Fox Island Mutual Water Assoc
EPA ID: WA5326300 · 3,255 people served · 1 ZIP code
ZipCheckup's reading of EPA records for Fox Island Mutual Water Assoc (WA5326300): no drinking-water violations recorded since 2021. Zero violations are listed in EPA monitoring data for Fox Island Mutual Water Assoc; a count of records like this is not a water-quality test for the 3,255 residents it serves.
Data: EPA SDWIS
Service Area Map
Coverage area for Fox Island Mutual Water Assoc Source: EPA SDWIS service area boundaries.
Service area boundary
Demographics of ZIP Codes Served
The ZIP codes associated with Fox Island Mutual Water Assoc have a median household income of $172,917 and about 3,365 residents live in those ZIP codes (Census; not the number of people this system supplies). Approximately 40% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Fox Island Mutual Water Assoc's water is classified in EPA records as a groundwater source. Groundwater is naturally filtered through rock and soil, but it can be vulnerable to PFAS contamination, nitrates from agriculture, and industrial chemicals that seep into the water table.
Superfund Proximity Note: This service area ranks in the 80th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
Comparable Water Systems
Similar-sized systems in Washington
System Overview
Fox Island Mutual Water Assoc (EPA ID: WA5326300) is a community water system in Washington that serves approximately 3,255 people from groundwater sources.
This system serves ZIP code 98333 in Fox Island.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| Below the reporting limit | No | 2025-12-31 |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Radon Risk in Service Area
1 of 1 ZIP records with known zones is in EPA Radon Zone 3.
The EPA recommends testing all homes regardless of radon zone. County radon zones cannot replace an in-home radon test.
ZIP Codes Served
Coverage: Service area ZIP codes sourced from EPA Community Water System Service Area Boundaries v3 (March 2026 release). These ZIPs reflect the actual deployment footprint recorded by WA or modeled from parcel and building-footprint data.
- 98333 - Fox Island
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View available EPA compliance records for Fox Island Mutual Water Assoc (WA5326300) on EPA.gov.
Frequently Asked Questions
Is Fox Island Mutual Water Assoc water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Fox Island Mutual Water Assoc in the inclusive 2021-2026 record-year window. This is a compliance-record finding, not a guarantee about water at a specific tap.
How many people does Fox Island Mutual Water Assoc serve?
Fox Island Mutual Water Assoc serves approximately 3,255 people across 1 ZIP code in Washington.
Where does Fox Island Mutual Water Assoc get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Fox Island Mutual Water Assoc Water Quality Report, WA. https://zipcheckup.com/water-system/wa5326300/
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title = {{Fox Island Mutual Water Assoc Water Quality Report, WA}},
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url = {https://zipcheckup.com/water-system/wa5326300/}
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