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Home/Utilities/Washington/MERCER ISLAND CITY OF

MERCER ISLAND CITY OF

Serving 1 city in WA

Monitor
2 above health guidelines
26K
People Served
1
City
1
Water Sources
0
MCL Violations

Official MERCER ISLAND CITY OF Resources

MERCER ISLAND CITY OF Service Area

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Service Area

This map shows the approximate service area for MERCER ISLAND CITY OF. Actual coverage may vary. Contact the utility directly to confirm service availability at your address.

MERCER ISLAND CITY OF Water Quality Grade

B
Good

Water quality is good with minor concerns.

Quality Score80/100
2
Above Health Guidelines
0
EPA Violations

Grade is calculated based on contaminants exceeding health guidelines (MCLG) and EPA Maximum Contaminant Level violations. A = Excellent (90-100), B = Good (80-89), C = Fair (70-79), D = Poor (60-69), F = Failing (<60).

Is MERCER ISLAND CITY OF Water Safe to Drink?

MERCER ISLAND CITY OF has reported 2 contaminants above EPA health-based guidelines (MCLGs) in at least one city served. We recommend reviewing individual city reports below for specific water quality details.

This utility serves 25,748 people across 1 city in WA. Water quality can vary by location within the service area. Check individual city pages below for detailed contaminant data specific to your area.

MERCER ISLAND CITY OF Service Area

MERCER ISLAND CITY OF Contact & Information

Emergency Line

425) 577-5656

24/7 After-Hours

Mailing Address

9601 SE 36th St Mercer Island, WA 98040

Water Sources & Treatment

Water Sources

Surface water purchased

Treatment Methods

Not specified

Disinfectant Used

no disinfectant

MERCER ISLAND CITY OF Annual Water Quality Reports

2026 Water Quality Report
Latest Consumer Confidence Report (CCR)
View Report

Historical reports are being compiled. Check back soon for archived water quality data.

What is a CCR? The Consumer Confidence Report (CCR) is an annual water quality report that water utilities are required by the EPA to provide to customers. It contains information about your water source, detected contaminants, and compliance status.

Recommended Water Filters for MERCER ISLAND CITY OF

Based on water quality data from cities served by MERCER ISLAND CITY OF, we recommend NSF-certified filters that can remove contaminants above health guidelines.

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