Riverhill Homeowners Assn
EPA ID: WA5372810 · 215 people served · 1 ZIP code
Over five tracked years, Riverhill Homeowners Assn has stayed completely violation-free for its 215 residents.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Map
Coverage area for Riverhill Homeowners Assn Source: EPA SDWIS service area boundaries.
Service area boundary
Service Area Demographics
The Riverhill Homeowners Assn serves a community with a median household income of $85,571 and an estimated 12,398 residents across its service area. Approximately 43% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
Environmental Justice Note: 36% 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?
Riverhill Homeowners Assn'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 Mason 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
Riverhill Homeowners Assn (EPA ID: WA5372810) is a community water system in Washington that serves approximately 215 people from groundwater sources.
This system serves ZIP code 98528 in Belfair.
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
- 98528 — Belfair
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Riverhill Homeowners Assn (WA5372810) on EPA.gov.
Frequently Asked Questions
Is Riverhill Homeowners Assn water safe to drink?
Based on EPA records, Riverhill Homeowners Assn has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Riverhill Homeowners Assn serve?
Riverhill Homeowners Assn serves approximately 215 people across 1 ZIP code in Washington.
Where does Riverhill Homeowners Assn get its water?
The primary water source is groundwater.