San Jose CA Water Restrictions 2026

Current water restrictions in San Jose, California

San Jose is under Stage 2 mandatory water restrictions, limiting outdoor irrigation to 2 days per week — a designation declared independently by the Santa Clara Valley Water District, not triggered by the statewide Metropolitan Water District Level 1 notice issued in March 2026.

The Santa Clara Valley Water District imposed Stage 2 restrictions specifically because Anderson Reservoir has been taken offline for seismic retrofitting and is not available as a supply buffer. Anderson, San Jose's largest reservoir with a capacity of roughly 90,000 acre-feet, has been drained as part of a major dam safety project — removing a critical local storage cushion that the region historically relied on during dry years.

This restriction is independent of the Metropolitan Water District's Level 1 conservation notice, which was triggered when the State Water Project allocation dropped to 30% of requested supplies in early 2026. Santa Clara Valley Water District does not receive MWD water directly; it manages its own portfolio through local reservoirs, groundwater recharge, and imported water through the Delta-Mendota Canal. The Anderson situation created a separate, locally driven need for mandatory cuts.

At the state level, California is in its fourth consecutive below-average precipitation year, which tightens the context for all Bay Area water agencies.

Practically speaking: a San Jose resident cannot water their garden on a Wednesday morning under any normal circumstances. If your street address ends in an odd number, your two allowed days are Monday and Thursday. Even-numbered addresses may water Tuesday and Friday. On those allowed days, irrigation is restricted to hours outside the 9 a.m.–5 p.m. window — meaning you must water before 9 a.m. or after 5 p.m. These restrictions remain in effect until Anderson Reservoir is restored to service, with no fixed end date currently announced.

Your assigned watering schedule

Your allowed days are determined by the last digit of your street address number — not your unit number in a complex, not your parcel number. If your home address is 4731 Camden Avenue, the "1" makes it odd: you water Monday and Thursday. If it's 1820 Blossom Hill Road, the "0" makes it even: Tuesday and Friday. The rule applies to the physical street address on file with the district.

For multi-family residential properties and commercial accounts, the property's primary street address governs the schedule. A large apartment complex at an odd-numbered address waters on Monday and Thursday — all units, all common area irrigation, all managed landscaping. Commercial property managers are expected to program centralized irrigation controllers accordingly. Smart irrigation controllers with weather-based sensors are strongly encouraged by Santa Clara Valley Water District as a compliance tool, and rebates are available through their programs.

Trees deserve particular attention during restricted watering periods. Coast live oak (Quercus agrifolia), a native species common in San Jose's older neighborhoods and parks, is highly drought-adapted once established but stressed young specimens need deep, infrequent watering prioritized on your allowed days. Valley oak (Quercus lobata), planted widely along San Jose creek corridors and residential streets, similarly benefits from slow deep irrigation rather than short frequent cycles. Blue gum eucalyptus, still prevalent in many San Jose yards despite removal campaigns, has high water demand and should have drip lines maintained even under Stage 2 to prevent fire-hazard die-back.

Fines and penalties

Santa Clara Valley Water District enforces Stage 2 restrictions through a combination of field patrols, complaint-driven inspections, and increasingly through data from Advanced Metering Infrastructure (AMI) smart meters being deployed across San Jose. AMI meters allow the district and its retail partners — including San Jose Water Company — to flag accounts showing consumption patterns inconsistent with a two-day-per-week schedule. A spike in water use on a Wednesday, for instance, can trigger a follow-up inspection. Complaints submitted through the district's online reporting portal at valleywater.org are typically reviewed within a few business days, with field response times varying by patrol availability.

If you receive a warning or fine you believe was issued in error — for example, if drip irrigation was mistaken for prohibited sprinkler use — Santa Clara Valley Water District does provide an appeals process. You must submit your appeal in writing with supporting documentation (photos, controller logs, drip system maps) within the window specified on the notice. Drip systems and hand watering with a shut-off nozzle are exempt from the day-of-week restrictions, so documenting your irrigation method is your strongest defense.

Other outdoor water rules

Beyond lawn irrigation schedules, Santa Clara Valley Water District's Stage 2 rules restrict several other outdoor water uses relevant to San Jose residents. The region's warm summers, valley dust, and large tech-campus footprints make vehicle washing and impervious surface cleaning particularly high-use categories to understand.

