Longwood Water Association
EPA ID: WA5348160 · 25 people served · 1 ZIP code
Throughout five consecutive years of federal water monitoring, Longwood Water Association recorded zero violations — solid performance for a utility serving 25 people.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Longwood Water Association Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Longwood Water Association serves a community with a median household income of $103,941 and an estimated 7,052 residents across its service area. Approximately 54% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Longwood Water Association'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 2% of homes in Island 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 60th 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
Longwood Water Association (EPA ID: WA5348160) is a community water system in Washington that serves approximately 25 people from groundwater sources.
This system serves ZIP code 98236 in Clinton.
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
- 98236 — Clinton
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Longwood Water Association (WA5348160) on EPA.gov.
Frequently Asked Questions
Is Longwood Water Association water safe to drink?
Based on EPA records, Longwood Water Association has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Longwood Water Association serve?
Longwood Water Association serves approximately 25 people across 1 ZIP code in Washington.
Where does Longwood Water Association get its water?
The primary water source is groundwater.