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Drinking Water and wells
Irrigation Wells

Water wells may be drilled or converted from a drinking water source solely for the purpose of irrigating land.  Washington Department of Health, Washington Department of Ecology and Clark County Public Health each play a role ensuring irrigation wells are constructed, utilized, and maintained in a manner that provides source protection and public safety.

Well driller inform us of all intents to drill a well.  New and existing wells proposed for irrigation uses must be tested for water quality (coliform and nitrate).  Applicants are responsible for collecting water samples for analysis by a Washington State Certified Laboratory.  Some local laboratories are listed on the Service Provider list (PDF).

Irrigation wells must meet the following criteria to be considered for approval:

  • All proposed irrigation wells must be located on lots with a minimum lot size of .5 acres or larger, and the proposed irrigation well must be located within the property boundary of the applicant's lot.
  • No more than 5,000 gallons per day shall be withdrawn from an irrigation well, nor more than .5 acres be irrigated, without possession of a valid water right certification granted by the Department of Ecology.
  • The proposed irrigation well and "lift" method must be in safe and operation condition.

How to apply:

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(360) 397-8000 ext. 7205

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(360) 397-8000 ext. 7214