Riverside CA Water Restrictions 2026

Current water restrictions in Riverside, California

Riverside is under Level 1 Conservation restrictions, limiting outdoor irrigation to 2 assigned days per week, effective under a mandatory order issued by Riverside Public Utilities in coordination with the Metropolitan Water District of Southern California (MWD).

MWD triggered the Level 1 conservation notice in March 2026 after the State Water Project allocation was cut to just 30% of requested supplies — the result of four consecutive below-average precipitation years across Southern California. As an MWD member agency, Riverside Public Utilities is bound by that notice and has implemented the corresponding outdoor watering limits across its service territory.

The restriction stems from Riverside's dependence on imported State Water Project supplies, which flow through the MWD system and supplement the city's local groundwater sources. When SWP allocations drop, Riverside's water portfolio tightens, and outdoor irrigation — the largest single use of residential water in inland Southern California — becomes the primary target for reductions.

In practical terms: a resident cannot water their lawn or garden whenever they feel like it. If your assigned watering days are, say, Tuesday and Friday, you may not run your sprinklers on a Wednesday morning. You also may not irrigate between 9 a.m. and 5 p.m. on any day, regardless of your schedule. Violations start with a written warning and escalate to fines for repeat offenses. The restriction has no fixed end date — it remains in effect until MWD lifts or adjusts the conservation notice based on improving water supply conditions.

For full program details and to confirm your assigned watering days, contact Riverside Public Utilities directly at riversideca.gov/utilities.

Riverside's watering days and hours

Rule	Details
Days per week	2
Day assignment	2 assigned days per week based on address
Allowed hours	Before 9 a.m. or after 5 p.m. only
Hand watering	Exempt — shut-off nozzle required
Drip irrigation	Exempt from day restrictions
New sod/seed	Usually 30-day establishment window — register with Riverside Public Utilities

Riverside Public Utilities assigns watering days based on your street address — typically using the last digit of your house number or your street name to split customers across different day combinations. Odd-numbered addresses are generally assigned different days than even-numbered addresses, spreading demand across the week and reducing peak-hour pressure on the distribution system. Log in to your Riverside Public Utilities account or call their customer service line to confirm the exact days tied to your property.

The 9 a.m.–5 p.m. watering blackout applies citywide every day of the week, including your assigned days. Watering during those hours causes significant evaporation loss under Riverside's intense inland heat — summer temperatures regularly exceed 105°F in the Inland Empire — so the restriction serves both conservation and efficiency goals. Running sprinklers before sunrise or after sunset maximizes water reaching the root zone rather than the atmosphere.

Multi-family residential and commercial properties are subject to the same two-days-per-week limit but may have different day assignments than single-family homes on the same block. Property managers responsible for common-area irrigation should verify their account's assigned days directly with Riverside Public Utilities to avoid violations on shared landscaping systems.

If you have mature trees that need supplemental irrigation during restrictions, Riverside's inland Mediterranean climate supports species like coast live oak (Quercus agrifolia), Canary Island date palm (Phoenix canariensis), and jacaranda (Jacaranda mimosifolia) — all common in Riverside neighborhoods. Deep-root watering via drip or soaker hose at the drip line, which falls under the drip exemption, is the recommended approach for keeping established trees alive through restricted periods without burning one of your two weekly sprinkler days.

Violation fines and enforcement

Offense	Penalty
First violation	Written warning
Second violation	Monetary fine
Subsequent violations	Escalating fines; potential flow restrictor installation

Riverside Public Utilities begins enforcement with a written warning rather than an immediate fine, giving residents a documented notice and a chance to correct behavior. If the violation recurs, fines are issued and can escalate with each subsequent offense. In severe or repeat cases, the utility has authority to install a flow restrictor on the service connection — a device that physically limits water flow — which is a significant disruption for any household and an outcome worth avoiding entirely.

Enforcement in Riverside combines multiple approaches. The utility's advanced metering infrastructure (AMI) smart meters log usage at hourly intervals, which allows staff to identify accounts with irrigation activity during restricted hours or on non-assigned days without needing a physical inspection. Riverside Public Utilities also responds to neighbor complaints submitted through the city's reporting portal. Investigation timelines vary, but documented meter data accelerates the process considerably. If you receive a violation notice you believe was issued in error — for instance, your drip system ran during a restricted period, which is actually exempt — you can submit a written appeal to Riverside Public Utilities with documentation of your system type and run schedule.

Other outdoor water rules

Beyond the irrigation schedule, Riverside's Level 1 Conservation rules restrict several other outdoor water uses. Given the city's hot inland climate, pool evaporation and car washing are among the highest-impact residential uses after lawn irrigation.

