Environmental Health
Drinking Water & Wells
Public Water Systems
 
  Public Water Systems  
 
 

Water System Classifications

  • Group A Public Water System is classified as a community system with 15 or more connections or serves greater than 25 or more people per day for 60 days or more per year.
  • Group B Public Water System is classified as a community system with 3 to 14 connections and less than 25 people per day or serves 25 or more people per day during fewer than 60 days per year.
  • Two Single-Family Residential Water Supply is one well serving two residences is considered a 2 Single-Family Residential water supply. Three or more connections are regulated by Article III of the Thurston County Sanitary Code as a Group B public water system.
  • Non-Public Well is classified as a single-family well with 1 single family residential connection or irrigation well.

Group A Water Systems

Group A systems are regulated by the Washington State Department of Health, Drinking Water Division (S.W. Drinking Water Operations, 360-664-9280). In cooperation with DOH, Thurston County performs well siting inspections for new wells and sanitary surveys for small Group A systems. ...more

Group B Water Systems

Group B water systems (see classification above) in Thurston County are regulated by the County Environmental Health Division. ...more

Two Single-Family Residential Water Supply

One well serving two residences is considered a 2 Single-Family Residential water supply. Three or more connections are regulated by Article III of the Thurston County Sanitary Code as a Group B public water system....more

 
 
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This page last updated: 03/28/14