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Health Advisory

Last updated: October 16, 2017, 1:40 pm

How to help North Bay Wildfire Victims:

Wildfire relief organizations prefer monetary donations at this time. For safety reasons, and to avoid blocking emergency traffic, please don’t bring donations to areas affected by wildfires.

Places to donate in Contra Costa:

The Bay Area Air Quality Management District has declared a health advisory due to heavy smoke from the North Bay Fires. For more information visit http://www.baaqmd.gov/

RMP - Martinez Water Treatment Plant

Martinez, CA


The purpose of the City of Martinez Water Treatment Plant (MWTP) is to disinfect and filter the water that is used by the general public. The main chemicals used in the treatment process are sodium hypochlorite, anhydrous ammonia, aluminum sulfate, ozone, caustic soda, polymer, activated carbon, and fluoride. Anhydrous Ammonia is used to assist in the disinfection of the water.

For additional information regarding this facility's operations and most recent audit results, please view the Audit Summaries | Spanish (PDF).

Regulated Substances Subject to CalARP/Federal RMP/ISO:

Regulated Substances Program Level CalARP Regulated Federal RMP Regulated ISO Regulated
Anhydrous Ammonia 2 yes no no