In partnership with the Washington State Department of Health the Grant County Health District monitors public water systems, coordinates and/or approves new water systems, investigates complaints related to waterborne illnesses, and provides material for the collection of water samples for bacterial analysis. Technical assistance is available to private homeowner water systems.
The GCHD works with the Building Department to ensure potable water for new structures which will have plumbing. This application is called Water Availability and the application is below.
Group B Public Water Systems – In general, systems that serve between 2-9 connections and some single connections that need licensing. (Chapter 246-291 WAC GROUP B PUBLIC WATER SYSTEMS)
- Group B Water Process
- Well Site Inspection
- Group B Application cover sheet
- Group B Design WorkBook
- Group B Design Guidelines
- Group B Water System Ordinance
- Group B Public Water System State Regulation WAC 246-291
Group A Public Water Systems – In general, systems that serve 10 or more residential connections or 25 or more people a day. (Chapter 246-290 WAC Group A Water Systems)
Department of Health Regional Engineer for Grant County
Russell Mau, P.E.
Send an email to Russell
Private well information
- Private wells: Information for owners
- Well logs available from Department of Ecology on the Internet
- Private Well Disinfection
- Well Delegation Application (For Well Drillers to submit before drilling)
The drilling of new wells is regulated by the State Department of Ecology. The following information is located at their site:
How can I test my water?
GCHD is a drop-off point to have your water tested for bacteria and Nitrates. Testing your water only shows a snapshot of the water quality at the time of testing, it does not guarantee future quality.
Coliform bacteria are a group of bacteria commonly found in our environment, including the feces of man and other warm-blooded animals. While most of the bacteria in this group are found on the ground and within the first few feet of soil, it does include bacteria that can cause disease in humans, such as E. coli and Salmonella sp. The presence of coliform bacteria in drinking water indicates that the water has been contaminated with surface water, which may contain disease causing bacteria from the fecal material of man or other animals. This poses a potential health risk exists for those drinking the water. For more information about coliform:
Here in the Columbia Basin, high nitrates are the most common contaminate of our ground water. Nitrate (NO3) is a naturally occurring chemical made of nitrogen and oxygen. Nitrate is found in air, soil, water, and plants. Much of the naturally occurring nitrate in our environment comes from bacteria in the soil breaking down plant and animal wastes. People can add excess nitrate to the environment when we over-apply fertilizers, over irrigate, improperly store and/or spread manure and by failing septic systems.
Wells most vulnerable to nitrate contamination include shallow wells, dug wells with casings which are not watertight, and wells with damaged, leaking casing or fittings. For more information about nitrates;
- Division of Environmental Health/Office of Drinking Water
- Department of Ecology
- National Ground Water Association
- Information for well owners:
- The Ground water Foundation
- The Kid’s Pages about Ground water Foundation
- EPA’s Drinking Water from Private Wells
- EPA’s List of Drinking Water Contaminants and their Maximum Contaminant Level
Think it doesn’t happen? Waterborne Outbreaks, 1999-2000