Key Center Water System
EPA ID: WA5338450 · 561 people served · 3 ZIP codes
EPA monitoring data for Key Center Water System shows an unblemished five-year compliance history — no violations of any kind have been recorded for this utility, which supplies water to approximately 561 people, covering every reporting cycle without a single MCL exceedance or monitoring lapse.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Key Center Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Key Center Water System serves a community with a median household income of $122,827 and an estimated 59,119 residents across its service area. 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?
Key Center Water System'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.
About 1% of homes in Pierce County, Washington rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
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
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
Key Center Water System (EPA ID: WA5338450) is a community water system in Washington that serves approximately 561 people from groundwater sources.
This system provides water to 3 ZIP codes across 1 community.
Violation History
Lead & Copper
No Lead and Copper Rule sampling data available for this water system.
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
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Key Center Water System (WA5338450) on EPA.gov.
Frequently Asked Questions
Is Key Center Water System water safe to drink?
Based on EPA records, Key Center Water System has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Key Center Water System serve?
Key Center Water System serves approximately 561 people across 3 ZIP codes in Washington.
Where does Key Center Water System get its water?
The primary water source is groundwater.