US Water Score: A
Water Quality Summary
Tap water quality in Medina, Washington (98039) receives an overall grade of A (Lower record-based concern) with a score of 100 out of 100, based on analysis of EPA compliance data, contaminant testing, and violation history. This is 9 points above the Washington state average of 91. Compared to the national average (75), this area performs significantly better. The area is served by Bellevue City Of, a surface water system providing water to approximately 321,349 people. The area has a clean violation record over the past 5 years — a positive indicator of consistent water quality management.
A score of 100/100 means public water-system records for Medina, WA show relatively few concerns in the US Water Score model. This is an internal score, not an EPA safety rating, and it does not guarantee conditions at any specific tap.
Common Questions
Based on public water-system records, Medina, Washington receives an internal US Water Score grade of A (Lower record-based concern) with a score of 100/100. This indicates relatively few system-level concerns in our model, but it is not an EPA safety rating and does not guarantee tap conditions inside individual homes.
ZIP code 98039 is served by 1 water system using surface water sources, providing water to approximately 321,349 people. Surface water systems are more susceptible to contamination from agricultural runoff, industrial discharge, and weather events, but typically undergo more extensive treatment including filtration and disinfection.
No lead data is currently available for ZIP code 98039. This may mean lead testing results haven't been reported recently, or the serving water system uses monitoring waivers. You can request a free lead test kit from most water utilities or purchase a certified home testing kit.
No PFAS ("forever chemicals") were detected in water systems serving Medina, Washington during the most recent EPA monitoring period (UCMR5). However, not all water systems have been tested for all PFAS compounds, and new contamination can occur over time.
Water systems serving Medina, Washington have zero violations in the last 5 years. This is a positive indicator of consistent regulatory compliance and water quality management.
Water in Medina, Washington shows no major contaminant concerns based on available data. A basic carbon filter can improve taste and reduce chlorine. For extra peace of mind, an NSF-certified pitcher filter or faucet-mount filter provides an affordable layer of protection.