

The most frequently cited contaminant at this system is 1,2,4-Trichlorobenzene, recorded in 16 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. Statewide, 98 of 247 UCMR5-tested systems have reported PFAS detections (39.7%).

Fox Island Mutual Water Assoc's 415 violations sit above the Washington average.

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
3,255
Total Violations
415
Health-Based Violations
3
Water Source
Groundwater

System Details

System Type
Community
Owner Type
Private
Connections
1,396
County
Pierce
School/Daycare
No
MCL Violations
3
Monitoring Violations
408
Treatment Tech Violations
0

Violation History

Contaminant violations recorded by EPA.

Contaminant Category Count Latest
1,2,4-Trichlorobenzene MR 16 2005
DICHLOROMETHANE MR 16 2005
o-Dichlorobenzene MR 16 2005
Vinyl chloride MR 16 2005
1,1-Dichloroethylene MR 16 2005
Carbon tetrachloride MR 16 2005
Trichloroethylene MR 16 2005
1,1,2-Trichloroethane MR 16 2005
Tetrachloroethylene MR 16 2005
CHLOROBENZENE MR 16 2005
Benzene MR 16 2005
p-Dichlorobenzene MR 16 2005
trans-1,2-Dichloroethylene MR 16 2005
1,1,1-Trichloroethane MR 16 2005
1,2-Dichloropropane MR 16 2005
Ethylbenzene MR 16 2005
Styrene MR 16 2005
cis-1,2-Dichloroethylene MR 16 2005
1,2-Dichloroethane MR 16 2005
Toluene MR 16 2005
Diquat MR 4 2007
Pentachlorophenol MR 4 2007
1,2-DIBROMO-3-CHLOROPROPANE MR 4 2007
ETHYLENE DIBROMIDE MR 4 2007
Coliform (TCR) MCL 3 1994
Barium MR 2 2005
Cadmium MR 2 2005
CYANIDE MR 2 2005
Fluoride MR 2 2005
Mercury MR 2 2005

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 Fox Island Mutual Water Assoc.

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 WA5326300 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 Fox Island Mutual Water Assoc 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
2015 Consumer Confidence Rule Other 2 SDWIS / WA5326300 / 7000
2007 Diquat MR 4 SDWIS / WA5326300 / 2032
2007 Pentachlorophenol MR 4 SDWIS / WA5326300 / 2326
2007 1,2-DIBROMO-3-CHLOROPROPANE MR 4 SDWIS / WA5326300 / 2931
2007 ETHYLENE DIBROMIDE MR 4 SDWIS / WA5326300 / 2946
2007 LASSO MR 2 SDWIS / WA5326300 / 2051
2007 Dalapon MR 2 SDWIS / WA5326300 / 2031
2007 Methoxychlor MR 2 SDWIS / WA5326300 / 2015
2007 Dinoseb MR 2 SDWIS / WA5326300 / 2041
2007 OXAMYL MR 2 SDWIS / WA5326300 / 2036
2007 Heptachlor epoxide MR 2 SDWIS / WA5326300 / 2067
2007 Heptachlor MR 2 SDWIS / WA5326300 / 2065
2007 Aldicarb sulfoxide MR 2 SDWIS / WA5326300 / 2043
2007 HEXACHLOROBENZENE MR 2 SDWIS / WA5326300 / 2274
2007 Chlordane MR 2 SDWIS / WA5326300 / 2959

How Fox Island Mutual Water Assoc Compares

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

Metric Fox Island Mutual Water Assoc Washington avg Federal benchmark
Total violations 415 69 SDWA compliance, any non-zero count is a recorded breach
Health-based violations 3 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 3,255 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 (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 Fox Island Mutual Water Assoc water safe to drink? ▼
Fox Island Mutual Water Assoc (PWS ID: WA5326300) has 415 recorded violations in the EPA SDWIS database. No PFAS contamination was detected in UCMR5 testing. This system serves 3,255 people using Groundwater sources.
How many people does Fox Island Mutual Water Assoc serve? ▼
Fox Island Mutual Water Assoc serves 3,255 people in Fox Island, Washington. It is a Private-owned system using Groundwater water sources with 1,396 service connections.
What type of violations does Fox Island Mutual Water Assoc have? ▼
Fox Island Mutual Water Assoc has 415 total violations: 3 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 Fox Island Mutual Water Assoc water? ▼
No PFAS testing data is available for Fox Island Mutual Water Assoc under the EPA's UCMR5 monitoring program.
What water source does Fox Island Mutual Water Assoc use? ▼
Fox Island Mutual Water Assoc 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.
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.