Perris, CA Landscaping Rules: Water Restrictions (2026)

Following consolidation completed October 15, 2024, EMWD became the water and wastewater provider for Perris customers, so outdoor watering rules come primarily from EMWD's Water Use Efficiency requirements rather than a separate city schedule. EMWD's permanent (year-round) prohibitions include: irrigating landscape 'only between 9:00 p.m. and 6:00 a.m.' (with limited exceptions for manual watering, new landscapes, and freeze protection); unattended potable-water irrigation limited to no more than fifteen minutes per day per station (longer allowed for low-flow drip and high-efficiency weather-based controllers); no excessive flow or runoff onto sidewalks, streets, or gutters; no hosing down driveways and other hard surfaces except for health/sanitary reasons; no watering during rain or within 48 hours after measurable rain; decorative fountains must recirculate; and no letting water run while washing vehicles. New landscaping must use low-water-demand plants, and new turf may only be installed for functional purposes. EMWD's Water Shortage Contingency Plan adds tiered stages; Stage 4 sets a maximum of two watering days per week June through August and one day per week September through May. Perris's own zoning code mirrors these limits in PMC 19.70.050, prohibiting excessive runoff and washing down paved surfaces. These mandatory rules align with the California State Water Board's statewide water-waste prohibitions but are enforced locally by EMWD.