The 2012 Rainwater Capture Act allows California residents to capture rainwater from rooftops for non-potable outdoor use without a state water-right permit, preempting most local barriers.
Water Code sections 10573-10574 authorize property owners to install and operate rain barrels and cisterns that collect rooftop runoff for landscape irrigation without obtaining a state water-rights appropriation. Local building permits may apply for systems above 5,000 gallons or those connected to plumbing, but cities cannot ban basic rain barrel use. The Plumbing Code (Title 24, Part 5, Chapter 17) sets uniform standards when potable cross-connections exist, ensuring statewide consistency.
Improper potable cross-connections may trigger health code enforcement and require system disconnection or correction.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Walnut Creek, CA
Walnut Creek restricts RV, boat, and trailer parking in residential zones. These vehicles cannot be stored in front yards or on public streets for extended p...
Walnut Creek, CA
Walnut Creek enforces the California Vehicle Code 22651(k) statewide 72-hour street parking limit. Downtown has metered parking and timed zones. Residential ...
Walnut Creek, CA
Walnut Creek restricts overnight parking of commercial vehicles in residential zones. Vehicles with commercial plates exceeding specified weight or length li...
Walnut Creek, CA
Properties in Walnut Creek's Very High Fire Hazard Severity Zone and State Responsibility Area — including the city's eastern hills near Mount Diablo and alo...
Walnut Creek, CA
Walnut Creek requires a building permit for above-ground swimming pools unless the prefabricated pool's walls are 24 inches or less and capacity is 5,000 gal...
Walnut Creek, CA
Walnut Creek does not list short-term rental as a permitted residential use and does not issue STR permits, so the city imposes no STR-specific insurance, su...
See how Walnut Creek's rainwater harvesting rules stack up against other locations.
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