Four Lakes
EPA ID: WA5326195 · 212 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Four Lakes (WA5326195): no EPA violations recorded in the last five years. EPA monitoring data for Four Lakes shows an unblemished five-year compliance history - no violations of any kind have been recorded for this utility, which supplies water to approximately 212 people, covering every reporting cycle without a single MCL exceedance or monitoring lapse.
Data: EPA SDWIS
Service Area Map
Coverage area for Four Lakes Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Four Lakes serves a community with a median household income of $144,733 and an estimated 37,868 residents across its service area.
💧 Where Does Your Water Come From?
Four Lakes's water is pumped from underground aquifers. 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 70th percentile nationally for proximity to Superfund (NPL) sites. Groundwater sources near contaminated sites may face elevated risk from industrial chemicals.
Infrastructure Risk
PFAS Detected in Service Area
PFAS ("forever chemicals") have been detected in water serving this system's area. 6 detections recorded. 1 exceeds federal EPA limits (4 ppt for PFOA/PFOS).
Comparable Water Systems
Similar-sized systems in Washington
Estimated Remediation Costs
Average estimated costs across ZIP codes served by this system
Based on national averages for common remediation projects. Actual costs vary by property. Only issues flagged by EPA, FEMA, or state data for each ZIP code are included.
System Overview
Four Lakes (EPA ID: WA5326195) is a community water system in Washington that serves approximately 212 people from groundwater sources.
This system serves ZIP code 98038 in Maple Valley.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0015 mg/L | No | N/A |
No copper action-level exceedance record appears for this PWSID in the accepted LCR snapshot. This does not establish a clean copper measurement.
Need help with your water quality?
Typical cost: Water test: typically $20–$50 (DIY kit) · Professional inspection: $150–$400
Find the Right Water FilterFree tip: Let cold water run for 2 minutes before drinking — this helps flush lead from your pipes.
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.
- 98038 - Maple Valley
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Four Lakes (WA5326195) on EPA.gov.
Frequently Asked Questions
Is Four Lakes water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Four Lakes 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 Four Lakes serve?
Four Lakes serves approximately 212 people across 1 ZIP code in Washington.
Where does Four Lakes get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Four Lakes Water Quality Report, WA. https://zipcheckup.com/water-system/wa5326195/
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author = {{ZipCheckup}},
title = {{Four Lakes Water Quality Report, WA}},
year = {n.d.},
url = {https://zipcheckup.com/water-system/wa5326195/}
}