Next, the water goes to either the Bon Tempe Treatment Plant on Mt. Tam or the San Geronimo Treatment Plant in Woodacre for further processing. The water is then treated to control corrosion. Since passage of a voter referendum in 1972, fluoride has been added to reduce tooth decay. The water we import from the Russian River is naturally filtered in the deep sand and gravel below the river bed and requires no further clarification. This water enters the MMWD system at our Ignacio treatment facility, where water quality is monitored continually.
Final treatment is similar to that used at our two reservoir water treatment plants.
We continue to look for ways to improve water quality. In 1995 we joined the Partnership for Safe Water, a voluntary program sponsored by the U.S. Environmental Protection Agency and the American Water Works Association. Copyright 1998 Marin Municipal Water District. All rights reserved.