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Engineering

Utilities
Engineering Standards

Joe Stump, P.E., Utilities Manager
Joe.Stump@co.yakima.wa.us

Office Hours: M - F, 8:00 AM - 4:00 PM
Accounting Office: 574-2290
Engineering Office: 574-2300

 

Extending Mainlines from an Existing System

Water or wastewater service may be extended to serve property in locations where the service does not already exist, if the property is located within the service area of the particular system. For information on whether your property is in one of the County’s service areas, please contact Yakima County Public Services at (509) 574-2300.

Extending a water or wastewater line involves the following steps:

  1. Property owner contacts the Yakima County Public Services Department and describes where the property is located, the number of lots, and the existing and proposed land use (i.e. residential, commercial, etc.).
  2. County drafts a Water and Wastewater Extension Agreement describing the conditions upon which the County will assume ownership and provide services through the line extension.
  3. Property owner contracts with a licensed engineer to design the extension.
  4. Property owner’s engineer prepares and submits design drawings and specifications to the County for review and approval. Design drawings and specifications must be in accordance with the County’s Standard Details and Special Provisions.
  5. Property owner contracts with a licensed contractor to construct the extension.
  6. Property owner requests a preconstruction meeting with their engineer and contractor, and the County.
  7. Contractor constructs the extension in accordance with the approved design drawings and specifications.
  8. County accepts extension into the County’s system.

When a water or wastewater line is extended, it typically will need to be extended to the far end of the property. Additional details regarding the extension of water and wastewater lines are included in the example Water and Wastewater Extension Agreement.

Water Standard Details and Special Provisions

All Special Provisions Standard Details are provided in PDF format.

Wastewater Standard Details and Special Provisions

All Special Provisions Standard Details are provided in PDF format.

Developing a New Satellite System

In locations where it is too costly or impractical to extend water or wastewater services to serve a new development, it may be possible to construct a satellite system. Yakima County is available to own and operate water systems with 3 or more lots/connections and wastewater systems with 2 or more lots/connections if the lots/connections are within the Urban Growth Area. For lots/connections outside the Urban Growth Area, Yakima County is available to own and operate water or wastewater systems with 5 or more lots/connections.

For a description of the steps involved in constructing a satellite water system, see Service Request Process – New Satellite Water Systems.