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ACWD Baseline Conservation – verify current stage at acwd.org

Fremont Water Restrictions 2026

Alameda County · California

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Restrictions Active - ACWD Baseline Conservation – verify current stage at acwd.org

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Days/Week

Anytime – but mid-day irrigation discouraged

Allowed Hours

Drought surcharges suspended; permanent water-waste rules carry up to $100 per occurrence

Max Fine

Find Your Watering Day

This city assigns watering days by property location, not by address digit. Find your assigned days in the table below.

Watering schedule by property location
Property LocationWatering Day
No fixed day-of-week schedule under ACWD baselineYear-round water-waste rules apply; emergency ordinance may activate
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Reset Your Sprinkler Timer
  1. Press and hold the left arrow button for 2 seconds to enter programming mode
  2. Set current day and time first
  3. Set start time to your allowed hour (e.g. 8:00 PM)
  4. Set run time per zone (15–25 minutes for most lawns)
  5. Set watering days to your assigned day ONLY - deselect all others

Allowed Watering Hours

Anytime – but mid-day irrigation discouraged

ACWD rescinded its Water Shortage Emergency Ordinance in 2023 after wet winters refilled regional supplies, but California's permanent year-round water-waste rules remain in force: no irrigation within 48 hours of measurable rainfall, no irrigation runoff onto sidewalks or streets, no spraying hardscape with potable water, hoses must have shut-off nozzles, decorative fountains must recirculate. ACWD can re-activate the Water Shortage Emergency Ordinance at any board meeting if regional conditions deteriorate – verify current status at acwd.org/WSEOrdinance before assuming this page is up to date.

Still Allowed

💧 Hand Watering

Allowed with shut-off nozzle. Hours: Any day with a shut-off nozzle.

🌿 Drip Irrigation

Exempt from day-of-week limits. Must follow allowed hours.

Fines & Enforcement

Drought surcharges suspended; permanent water-waste rules carry up to $100 per occurrence

ACWD does not currently impose drought surcharges (these were rescinded in 2023). California's permanent water-waste rules remain enforceable through ACWD code enforcement and the City of Fremont Code Enforcement office for visible violations; first detected violation typically draws a written warning, repeat violations up to $100 per occurrence. If ACWD reactivates the Water Shortage Emergency Ordinance, drought surcharges and per-violation fines will reapply per the ordinance schedule.

Citations begin Drought ordinance rescinded 2023 · baseline rules permanent

🏠 HOA Rules During Restrictions

California Water Code §10631.5 and Civil Code §4735 prohibit HOA fines for drought-compliant brown lawns during a declared shortage and protect homeowners who reduce irrigation. These protections fully apply if ACWD declares a Water Shortage Emergency. Under ACWD's current baseline (no formal emergency), the protections still cover any landscape change made for water conservation, but document the state-level conservation framework if your HOA challenges a brown lawn.

If your homeowners association sends a violation notice for a dormant or brown lawn during the current restriction period, respond in writing citing the applicable law and include a copy of the current restriction order from Alameda County Water District. Most HOAs will rescind the notice once they are made aware of the legal protections in place. If the issue persists, contact your county’s code enforcement division for assistance.

Why These Restrictions Exist

Fremont is served by the Alameda County Water District (ACWD), a California special district that supplies water to roughly 350,000 residents across Fremont, Newark, and Union City – the so-called Tri-City area of southern Alameda County. ACWD is NOT a Metropolitan Water District (MWD) member and is NOT part of EBMUD; it operates a fully independent framework with three distinct source supplies.

ACWD's source water mix

  • Niles Cone Groundwater Basin (local aquifer in the Niles district)
  • Hetch Hetchy Aqueduct purchase from the San Francisco Public Utilities Commission (SFPUC)
  • State Water Project deliveries through the South Bay Aqueduct

This three-source diversification makes ACWD more drought-resilient than single-source utilities, and it is why the framework is independent of both MWD's Colorado River + SWP-only system and EBMUD's Mokelumne-only system.

