Hilltop Water Owners Association
EPA ID: WA5333364 · 137 people served · 1 ZIP code
ZipCheckup's reading of EPA SDWIS for Hilltop Water Owners Association (WA5333364): no EPA violations recorded in the last five years. With a five-year violation-free history, Hilltop Water Owners Association delivers safe water to 137 residents.
Data: EPA SDWIS
Service Area Map
Coverage area for Hilltop Water Owners Association Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Hilltop Water Owners Association serves a community with a median household income of $76,528 and an estimated 1,020 residents across its service area. Approximately 66% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Hilltop Water Owners 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.
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
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
Hilltop Water Owners Association (EPA ID: WA5333364) is a community water system in Washington that serves approximately 137 people from groundwater sources.
This system serves ZIP code 98262 in Lummi Island.
Violation History
Lead & Copper
EPA Lead and Copper Rule evidence attributed directly to this water system:
| Lead Level | Exceeds Action Level | Sample Date |
|---|---|---|
| 0.0007 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.
- 98262 - Lummi Island
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Hilltop Water Owners Association (WA5333364) on EPA.gov.
Frequently Asked Questions
Is Hilltop Water Owners Association water safe to drink?
The accepted 2026Q2 ECHO snapshot contains zero violation records for Hilltop Water Owners Association 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 Hilltop Water Owners Association serve?
Hilltop Water Owners Association serves approximately 137 people across 1 ZIP code in Washington.
Where does Hilltop Water Owners Association get its water?
The primary water source is groundwater.
Frequently Asked Questions
How to cite this page
ZipCheckup. (n.d.). Hilltop Water Owners Association Water Quality Report, WA. https://zipcheckup.com/water-system/wa5333364/
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title = {{Hilltop Water Owners Association Water Quality Report, WA}},
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url = {https://zipcheckup.com/water-system/wa5333364/}
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