SEQUIM CITY OF

Washington — Community Water System — PWSID: WA5377620

System Information

PWSIDWA5377620
System NameSEQUIM CITY OF
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerNo
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CitySEQUIM
ZIP Code98382-3317
Address152 West Cedar Street
OrganizationSEQUIM CITY OF
Phone

Population & Service

Population Served14,293
Service Connections4,296

Drinking Water Violations (10)

This water system has 10 violations recorded in the EPA SDWIS database.

Begin Date End Date Contaminant Category Health-Based Major Measured Federal MCL State MCL Status Return to Compliance Rule
Jul 1, 2024 Consumer Confidence Rule Other No No Resolved Feb 19, 2025 Consumer Confidence Rule
Oct 1, 1979 Oct 31, 1979 Selenium MR No No 0.05 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Gross Alpha, Excl. Radon and U MR No No 15 pCi/L Archived Oct 31, 1979 Radionuclides and Revised Rad Rule
Oct 1, 1979 Oct 31, 1979 Arsenic MR No No 0.010 mg/L Archived Oct 31, 1979 Arsenic Rule
Oct 1, 1979 Oct 31, 1979 Nitrate MR No No 10 mg/L Archived Oct 31, 1979 Nitrate Rule
Oct 1, 1979 Oct 31, 1979 Mercury MR No No 0.002 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Cadmium MR No No 0.005 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Fluoride MR No No 4.0 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Barium MR No No 2 mg/L Archived Oct 31, 1979 Inorganic Chemicals
Oct 1, 1979 Oct 31, 1979 Chromium MR No No 0.1 mg/L Archived Oct 31, 1979 Inorganic Chemicals

About This Water System

Public water system data comes from the EPA Safe Drinking Water Information System (SDWIS). Systems with violations must notify customers. Contact your water utility for the latest annual water quality report.

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