ACWD declared a Water Shortage Emergency in 2021–2022 with a 15% reduction goal across the Tri-City area, then rescinded the ordinance in 2023 after wet winters restored Bay Area supplies. ACWD remains at baseline (no formal emergency) as of the most recent reporting; verify at acwd.org before making major irrigation decisions.

Fremont is home to the Tesla Fremont Factory (the company's California assembly plant) – a major industrial water user with its own commercial water account. Fremont includes the historical Niles, Centerville, Mission San Jose, Warm Springs, and Irvington districts, each with distinctive landscape character but all on the same ACWD framework.

Rainfall Deficit: Bay Area precipitation tracking near normal · ACWD diversified supply mitigating regional drought risk

This deficit has accumulated over the current water year and represents a significant departure from historical averages for the Fremont area. Water supply reservoirs and aquifer levels are well below seasonal targets, necessitating mandatory conservation measures.

How to Keep Your Lawn Alive During Fremont Water Restrictions

11 tips tailored for Fremont homeowners during ACWD Baseline Conservation – verify current stage at acwd.org restrictions.

ACWD is currently at baseline (no formal Water Shortage Emergency) – but California's permanent year-round water-waste rules still apply: no runoff, no hardscape hosing, no irrigation within 48 hours of rain.

Verify ACWD's current stage at acwd.org/WSEOrdinance before assuming this page is up to date – the Water Shortage Emergency Ordinance can be reactivated at any board meeting.

Bay Area cool-summer climate makes Tall Fescue + drought-tolerant California-Friendly groundcovers a strong combination – much less stressed than Central Valley fescue.

Inland Fremont neighbourhoods (Mission San Jose, Warm Springs) are slightly hotter than coastal-influenced Niles and Centerville – adjust irrigation accordingly.

ACWD's regional turf-replacement rebate ($1.50–$3/sq ft, up to 1,000 sq ft per parcel) is the primary program – apply at acwd.org 'Conservation' before removing turf.

Niles Cone Groundwater Basin is a major regional aquifer; ACWD's recharge facilities along Alameda Creek keep basin levels stable through dry years.

Install a smart controller (Hunter, Rain Bird, Rachio) with a rain sensor – ACWD rebates cover up to $80 on WaterSense-labeled controllers.

Mulch all ornamental beds 3 inches deep with arborist wood chips – Bay Area clay-loam benefits from mulch and chips are typically free from local tree services.

Drip-irrigate all trees, shrubs, and vegetable beds – drip is exempt from any future stage-based day-of-week limits and uses 30–50% less water than overhead spray.

Replace any narrow grass strips between sidewalk and street with low-water California-Friendly groundcovers – these strips are the lowest-use, highest-visibility turf removal opportunities.

Track monthly water use at acwd.org 'My Account' – if ACWD reactivates the Water Shortage Emergency Ordinance, the framework typically asks for a 15% reduction across the Tri-City service area.

