Drinking Water


Environmental Health Specialist

The Drinking Water program works to ensure safe drinking water for all residents of Kittitas County, through inspections, education, and testing.


Resource materials and information for private water systems are available for questions concerning how to provide and maintain a safe water supply. Bacteriological testing of water well samples is available through the Environmental Health office in partnership with the Valley Environmental Laboratory in Yakima and Cascade Analytical in Union Gap. These labs are state approved for water analysis.

If you are developing property and are planning to drill a well on the property, a permit for the well is required by the Department of Ecology. That office is in Yakima (509) 575-2490. A list of well drillers is available upon request from the Environmental Health office.

Kittitas County Public Health Department monitors a percentage of wells drilled within this county for proper sealing, tagging and decommissioning of water wells. Information about this well delegation program is available from the Environmental Health office.

Public "group B" well systems provide water to developments with three to 14 homesites. These systems do not exceed the 5000 gallon usage limit per day and are considered to be "exempt" wells. An inspection for siting purposes is required for these systems prior to drilling. Workbooks and laboratory information can be obtained from the Environmental Health office. Kittitas County Environmental Health Department reviews and approves Group B water systems serving from three connections (houses) to nine connections. Proposed Group B water systems to serve ten to fourteen connections are reviewed and approved by the Washington State Department of Health.

Department of Health Fees will apply for Group B Water review and approval.

Well Drillers

Water Systems Forms and Information

Well Site Inspection Request Form
Request for Well Sampling
Group B Public Water System Expansion Form

For the Group B workbook and appendices go to the Washington State Department of Health website and search by publication number.

  • Group B Water System Design Guidelines, #331-467
  • Group B Design Workbook, #331-468

A complete Group B Water System Packet containing all forms, Group B workbook, and Group B Water System Guidelines is also available for $8.00 at the Kittitas County Public Health Department, 507 N Nanum St, Suite 102, Ellensburg.

Resources & Links