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UNION HILL WATER ASSOCIATION INC

Washington — Community Water System — PWSID: WA5390260

System Information

PWSIDWA5390260
System NameUNION HILL WATER ASSOCIATION INC
System TypeCommunity Water System
Water SourceGround Water
Activity StatusActive
Owner TypePrivate
EPA Region10
Serves SchoolNo
WholesalerYes
First ReportedFeb 7, 1981
Last ReportedDec 11, 2025

Location & Contact

StateWashington
CityRedmond
ZIP Code98053
Address5020 236th Ave NE
OrganizationUNION HILL WATER ASSOCIATION INC
Phone—

Population & Service

Population Served8,720
Service Connections2,104

Drinking Water Violations (311)

This water system has 311 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, 2013 — Consumer Confidence Rule Other No No — — — Resolved Sep 13, 2013 Consumer Confidence Rule
Jul 1, 2010 — Consumer Confidence Rule Other No No — — — Resolved Sep 22, 2010 Consumer Confidence Rule
Jan 1, 2005 Mar 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,1,1-Trichloroethane MR No Yes — 0.2 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 cis-1,2-Dichloroethylene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 Carbon tetrachloride MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloropropane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 Tetrachloroethylene MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2,4-Trichlorobenzene MR No Yes — 0.07 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 o-Dichlorobenzene MR No Yes — 0.6 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 1,2-Dichloroethane MR No Yes — 0.005 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 p-Dichlorobenzene MR No Yes — 0.075 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2005 Volatile Organic Chemicals
Jan 1, 2005 Mar 31, 2005 trans-1,2-Dichloroethylene MR No Yes — 0.1 mg/L — Resolved Mar 31, 2005 Volatile Organic 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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