Fremont Water Restriction FAQs

What days can I water my lawn in Fremont?
Your watering day in Fremont depends on your property location. No fixed day-of-week schedule under ACWD baseline can water on Year-round water-waste rules apply; emergency ordinance may activate. You are limited to 0 days per week during the current ACWD Baseline Conservation – verify current stage at acwd.org restrictions.
What hours can I run my sprinklers in Fremont?
Under the current restrictions, sprinkler irrigation in Fremont is only allowed during the following hours: Anytime – but mid-day irrigation discouraged. ACWD rescinded its Water Shortage Emergency Ordinance in 2023 after wet winters refilled regional supplies, but California's permanent year-round water-waste rules remain in force: no irrigation within 48 hours of measurable rainfall, no irrigation runoff onto sidewalks or streets, no spraying hardscape with potable water, hoses must have shut-off nozzles, decorative fountains must recirculate. ACWD can re-activate the Water Shortage Emergency Ordinance at any board meeting if regional conditions deteriorate – verify current status at acwd.org/WSEOrdinance before assuming this page is up to date. Watering outside these hours, even on your scheduled day, is a violation and may result in a citation.
What are the fines for water violations in Fremont?
ACWD does not currently impose drought surcharges (these were rescinded in 2023). California's permanent water-waste rules remain enforceable through ACWD code enforcement and the City of Fremont Code Enforcement office for visible violations; first detected violation typically draws a written warning, repeat violations up to $100 per occurrence. If ACWD reactivates the Water Shortage Emergency Ordinance, drought surcharges and per-violation fines will reapply per the ordinance schedule. The Alameda County Water District (ACWD) and local Alameda County enforcement officers conduct patrols and respond to complaints. Keep your irrigation timer set to your assigned day and hours to avoid citations.
Can I install new sod or seed in Fremont during restrictions?
ACWD has no current restriction on new turf installation under baseline. ACWD's regional turf-replacement rebate pays $1.50–$3/sq ft (depending on funding cycle) up to 1,000 sq ft per residential parcel – apply at acwd.org 'Conservation' before removing turf. The rebate amount has varied year-to-year; verify current cap.
When will water restrictions end in Fremont?
The current ACWD Baseline Conservation – verify current stage at acwd.org restrictions in Fremont are effective from Drought ordinance rescinded 2023 · baseline rules permanent Until ACWD declares a new water shortage emergency. However, the restrictions may be extended if drought conditions persist or eased if significant rainfall improves water supply levels. Monitor the Alameda County Water District (ACWD) website for updates.
I'm in Newark or Union City but ACWD is my provider – same Fremont rules?
Yes. ACWD serves Fremont, Newark, and Union City – the Tri-City area of southern Alameda County. The same framework applies across all three cities because they all draw from the same three-source ACWD supply (Niles Cone groundwater, Hetch Hetchy purchase from SFPUC, and South Bay Aqueduct State Water Project deliveries). Your retail bill comes from ACWD directly regardless of which Tri-City you live in. ACWD's 15% reduction goal during emergencies applies across the entire Tri-City service area, not to individual customer accounts. If you cross the boundary into Hayward (Hayward Public Works Department), Pleasanton (Pleasanton Public Works), or San Jose / Milpitas (San Jose Water Company / Santa Clara Valley Water District), you're on different utilities with different frameworks.
Tesla Fremont factory – industrial water allocation?
The Tesla Fremont Factory (the company's main California EV assembly plant on Fremont Boulevard) holds a separate commercial water-supply account with ACWD. Industrial process water (paint shop water, cooling-tower makeup, parts washing, deionised water for battery cell processing) is governed by ACWD commercial water-use ordinances and the facility's own water-management plan, not by the residential framework. Tesla has invested in process-water recycling and recovery systems that reduce per-unit-vehicle water demand substantially since the factory opened in 2010. Landscape irrigation at the factory perimeter follows the same ACWD baseline rules as residential customers – the permanent water-waste rules apply. If ACWD reactivates the Water Shortage Emergency Ordinance, the 15% reduction target would apply to Tesla's overall account, with conservation specifics negotiated through ACWD's commercial-customer engagement process.
Niles Cone aquifer + Hetch Hetchy + SWP – three water sources, one framework?
Yes. ACWD's three-source diversification is one of the most distinctive features of any Bay Area water utility. About 35–45% of ACWD's annual supply comes from the Niles Cone Groundwater Basin (local aquifer recharged primarily by Alameda Creek runoff captured at the Quarry Lakes recharge facilities); roughly 30–40% comes from the Hetch Hetchy Regional Water System (a wholesale purchase from SFPUC, who delivers Tuolumne River water from the central Sierra); and roughly 20–35% comes from State Water Project deliveries through the South Bay Aqueduct (Sacramento–San Joaquin Delta water). The actual mix shifts year-to-year based on hydrology, costs, and water quality. From a customer perspective, you don't choose your source – ACWD blends the three at the treatment plant and delivers a single supply through your tap. The single Water Shortage Emergency framework covers all three sources because a deep drought eventually constrains every Bay Area surface and groundwater supply. ACWD's 2021–2022 declaration was triggered when Hetch Hetchy and SWP allocations both fell sharply, even though Niles Cone basin levels remained stable.

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