Humboldt County, CA Landscaping Rules: Water Restrictions (2026)
Water restrictions in Humboldt County, CA, also called the watering schedule, outdoor irrigation rules, or drought ordinance, set which days and hours you can run sprinklers or irrigation.
Key Facts
- State law
- Cal. Gov. Code section 65595
- Local enforcer
- Humboldt County Planning & Building
- Enforcement start
- January 1, 2023
- Applies to
- New + rehabilitated landscapes (state thresholds)
Summary
Since January 1, 2023, Humboldt County's Building Division enforces California's Model Water Efficient Landscape Ordinance (MWELO) for new and renovated landscapes in unincorporated areas. State law (Gov. Code section 65595) requires every California local agency to either adopt a local water-efficient landscape ordinance at least as effective as the state model or default to the state MWELO.
On or before January 1, 2010, a local agency shall adopt one of the following: (1) A water efficient landscape ordinance that is, based on evidence in the record, at least as effective in conserving water as the updated model ordinance adopted by the department pursuant to subdivision (a). (2) The updated model ordinance adopted by the department pursuant to subdivision (a). ... If a local agency has not adopted an ordinance pursuant to subdivision (c) by January 1, 2010, the updated model ordinance adopted by the department pursuant to subdivision (a) shall apply within the jurisdiction of the local agency, and shall be enforced by the local agency.
Full Breakdown
California Government Code section 65595(c) required every local agency to adopt, by January 1, 2010, either a water-efficient landscape ordinance at least as effective as the updated state Model Water Efficient Landscape Ordinance (MWELO) or to adopt the MWELO itself. Under subsection (d), if a local agency fails to adopt either, the updated state MWELO automatically applies within the agency's jurisdiction. Humboldt County's General Plan and Building Division confirm that MWELO has been enforced in the unincorporated county since January 1, 2023, applying to new construction landscapes and rehabilitated landscapes that meet state-set square-footage thresholds. The General Plan Water Resources Element also directs the county to promote efficient landscape design in development projects to conserve water, control erosion, and reduce impervious surfaces. Day-to-day water-supply rules (drought stages, watering days, leak repair) come from the local water purveyor, not from the County Code.
Violations & Fines
Landscape projects subject to MWELO must submit a Landscape Documentation Package as part of the building/grading permit; permits will not be finalized without the package and post-installation Certificate of Completion. Drought-emergency violations are enforced by the local water purveyor under California Water Code section 350 et seq., which can include warnings, fines, and ultimately service discontinuation.
Frequently Asked Questions
Does Humboldt County have its own water-efficient landscape ordinance?
Who sets my watering schedule during a drought?
When does MWELO apply to my project?
Sources & Official References
Other rules in Humboldt County
How Humboldt County compares: Cities with the Strictest Water Restrictions·California rules heatmap·Compare Humboldt County to another location·View the California landscaping rules overview
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