• Vehicle washing: Permitted only with a hose equipped with a self-closing shut-off nozzle, or at a commercial carwash that recycles water. Running a free-flowing hose to wash a car or truck is prohibited.
• Driveways and hardscapes: Hosing down driveways, sidewalks, patios, or parking areas is prohibited. Sweeping or using a blower is required. Commercial pressure washing for safety or health code compliance may be granted an exception — contact Santa Clara Valley Water District directly.
• Swimming pools and spas: New pool filling is prohibited without a variance. Topping off an existing pool to replace evaporation loss is permitted, but pools must have a cover to reduce evaporation, which San Jose's hot inland summer temperatures accelerate significantly.
• Decorative fountains: Fountains and water features that do not recirculate water must be shut off. Recirculating fountains are permitted.
• Restaurants: Water may only be served to customers upon request — not placed automatically at tables.
• Construction: Potable water use for dust control on construction sites requires approval; recycled water must be used where available.

San Jose's water supply and source

San Jose's water supply is managed by the Santa Clara Valley Water District as the wholesale and groundwater management agency, with retail delivery handled primarily by San Jose Water Company for most residential customers and by the City of San Jose's Municipal Water System for some areas.

The district's supply portfolio has three main components. The first is local surface water from reservoirs in the Diablo Range and Santa Cruz Mountains. These include Calero Reservoir, Chesbro Reservoir, Uvas Reservoir, Lexington Reservoir on Los Gatos Creek, Stevens Creek Reservoir, and Almaden Reservoir. Anderson Reservoir on Coyote Creek, historically the largest in the system, is currently offline for seismic retrofitting — the direct cause of the Stage 2 independent restriction. Its absence removes approximately 90,000 acre-feet of storage capacity from the local buffer.

The second component is imported water delivered via the Delta-Mendota Canal and the South Bay Aqueduct, originating from the Sacramento-San Joaquin Delta. This supply is subject to State Water Project allocations — currently set at 30% of requested amounts — and environmental pumping restrictions tied to Delta smelt and salmon protections.

The third component is the Santa Clara Valley Groundwater Basin, one of the largest groundwater basins in California. The district actively recharges this basin by spreading imported and local surface water in dedicated percolation ponds in Alviso, Coyote, and Rinconada areas. Recharged water is then pumped by wells operated by San Jose Water Company and other retailers. Water is treated at the Rinconada Water Treatment Plant and the Santa Teresa Water Treatment Plant before delivery to San Jose taps.

HOA rules during water restrictions

California homeowners are protected from HOA fines for brown or drought-stressed lawns during declared water shortage emergencies under Government Code § 65595 and the provisions reinforced by AB 2100. Under these statutes, an HOA cannot fine a resident for failing to irrigate landscaping or for allowing a lawn to go brown when a water agency — in this case Santa Clara Valley Water District — has declared a Stage 2 mandatory restriction. The protection applies as long as the resident is complying with the applicable watering schedule and not simply neglecting their landscape outside of restriction requirements.

If your HOA sends a violation notice related to lawn appearance while Stage 2 restrictions are in effect, respond in writing promptly. Keep a copy of the letter sent to your HOA and retain your water bills and any district communications as supporting documentation.

Template response letter:

"Dear [HOA Board / Property Manager]: I am writing in response to the violation notice dated [date] regarding the appearance of my lawn at [address]. Please be advised that Santa Clara Valley Water District has declared Stage 2 mandatory water restrictions, which limit outdoor irrigation to two days per week for my address. California Government Code § 65595, as amended by AB 2100, prohibits a homeowner association from imposing fines or penalties on a property owner for brown or drought-stressed landscaping when a local water agency has declared a water shortage emergency and compliance with watering restrictions would otherwise be required. I am in full compliance with Santa Clara Valley Water District's Stage 2 schedule. I respectfully request that this violation notice be rescinded. Please contact me if you require documentation of the applicable restrictions."

Lawn survival guide for San Jose

San Jose's Mediterranean climate — hot, dry summers and mild, wet winters — means the grasses that survive here are fundamentally different from what most lawn care guides assume. Cool-season turf like Kentucky Bluegrass, common in Northern states, is largely impractical in San Jose's valley heat. The grasses you're actually managing fall into a short list.

Under Stage 2, Tall Fescue — the most common residential lawn grass in San Jose — can survive if you shift irrigation practice entirely. Instead of frequent short cycles, water deeply on your two allowed days: run each zone long enough to wet the soil 6–8 inches down, then let it dry out completely before the next allowed day. Tall Fescue's deeper root system can access that moisture over several days. Raise your mower height to 3.5–4 inches during summer; taller blades shade the soil, dramatically reducing evaporative loss from San Jose's 90°F–100°F July and August temperatures.

