Water restrictions in Napa County, CA — also called the watering schedule, outdoor irrigation rules, or drought ordinance — set which days and hours you can run sprinklers or irrigation.
Napa County urges residents to limit lawn watering and prioritize tree care during dry periods. Most water restrictions are imposed by individual retail providers — the City of Napa, Calistoga, St. Helena, American Canyon, and Yountville — each of which adopts its own Water Shortage Contingency Plan. The City of Napa currently bans conventional spray irrigation except on two assigned days per week.
Napa County itself does not run a retail water utility for most unincorporated parcels, so drought restrictions are set by each water purveyor. The City of Napa's Water Shortage Regulations limit conventional spray irrigation: even-numbered street addresses may water Mondays and Thursdays; odd-numbered addresses water Tuesdays and Fridays. Drip and micro-irrigation are permitted any day, and hand-watering with a shutoff nozzle is always allowed. No irrigation is permitted on consecutive days except for initial planting and lawn germination. Stage 2 and higher restrictions also limit pool draining and prohibit new lawn installation. The Napa County Watershed Information & Conservation Council (WICC) coordinates countywide conservation messaging. Under the California Water Code, all California water suppliers must follow conservation standards set by SWRCB, including the permanent ban on wasteful uses such as hosing down driveways or non-recirculating fountains.
Violations of City of Napa irrigation rules are typically warned before fines escalate. Continued violations can result in administrative penalties up to several hundred dollars per occurrence. Statewide prohibited wasteful uses (e.g., runoff from over-irrigation) are enforceable by SWRCB with fines up to $500 per day.
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See how Napa County's water restrictions rules stack up against other locations.
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