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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 new mandatory water use restrictions on April 20 to help preserve our water supply. The goal of the mandatory restrictions is to achieve a 40 percent reduction in water use districtwide. 

Water Use Restrictions 

  • Spray irrigation is limited to no more than two days per week.
  • Drip irrigation is limited to no more than three days per 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.

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. 

We offer free water-saving fixtures including hose nozzles, faucet aerators and showerheads. Check your toilets for leaks with our leak detection dye tablets. Email to request your fixtures and tablets. We also have rebates available to help offset the cost of high efficiency washing machines, smart irrigation controllers, graywater systems, and more. 

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.


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 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 or call 415.945.1523.