How Riverside Handles Water Use Rules: A Practical Guide
Riverside maintains 190 local ordinances across all categories, and 2 of those deal specifically with water use rules. Here is a breakdown of what the city actually requires, what is prohibited, and where Riverside falls on the strict-to-permissive spectrum compared to other cities.
Turf Replacement Rebates
If a Riverside landscape project uses the code's prescriptive compliance option instead of the full water-budget calculation, new turf is capped at 25% of the landscape area for homes and banned entirely on commercial and institutional sites under RMC §19.570.130(B)(4); turf is also barred on steep slopes and in narrow parkways.
Key details: Residential turf cap (prescriptive option): 25% of landscape area. Nonresidential turf (prescriptive option): None allowed. Turf banned on slopes exceeding: 1 ft rise per 4 ft run. Turf banned in parkways under: 10 ft wide. Applicability threshold: New ≥500 sq ft / rehab ≥2,500 sq ft.
A landscape plan that exceeds the 25% residential turf cap or includes any turf on a covered nonresidential project under the prescriptive option is rejected at Planning Division plan check, and no certificate of occupancy or final City approval issues until the landscape and irrigation plans are brought into compliance and installed as approved (§19.570.030). Under City Charter §417, an installed violation of the adopted landscape ordinance can also be prosecuted as a misdemeanor, carrying up to a $1,000 fine, six months' imprisonment, or both.
Recycled Water Rules
Covered landscape projects in Riverside must design irrigation systems to allow current or future use of recycled water under RMC §19.570.070, which folds in Chapter 14.28's mandatory-use requirement by reference. Landscapes actually irrigated with recycled water get a looser water budget as a 'special landscape area.'
Key details: Governing section: RMC §19.570.070. Cross-referenced ordinance: Chapter 14.28, Mandatory Use of Recycled Water. Recycled-water landscapes: Classified as 'special landscape area'. ETAF cap, special landscape area: 1.0 (vs. 0.55/0.45 standard). Graywater systems must meet: Cal. Plumbing Code Title 24, Pt. 5, Ch. 16.
Landscape and irrigation plans for a covered project that aren't designed to accommodate recycled water where required are rejected at Planning Division plan check, and the City won't issue a Certificate of Completion under §19.570.060 until the irrigation system is installed as approved. City Charter §417 makes an uncorrected violation of the adopted landscape ordinance a misdemeanor, with a maximum penalty of a $1,000 fine, six months' imprisonment, or both.
The Bottom Line
Riverside's water use rules rules are a mixed bag. Some areas are strict, others are relaxed, and the details matter. The best approach is to check the specific rule that applies to your situation rather than assuming Riverside is broadly strict or permissive.
All of the above reflects Riverside's municipal code as of our last review. If you need specifics on fines, exemptions, or filing requirements, the detailed ordinance pages linked above have the full breakdown.