Bermudagrass and UC Verde Buffalograss are the strongest candidates for San Jose homeowners considering turf replacement. Bermuda can go semi-dormant and brown under water stress, then bounce back aggressively when water is restored — a characteristic well-suited to multi-year drought cycles in the Santa Clara Valley. UC Verde Buffalograss, developed by UC Davis specifically for California's Mediterranean climate, requires as little as 25% of the water Tall Fescue needs and is now eligible for Santa Clara Valley Water District's lawn replacement rebate program. If your Tall Fescue is struggling under Stage 2, this is the practical long-term pivot.

Frequently asked questions

What days can I water if my San Jose address is odd or even?

If your street address ends in an odd digit (1, 3, 5, 7, or 9), you may irrigate on Monday and Thursday. If it ends in an even digit (0, 2, 4, 6, or 8), your allowed days are Tuesday and Friday. In both cases, you must water before 9 a.m. or after 5 p.m. Watering at any other time on allowed days, or on any day not listed, is a violation under Stage 2.

Why did Santa Clara Valley Water District declare Stage 2 independently — didn't the state already issue restrictions?

The Metropolitan Water District's Level 1 conservation notice in March 2026 applies to its 26 member agencies in Southern California. Santa Clara Valley Water District is not an MWD member and manages its own water portfolio. The district declared Stage 2 independently because Anderson Reservoir — its largest local reservoir at roughly 90,000 acre-feet — has been drained for seismic retrofitting and cannot serve as a supply or storage buffer. The state drought context tightens the picture, but the Anderson situation is the direct driver of the local mandatory restriction.

When will Stage 2 restrictions end in San Jose?

There is no fixed end date. Santa Clara Valley Water District has tied the Stage 2 restriction to the restoration of Anderson Reservoir to operational status, which depends on the completion of the dam seismic safety project. The timeline for that work has extended multiple times. Check valleywater.org for the most current project status and any changes to the restriction level.

Does Santa Clara Valley Water District use smart meters to catch violations?

Increasingly, yes. The district and retail partner San Jose Water Company are deploying Advanced Metering Infrastructure (AMI) smart meters across service areas. These meters transmit hourly or near-hourly consumption data, making it possible to identify accounts that show irrigation-level water use on restricted days or during the prohibited 9 a.m.–5 p.m. window. Complaint-based field patrols remain the primary enforcement mechanism today, but smart meter data is becoming a secondary enforcement tool. Filing a complaint about a neighbor's violation can be done through the district's website.

What rebates does Santa Clara Valley Water District offer for removing my lawn?

Santa Clara Valley Water District offers turf replacement rebates through its Lawn Be Gone program. The rebate pays per square foot of qualifying lawn removed and replaced with drought-tolerant landscaping, mulch, or low-water ground cover. UC Verde Buffalograss and California native plantings typically qualify. The specific rebate rate and program availability change periodically — check valleywater.org under the Water Use Efficiency section for the current per-square-foot amount and application process. Pre-approval before removal is required.

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

Yes. Drip irrigation systems are exempt from the day-of-week restriction under Stage 2. The rationale is efficiency: drip systems deliver water directly to root zones with minimal evaporative loss, which aligns with the district's conservation goals. However, drip systems must still avoid the 9 a.m.–5 p.m. hours restriction — or confirm with Santa Clara Valley Water District whether that hour restriction applies to drip in the current stage language. Hand watering with a shut-off nozzle is also exempt from day restrictions.

Can I fill my pool or top it off during Stage 2?

Filling a new pool is prohibited without a variance from Santa Clara Valley Water District. Topping off an existing pool to replace evaporation loss is generally permitted, but San Jose's hot inland summer temperatures — regularly exceeding 95°F in the South Valley — mean an uncovered pool can lose a quarter-inch or more of water per day to evaporation. The district requires pools to be covered to reduce this loss. If you don't have a pool cover, purchasing one is both a conservation requirement and a practical water-saving measure under Stage 2.

Can my HOA fine me for a brown lawn while Stage 2 is in effect?

No. California Government Code § 65595, strengthened by AB 2100, prohibits HOAs from fining residents for drought-stressed or brown lawns when a water agency has declared a mandatory water shortage restriction. Santa Clara Valley Water District's Stage 2 declaration qualifies. If you receive an HOA violation notice, respond in writing citing § 65595, reference the Stage 2 mandatory restriction, and state that you are in compliance with the district's watering schedule. Keep copies of all correspondence and your water bills as documentation.

What time can I water in San Jose?

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 San Jose?

First offense: Warning first. Repeat violations: Fines. Contact Santa Clara Valley Water District for the full enforcement schedule.

How do I report a water waste violation in San Jose?

Contact Santa Clara Valley Water District or visit https://www.valleywater.org. Most utilities accept online reports and respond within 48 hours.