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Thurston County, WA Landscaping Rules: Water Restrictions (2026)

Significant Restrictions
Compiled from the official code textEditor Martyn O'NeillLast verified September 2026

Water restrictions in Thurston 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

Governing law
Thurston County Code § 15.10.210
Firefighting irrigation ban
Sprinklers barred during active fires
Discretionary cutbacks
Department can restrict anytime
Applies to
County water system customers only
Enforcement
Thurston County Public Works

Summary

On county-run water systems, sprinkler and irrigation use is banned during active firefighting and outdoor watering can be curtailed anytime the department decides it's needed.

These county ordinances apply to unincorporated areas of Thurston County. Incorporated cities within the county may have their own rules that take precedence over county-level regulations.

No person shall knowingly use water from a water system for lawn or garden sprinkling/irrigation while a fire is being extinguished within the water system service area. The outdoor use of water and use of water for other than domestic purposes shall be under the jurisdiction of the department and shall be subject to change from time to time if the need arises.

View official code

Official source re-checked September 7, 2026: no newer edition of the code had been published (publisher’s edition: Code of Ordinances: Supplement 77).

Full Breakdown

Thurston County Public Works operates water systems in areas like Grand Mound and Boston Harbor, and Section 15.10.210 gives the department direct control over outdoor watering. Knowingly running a lawn or garden sprinkler or irrigation system while a fire is being fought anywhere in that water system's service area is a violation. Beyond that, the county reserves the right to limit outdoor and non-domestic water use "from time to time if the need arises", meaning a customer's normal irrigation schedule can be cut back on short notice during supply strain, not just wildfire response. This applies only to properties connected to a county water system, not private wells.

Violations & Fines

Violating water-use restrictions under Ch. 15.10 can trigger service fees and, per Section 15.10.500, penalties or criminal charges; the county can also disconnect service.

Frequently Asked Questions

Can I run my sprinklers whenever I want in Thurston County?
Only if you're on a private well. On a county water system, the department can restrict outdoor watering at any time under Section 15.10.210.
What happens if I irrigate during a fire nearby?
It's a violation. Section 15.10.210(B) bans lawn or garden sprinkling while a fire is being fought within the water system's service area.

Sources & Official References

Other rules in Thurston County

All Thurston County rules

How Thurston County compares: Cities with the Strictest Water Restrictions·Compare Thurston County to another location·View the Washington landscaping rules overview

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