Lewis Company Water District #1
EPA ID: WA5347000 · 1,174 people served · 1 ZIP code
With a five-year violation-free history, Lewis Company Water District #1 delivers safe water to 1,174 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Lewis Company Water District #1 Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Lewis Company Water District #1 serves a community with a median household income of $68,125 and an estimated 484 residents across its service area. Approximately 57% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 40% of the population in this service area is classified as disadvantaged under EPA's EJScreen criteria. Communities with higher disadvantaged populations often face disproportionate environmental and health burdens, including aging water infrastructure and limited resources for remediation.
💧 Where Does Your Water Come From?
Lewis Company Water District #1'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 Lewis 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 70th 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
Lewis Company Water District #1 (EPA ID: WA5347000) is a community water system in Washington that serves approximately 1,174 people from groundwater sources.
This system serves ZIP code 98565 in Napavine.
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
- 98565 — Napavine
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Lewis Company Water District #1 (WA5347000) on EPA.gov.
Frequently Asked Questions
Is Lewis Company Water District #1 water safe to drink?
Based on EPA records, Lewis Company Water District #1 has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Lewis Company Water District #1 serve?
Lewis Company Water District #1 serves approximately 1,174 people across 1 ZIP code in Washington.
Where does Lewis Company Water District #1 get its water?
The primary water source is groundwater.