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Water Rules

phoenix low water level

With reservoirs at historic lows, Marin Water's board of directors declared a water shortage emergency and adopted mandatory water use restrictions to help preserve our water supply. The goal of the mandatory restrictions is to achieve a 40 percent reduction in water use districtwide. We are monitoring drought conditions carefully and additional restrictions will be added as needed. 

Water Use Restrictions 

  • Spray irrigation is limited to one day a week. Each community has a designated watering day. If you are unsure whether you are located in unincorporated Marin County, click here to find out. Spray irrigation on Saturday and Sunday is not allowed. Designated watering days are:
Monday Tuesday Wednesday Thursday Friday

• Ross

• Tiburon

• Belvedere

• San Geronimo

• Forest Knolls 

• Lagunitas

• San Rafael

• All other unincorporated areas in Marin County

• San Quentin

• Sausalito

• Corte Madera

• San Anselmo

• Mill Valley

• Woodacre

• Larkspur

• Fairfax

• Greenbrae

• Kentfield

  • Drip irrigation is limited to any two days per week. 
  • We recommend turning off your irrigation system and spot watering by hand, only when necessary. Spot watering can be done on any day of the week.
  • Outdoor watering is prohibited between 9 a.m. and 7 p.m. to prevent evaporation.
  • Covers are required for all pools and spas. Liquid pool covers are acceptable. 
  • Do not wash vehicles at home. Use a carwash that recycles water instead.
  • Do not power wash homes or businesses.
  • Do not wash driveways or sidewalks.
  • Do not waste water. Flooding gutters is prohibited.
  • Leaks must be fixed within 48 hours of being discovered.
  • Garden hoses must have a shutoff nozzle.
  • Golf course irrigation is restricted to greens and tees.
  • Do not water grass on public medians.
  • Do not use potable water for dust control, compaction, sewer flushing or street cleaning.
  • Do not refill or top off decorative fountains.

(Note: Recycled water for irrigation is exempt) 

Education and Enforcement

The district is focused primarily on education to help the community reduce water use and will rely on customers to follow the rules. However, not following the water use restrictions listed above will result in a written warning. The second violation will result in a $25 fine, and any subsequent violations will result in a $250 fine.

Variances

The district may grant exemptions or variances due to hardship, emergency conditions affecting health and safety, or to pursue an alternative means of compliance. For more information, call 415.945.1520. To request a variance, email Variance@MarinWater.org with a detailed explanation as to the reason(s) you are requesting a variance.

Water Waste

If you see water waste, please let us know. You can report is using this online form, email Conservation@MarinWater.org, or call 415.945.1523. 

We find in most water waste cases, the person or business is unaware of the problem and appreciates a neighborly alert. You can download our printable notice and share it with your neighbor to remind them of the water use restrictions.

*Please Note: The USPS does not allow any flyer, letter, or document to be placed in mailboxes. 

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