In cooperation with the Regional Water Quality Control Board and National Park Service and Inverness Public Utility District, the Tomales Bay Foundation monitors water quality at 14 fresh and salt water sites in the Tomales Bay Watershed. This program was started in 2007 by the Tomales Bay Watershed Council and continues today as managed by the Foundation. State certified labs provide analysis of fecal coliform counts at the sites shown on the map below. In addition we analyze turbidity, pH, temperature, salinity and other variables. This project has continued (mostly) monthly since 2004 with testing at weekly intervals during some summer and winter months. Here are the East Side Tomales Bay and Inverness test results for Fecal Coliform
A map of sampling locations is provided above.