Mountain Ridge
EPA ID: WA53AB326 · 28 people served · 1 ZIP code
Mountain Ridge earns a clean bill from EPA monitoring — no violations in five years across a service area of 28 people.
Data: EPA SDWIS Last verified: 2026-04-02
Service Area Demographics
The Mountain Ridge serves a community with a median household income of $82,386 and an estimated 884 residents across its service area. Approximately 84% of housing stock was built before 1986, which increases the likelihood of lead service lines and older plumbing.
💧 Where Does Your Water Come From?
Mountain Ridge'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 Kittitas 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
Mountain Ridge (EPA ID: WA53AB326) is a community water system in Washington that serves approximately 28 people from groundwater sources.
This system serves ZIP code 98941 in Roslyn.
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
- 98941 — Roslyn
Data Sources
This report uses public data from the EPA Safe Drinking Water Information System (SDWIS). View the full compliance record for Mountain Ridge (WA53AB326) on EPA.gov.
Frequently Asked Questions
Is Mountain Ridge water safe to drink?
Based on EPA records, Mountain Ridge has no recorded violations in the past 5 years — a positive indicator of water quality management.
How many people does Mountain Ridge serve?
Mountain Ridge serves approximately 28 people across 1 ZIP code in Washington.
Where does Mountain Ridge get its water?
The primary water source is groundwater.