Plain Flats Water System
EPA ID: WA5339592 · 29 people served · 1 ZIP code
Five years of EPA monitoring have produced no violations for Plain Flats Water System — the supplier serving 29 residents has kept every contaminant level within federal limits, a result that places it among the top-performing utilities for systems with a service population of comparable size.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Plain Flats Water System Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Plain Flats Water System serves a community with a median household income of $85,594 and an estimated 7,817 residents across its service area. Approximately 52% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Plain Flats 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 Chelan County, Washington rely on private wells rather than public water systems. Private well owners are responsible for their own water testing and treatment.
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
Plain Flats Water System (EPA ID: WA5339592) is a community water system in Washington that serves approximately 29 people from groundwater sources.
This system serves ZIP code 98826 in Leavenworth.
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
- 98826 — Leavenworth
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Plain Flats Water System (WA5339592) on EPA.gov.
Frequently Asked Questions
Is Plain Flats Water System water safe to drink?
Based on EPA records, Plain Flats Water System has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Plain Flats Water System serve?
Plain Flats Water System serves approximately 29 people across 1 ZIP code in Washington.
Where does Plain Flats Water System get its water?
The primary water source is groundwater.