Water restrictions in Rialto, CA — also called the watering schedule, outdoor irrigation rules, or drought ordinance — set which days and hours you can run sprinklers or irrigation.
Rialto Water Services enforces year-round CA prohibited-use rules and assigned watering days. Under State Water Board Emergency Regulations and city policy, outdoor irrigation is limited to designated days, no runoff, no hose-down of hardscape, and no watering within 48 hours of rain.
Rialto's water utility (Rialto Water Services / Veolia) operates under statewide conservation rules adopted by the State Water Resources Control Board (Title 23 CCR §§ 980-985) and the City's Water Conservation/Shortage program. Prohibited practices include: irrigation causing runoff onto sidewalks or streets; washing driveways, sidewalks, or other hardscape with potable water; using a hose without a positive shut-off nozzle; irrigating during/within 48 hours of measurable rain; watering ornamental turf on public street medians; and serving water in restaurants except on request. Outdoor watering is generally limited to assigned days (commonly 3 days/week, before 8 AM or after 6 PM) per the city's drought stage. SB 606 / AB 1668 establish long-term efficiency standards (55 → 50 → 42 GPCD indoor by 2030). MWELO (Title 23 CCR §490 et seq.) applies to new and rehabilitated landscapes ≥500 sq ft.
Written warning for first violation; administrative fines escalate (typically $50, $100, $250, $500) for repeat offenses, plus possible flow restrictors for chronic violators. State Water Board prohibited-use violations carry fines up to $500/day.
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