• Swimming pools and spas: New pool fills are prohibited or require a variance. Topping off an existing pool to compensate for evaporation is permitted, but allowing continuous overflow or operating decorative water features that recirculate into pools is not.
• Decorative fountains: Ornamental fountains and water features that do not recirculate water must be shut off during Level 1 restrictions.
• Vehicle washing: Washing a vehicle at home is only permitted with a hand-held hose fitted with a self-closing nozzle. Running a hose without a shut-off valve while washing a car is prohibited. Commercial car washes with water recycling systems are exempt.
• Pressure washing: Pressure washing driveways, sidewalks, and hardscape with potable water is prohibited unless required for health or safety reasons.
• Runoff: Allowing irrigation water to run off your property onto sidewalks, gutters, or streets is a violation on any day, not just restricted days.
• Restaurant water service: Restaurants may only serve drinking water to customers upon request — a rule that carries over from earlier California conservation mandates.
• Construction water: Contractors using potable water for dust control or compaction on job sites must obtain prior approval from Riverside Public Utilities and demonstrate no recycled water alternative is available.

How Riverside gets its water

Riverside's water supply comes from two primary sources: local groundwater pumped from the Riverside Basin (also referred to as the Bunker Hill Basin in the broader Upper Santa Ana Watershed) and imported surface water delivered through the Metropolitan Water District of Southern California's regional distribution system.

The imported water originates primarily from two massive conveyance systems. The State Water Project carries water from Northern California via the Sacramento-San Joaquin Delta south through the California Aqueduct to MWD's Inland Feeder pipeline, which delivers water to the Lake Skinner treatment facility in Temecula and the Robert A. Skinner Water Filtration Plant before distribution to member agencies including Riverside. The second source is the Colorado River, carried west via MWD's Colorado River Aqueduct from Lake Havasu and treated at the Henry J. Mills Water Treatment Plant in Riverside County.

Riverside Public Utilities operates its own treatment and distribution infrastructure, including the Tequesquite Water Treatment Plant and several groundwater production wells within city boundaries. In normal years, the utility blends imported MWD water with local groundwater to meet demand. During periods of restricted SWP allocation — like the current 30% cut triggering the Level 1 notice — the imported share shrinks and the utility must either increase groundwater pumping or reduce overall demand through mandatory conservation.

The Riverside Basin groundwater supply is managed cooperatively under adjudicated rights, meaning pumping allocations are legally established and cannot be unilaterally expanded in a crisis. This is a key reason why outdoor irrigation restrictions matter: Riverside cannot simply pump unlimited local groundwater to replace lost SWP deliveries.

HOA and brown lawn protections

California homeowners are explicitly protected from HOA fines for drought-related lawn browning under Government Code § 65595 and the related provisions updated through AB 2100. Under this law, an HOA cannot fine a member for reducing or eliminating irrigation of grass or other plants in response to a local water shortage emergency or a mandatory water-use reduction order — both of which apply in Riverside right now under the Level 1 Conservation notice from Riverside Public Utilities.

The protection also extends to turf replacement: if you remove your lawn and install drought-tolerant or water-efficient landscaping, your HOA cannot prohibit or unreasonably restrict the installation of low-water-use plants, artificial turf, or permeable hardscape as a lawn replacement, provided the replacement meets basic aesthetic standards set out in the law.

If your HOA has threatened or issued a fine for drought-related dead grass or reduced irrigation during the current restriction period, use this template as a starting point:

"Dear [HOA Board/Management Company]: I am writing to formally notify you that any fine or violation notice issued for reduced lawn irrigation or drought-related brown grass at my property is unenforceable under California Government Code § 65595 and AB 2100. My property is located within the Riverside Public Utilities service area, which is currently operating under a mandatory Level 1 Conservation restriction limiting outdoor watering to two assigned days per week. I am in compliance with those restrictions. Please rescind any violation notice and confirm in writing that no fines will be assessed. I am happy to provide documentation of the current Riverside Public Utilities conservation order upon request."

Keep a copy of the current Riverside Public Utilities conservation notice — downloadable from riversideca.gov/utilities — with your letter as supporting documentation.

Keeping your lawn alive on restricted water

Grass type	Drought tolerance	Watering frequency (Level 1)	Notes
Bermudagrass	High	2x/week, deep watering	Goes dormant (tan) in drought; recovers well
Tall Fescue	Moderate	2x/week minimum; stress likely	Deeper roots than bluegrass; struggles above 100°F
UC Verde Buffalograss	Very high	1x/week or less once established	UC Davis-developed for CA; thrives in Riverside heat
Hybrid Bermuda (e.g., Tifway 419)	High	2x/week	Common in Riverside parks and residential lawns

Bermudagrass is the most practical choice for Riverside's climate under restriction conditions. It tolerates the 105°F+ summer temperatures common in the Inland Empire, goes dormant and turns tan rather than dying outright when water is reduced, and rebounds aggressively once watering resumes. Raise your mowing height to 1.5–2 inches during restriction periods — shorter cuts stress the plant and increase evaporation from the soil surface. Water deeply on your two assigned days rather than shallowly every day; deep watering encourages roots to chase moisture downward, building drought resilience.

Tall Fescue, popular in Riverside for its shade tolerance and green color, is under considerably more stress during Level 1. It does not go fully dormant the way Bermuda does, which means it can die rather than just brown out if watering is too infrequent during July and August when temperatures are extreme. If you have Tall Fescue, water in the early morning on both assigned days, apply at least one inch per session, and accept some browning on the hottest weeks rather than trying to maintain full green color. Riverside Public Utilities actively promotes conversion from Tall Fescue and traditional lawns to drought-tolerant alternatives — including UC Verde Buffalograss — through its turf removal rebate program, which pays per square foot of lawn removed and replaced with qualifying low-water landscaping.

