Drinking Water

Program Overview

Our Drinking Water Program works with residents, businesses, and small water systems across Yakima County to maintain safe drinking water. Our services include well site inspections, Group B Water System approvals, technical guidance, and homeowner education.

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Additional Services

Well Start Notification

If you are a licensed well driller, you are required to notify the Yakima Health District before starting a water well project per WAC 173-160-040. YHD requires at least three business days’ notice, or notification as soon as possible if that is not possible.

To submit notification, call 509-249-6508, email YHD.Help.Desk@co.yakima.wa.us, or fill out this form.

Water Systems Review

Water System Review Letter Application

Mortgage Reviews

Well and septic inspections for lending requirements.

Mortgage Review Process Instructions
Mortgage Review Application
Mortgage Review Property Owners Statement
Mortgage Review Checklist

Types of Water Systems in Yakima County

Knowing your water source is important for understanding how your drinking water is managed and kept safe.

Individual Wells

Serve only one primary household and is managed by the homeowner

Two-Party or Shared Wells

Serve two primary households or one primary household and one additional dwelling unit (ADU)
Regulated by the Yakima Health District
Homeowners share responsibility for maintenance, repairs, and water testing

Group C Water Systems

Serve an in-home business or a limited use commercial project (such as a daycare)
Regulated by the Yakima Health District and follow the same approval process as two-party or shared wells
System owners are responsible for ongoing operation and maintenance

Group B Water Systems

Serve 3 to 9 households or commercial projects that serve fewer than 25 people
Regulated by the Yakima Health District
System owners are responsible for ongoing operation and maintenance

Group A Water Systems

Serve 10 or more households or 25 or more people
Regulated by the Washington State Department of Health

Need Help?

Contact our Environmental Health Help Desk

Email: YHD.HelpDesk@co.yakima.wa.us

Phone: 509-249-6508

Physical Address: 1210 Ahtanum Ridge Drive, Union Gap, WA 98903

Hours:
Monday, Wednesday, Thursday, and Friday: 8:30 AM–4:30 PM
Tuesday: 9:30 AM–4:30 PM

Drinking Water

Program Overview

Learn More About

Additional Services

Types of Water Systems in Yakima County

Need Help?

Contact Us

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