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Public Water System
ALDERWOOD WATER DISTRICT
PWSID WA5301300 · Washington · 245,715 people served
A
ExcellentALDERWOOD WATER DISTRICT is an EPA-regulated public water system in Washington (PWSID WA5301300). It serves an estimated 245,715 residents — a mid-sized community of customers — across 1 community across 1 ZIP code.
ALDERWOOD WATER DISTRICT has maintained full EPA Safe Drinking Water Act compliance over the most recent five-year reporting window. No health-based Maximum Contaminant Level (MCL) exceedances are on record. The grade of A reflects this clean compliance history.
Service Area
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Centered on the averaged ZIP-code centroid of 1 ZIP served.
Population
245,715
Cities
1
ZIPs
1
Violations
0
EPA Health-Based Violations
Health-based Maximum Contaminant Level (MCL) violations on file for ALDERWOOD WATER DISTRICT over the past five years of EPA SDWIS reporting.
✅
No health-based violations in the last 5 years.
ALDERWOOD WATER DISTRICT's water systems have met EPA health-based Maximum Contaminant Level (MCL) requirements throughout the EPA reporting window. This does not mean zero detection of regulated contaminants — it means all measured concentrations remained below their federal action levels.
Cities Served by ALDERWOOD WATER DISTRICT
ZIP Codes Served
About this system
EPA records this system as PWSID WA5301300. Data reflects the most recent EPA SDWIS publication as of 2026-05-18. Public Water System Identifiers (PWSIDs) are assigned by the EPA's Safe Drinking Water Act program to track every regulated water utility in the United States. The first two letters typically indicate the state primacy agency. For real-time water quality information, contact ALDERWOOD WATER DISTRICT directly or review their annual Consumer Confidence Report (CCR).
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