Serving Water Systems & Reclaimed Water Systems throughout Sonoma County, California
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Water Systems
Water Systems
Carmet-by-the-Sea Mutual Water System
and Sereno Del Mar Water Company

Carmet-by-the-Sea Mutual Water System, a non-profit corporation, and Sereno del Mar Water company, a private investor-owned water company, now operate a joint water source treatment and storage system.

Carmet-by-the-Sea Mutual Water Company
This water system is located on Highway 1. The water source consists of two side hill wells. This water system receives treated surface water from the adjacent Sereno Del Mar Water Company. Additional information is included below with the Sereno Del Mar Water Company.

Sereno Del Mar Water Company
This water system is located along the Sonoma County coast on Highway 1 between Jenner and Bodega Bay. The system was established in 1970 when the Sereno Del Mar subdivisions were developed. In 1976 the Gleason Beach Assessment District was added to the service area.

This private water system serves 124 customers and has issued 170 water permits. The original subdivision developed 190 parcels. It is owned by Russian River Utility. Water rates, policies and regulations are determined by the California Public Utilities Commission (CPUC).

The California Public Utilities Commission approved a transfer of stock to Russian River Utility in October 1999. The water company is now a California corporation with all stock held by Russian River Utility.

A 212,000-gallon storage tank and source wells were financed with new connection fees. Therefore, the established rate base is low so the return on the investment is also low.

Russian River Utility received a $250,000 low-interest loan from the State Revolving Fund to finance the renovation of the surface water treatment plant. The construction was completed in 2001. The treatment plant consists of a state-of-the-art micro-filtration membrane facility.

The adjacent Carmet-by-the-Sea Mutual Water Company secured a United States Department of Agriculture (USDA) loan in the amount of $140,000 to consolidate the water treatment services at Sereno Del Mar. Carmet services are now connected to the 300,000-gallon Sereno Del Mar storage tanks and are served filtered water.

Sereno Del Mar Water Company and Carmet-by-the-Sea Mutual Water Company are managed separately but have consolidated the treatment and storage facilities.

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Water Conservation Tips
  • Reduce irrigation by 10 to 20%.
  • Find and repair leaks now.
  • Inspect and tune up irrigation system monthly.
  • Irrigate between midnight and 6AM to reduce water loss from evaporation and wind.
  • Water landscape by hand during evening hours.
  • Use a broom, not a hose, to clean driveway, deck or patio.
  • Use a bucket and a hose with an automatic shut-off nozzle when you wash the car, or take your car to a carwash that recycles water.
  • Cover pools and hot tubs to reduce evaporation.
  • Use front-loading washing machines.
  • Run the dishwasher and washing machine with full loads only.
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