Riverside water restriction FAQ

What are my specific assigned watering days in Riverside?

Riverside Public Utilities assigns two watering days per week based on your service address. The most reliable way to confirm your specific days is to log in to your online account at riversideca.gov/utilities or contact their customer service team directly. Do not assume your days based on a neighbor's schedule — assignments can differ by address even on the same block.

Can I water before 9 a.m. on a non-assigned day in Riverside?

No. The two-days-per-week limit applies regardless of what time you water. The 9 a.m.–5 p.m. blackout is a separate, additional restriction that applies on top of the day limit — it does not override the day assignment. You must both be on your assigned day and outside the 9-to-5 window to water legally.

Does Riverside Public Utilities use smart meters to catch watering violations?

Yes. Riverside Public Utilities has deployed advanced metering infrastructure (AMI) across much of its service territory. These meters record water usage in hourly intervals and transmit data automatically. Utility staff can identify accounts showing irrigation patterns on non-assigned days or during prohibited hours without visiting the property. If your data shows a consistent early-morning spike on a Wednesday and your assigned days are Tuesday and Saturday, that usage is flagged for follow-up.

What rebates does Riverside Public Utilities offer for removing my lawn?

Riverside Public Utilities runs a Water-Efficient Landscape Rebate Program that pays residential customers a per-square-foot rebate for removing irrigated turf and replacing it with drought-tolerant plants, mulch, or permeable hardscape. Rebate amounts and availability fluctuate with funding — check the current rates at riversideca.gov/utilities before scheduling a conversion. MWD also offers supplemental turf removal rebates for Riverside customers through its SoCal WaterSmart program at bewaterwise.com, which can be stacked with the local Riverside rebate for a higher combined payout.

Is drip irrigation really exempt from the two-day-per-week rule?

Yes — drip irrigation and micro-spray systems that apply water directly to the root zone without overspray or runoff are generally exempt from the day restrictions under Level 1 Conservation rules. This exemption exists because drip systems are significantly more efficient than spray heads and pose minimal evaporation loss. However, you still cannot run any irrigation system in a way that causes runoff onto pavement or into gutters, and the 9 a.m.–5 p.m. restriction on overhead spray still applies to any system with spray components.

Can I fill or top off my pool under Riverside's Level 1 restrictions?

Topping off an existing pool to replace normal evaporation loss is generally permitted under Level 1. Filling a new pool from scratch requires a variance or is prohibited outright — contact Riverside Public Utilities to confirm before proceeding. Riverside's summer evaporation rates are high given the Inland Empire heat, but running a pool pump continuously and allowing overflow or splash-out waste is prohibited. Using a pool cover when the pool is not in use significantly reduces evaporation and is strongly encouraged by Riverside Public Utilities during conservation periods.

What happens if I just installed new sod — do I have to let it die?

No. Riverside Public Utilities recognizes that newly installed sod and seeded areas require a temporary establishment watering period that exceeds two days per week. You must register your new installation with Riverside Public Utilities before or immediately after planting to receive a temporary establishment exception — typically 30 days. Watering during the establishment period must still comply with the no-watering blackout hours (9 a.m.–5 p.m.). If you do not register before watering daily, you risk receiving a violation notice even for legitimate new sod.

My HOA is fining me for a brown lawn — what do I do?

California Government Code § 65595 prohibits HOAs from fining members for drought-related dead or brown grass during a declared water shortage or mandatory conservation order. Riverside's Level 1 Conservation restriction qualifies. Send your HOA a written notice citing § 65595, referencing the active Riverside Public Utilities Level 1 mandatory order, and request written confirmation that the fine is rescinded. Download the current restriction notice from riversideca.gov/utilities and attach it to your letter. If the HOA does not respond, the California Department of Consumer Affairs and a local HOA dispute resolution service are your next steps.

What days can I water my lawn in Riverside?

2 assigned days/week Hand watering with a shut-off nozzle is typically allowed any day during permitted hours.

What time can I water in Riverside?

Watering is allowed Not 9am-5pm. Watering outside these hours is a violation even on your assigned day.

What are the fines for watering violations in Riverside?

First offense: Warning first. Repeat violations: Fines. Contact Riverside Public Utilities for the full enforcement schedule.

When will water restrictions end in Riverside?

Current Level 1 Conservation restrictions are in effect through Until conditions improve. Monitor https://www.riversideca.gov/utilities for the latest status.

Can I hand water during Riverside water restrictions?

Yes. Hand watering with a hose fitted with a shut-off nozzle is generally allowed on any day during permitted hours. Drip irrigation and soaker hoses are also typically exempt from the day-of-week schedule. Confirm specifics with Riverside Public Utilities.

How do I report a water waste violation in Riverside?

Contact Riverside Public Utilities or visit https://www.riversideca.gov/utilities. Most utilities accept online reports and respond within 48 hours.