Drinking Water Program
Safeguarding public drinking water supplies.
The State DHS Drinking Water Program contracts with Environmental Health to administer and enforce drinking water quality standards for public water systems in Marion County that use groundwater and serve a population of 3300 or less. Marion County has 190 public water systems that meet this criteria. A water system survey is conducted at these systems once every 3 to 5 years.
Marion County's Drinking Water Program is a resource for water system operators and the public when dealing with water quality alerts, public notices, water monitoring & testing, and sanitary hazard analysis.
Public Water System Classifications
Community Water System: A water system which supplies drinking water to 25 or more of the same people year-round in their residences. Examples are cities, towns, subdivisions, mobile home parks, and the like.
Non-transient Non-community Water System: A water system which supplies water to 25 or more of the same people at least six months per year in places other than their residences. Examples include schools, hospitals and work places.
Transient Non-community Water System: A water system which provides water in a place such as a restaurant or campground where people do not remain for long periods of time.
Oregon Very Small (OVS) Water System: Water systems serving 4 to 14 service connections and commercial or public premises used by 10 to 24 people at least 60 days per year.
Private wells are not regulated but there is an Oregon law, ORS 448.271, which requires
testing of domestic well water for a real estate transaction. Additional information on drinking water from private wells can be found at
The Oregon Well Water Program-OSU or at
Private Drinking Water Wells-EPA.
Drinking Water Related Forms & Resources
Revised Coliform Sampling Plan
Preparing for a Water System Survey
Operations & Maintenance Manual Template
Level 1 Coliform Investigation Form
Boil Water Advisory - Fecal Coliform / E. coli MCL
Public Water System Rules - OAR CH 333 Division 061 (Rev. 2/1/23)
OVS Water System Rules - OAR 333-061-0100 (1/1/22)
Translated Drinking Water Warnings
Lead Service Line Inventory Information
Revised Coliform Monitoring Requirements
Water System Training Courses
Arsenic Compliance Help
State Revolving Loan Fund
SDWIS Data Online
Well Log Query
CCR iWriter - Web based program for generating a Consumer Confidence Report (CCR).
More information can be found on the
OHA Drinking Water Program web page.