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CHEHALIS WATER DEPARTMENT

Washington — Community Water System — PWSID: WA5312250

System Information

PWSIDWA5312250
System NameCHEHALIS WATER DEPARTMENT
System TypeCommunity Water System
Water SourceSurface Water
Activity StatusActive
Owner TypeLocal
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityChehalis
ZIP Code98532
Address2007 NE Kresky Ave
OrganizationCHEHALIS WATER DEPARTMENT
Phone—

Population & Service

Population Served11,426
Service Connections3,853

Drinking Water Violations (39)

This water system has 39 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
Jul 1, 2022 — Consumer Confidence Rule Other No No — — — Resolved Jun 30, 2023 Consumer Confidence Rule
Jul 1, 2006 Sep 30, 2006 Toxaphene MR No Yes — 0.003 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Simazine MR No Yes — 0.004 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 LASSO MR No Yes — — — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Archived Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Methoxychlor MR No Yes — 0.04 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Heptachlor epoxide MR No Yes — 0.0002 mg/L — Archived Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 HEXACHLOROBENZENE MR No Yes — 0.001 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) phthalate MR No Yes — 0.006 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Endrin MR No Yes — 0.002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Toxaphene MR No Yes — 0.003 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Heptachlor MR No Yes — 0.0004 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Pentachlorophenol MR No Yes — 0.001 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Chlordane MR No Yes — 0.002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 BHC-GAMMA MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Di(2-ethylhexyl) adipate MR No Yes — 0.4 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Simazine MR No Yes — 0.004 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Hexachlorocyclopentadiene MR No Yes — 0.05 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Atrazine MR No Yes — 0.003 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 LASSO MR No Yes — — — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Benzo(a)pyrene MR No Yes — 0.0002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
Jul 1, 2006 Sep 30, 2006 Chlordane MR No Yes — 0.002 mg/L — Resolved Sep 30, 2006 Synthetic Organic Chemicals
May 1, 2005 May 31, 2005 Surface Water Treatment Rule TT Yes No — — — Archived May 31, 2005 Surface Water Treatment Rule
Apr 1, 1992 Apr 30, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Archived Apr 30, 1992 Total Coliform Rule
Apr 1, 1992 Apr 30, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Archived Apr 30, 1992 Total Coliform Rule
Apr 1, 1992 Apr 30, 1992 Coliform (TCR) MCL Yes No — 5% of samples — Archived Apr 30, 1992 Total Coliform Rule
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

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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