Clean Water Program: Common Pollutants
Last modified: 3/11/2013 9:20 AM
Oil and grease from automotive leaks and spills or improper disposal of automotive products.
Metals and hydrocarbons found in motor vehicle exhaust, brake and tire wear, paint, metal plating and motor oil.
Pesticides, herbicides and fertilizers from lawns, gardens, farms and improper disposal.
Soil erosion from lawns, hillsides and construction activities
Biological contaminants from animal waste and cross connections, and leaks or overflows from sanitary sewers and septic tank systems. (Call the local sanitary district or city public works department for sewer overflows and the County Department of Environmental Health
(408) 918-3400 for septic tank system discharges.)