Whatcom County, WA Landscaping Rules: Water Restrictions (2026)
Water restrictions in Whatcom County, WA, also called the watering schedule, outdoor irrigation rules, or drought ordinance, set which days and hours you can run sprinklers or irrigation.
Key Facts
- Water system
- Prior appropriation
- Nooksack basin
- WRIA 1 adjudication (2024)
- Adjudication court
- Whatcom County Superior Court
- Drivers
- Salmon flow, tribal claims
- Bellingham water
- Lake Whatcom reservoir
Summary
Whatcom is wet, but water is still governed. Washington follows prior appropriation, and the entire Nooksack basin (WRIA 1) is now in a court adjudication of every water right. Bellingham draws from Lake Whatcom and sets summer conservation rules.
Subject to existing rights all waters within the state belong to the public, and any right thereto, or to the use thereof, shall be hereafter acquired only by appropriation for a beneficial use and in the manner provided and not otherwise; and, as between appropriations, the first in time shall be the first in right.
Full Breakdown
Despite 35-plus inches of annual rain, western Washington summers turn dry from July into September, and Whatcom's water is fully governed. Washington is a prior-appropriation state, so surface or groundwater withdrawals require a water right from the Department of Ecology. In May 2024 Ecology filed a basin-wide adjudication of the Nooksack system (WRIA 1) in Whatcom County Superior Court, a process expected to run 10 to 15 years and touch some 30,000 water users, permit-exempt wells included, driven partly by Lummi and Nooksack tribal instream-flow claims for salmon. City of Bellingham customers follow utility conservation rules that tighten in drought.
Violations & Fines
Watering outside your utility's schedule brings warnings, surcharges, and escalating fines. Withdrawing surface or groundwater without a valid water right is an Ecology enforcement matter, and the adjudication may curtail unconfirmed claims.
Frequently Asked Questions
Do I need a water right to irrigate my Whatcom yard?
It rains all winter, so why worry about water?
Sources & Official References
Other rules in Whatcom County
How Whatcom County compares: Cities with the Strictest Water Restrictions·Compare Whatcom County to another location·View the Washington landscaping rules overview
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