In Madera all storm drains flow to rivers and creeks, detention and retention basins but never to the Waste Water Treatment Plant. Never dispose of any waste down the storm drain.
Urban runoff pollution is caused by chemical and other materials that are poured or washed down storm drains. The water passing through storm drains is NOT cleansed by the Waste Water Treatment Plant. Storm water never treated for pollutants.
Types of Pollutants Motor oil, pesticides, automotive fluids, chemicals and other litter find their way into our storm drains every day. One quart of used motor oil can contaminate 250,000 gallons of water. Animals living in our local sloughs, creeks, rivers, lakes and bay get their water from our storm drain system. Polluted water could cause these animals to become sick.
Ways to Prevent Pollution Maintain your vehicle... 
Inspect and maintain your car regularly to prevent and repair leaks. Recycle used oil and filters at one of the 10 convienent used oil recycling centers. Use kitty litter and sweep up leaks and spills. Never wash spills into the gutter. Reduce automible use by carpooling, biking and walking. When it rains, air pollution turnes into storm water pollution! Do not park your vehicle on the lawn.
All vehicles must be parked on cement, base rock or asphalt. Violaters may be cited.Recycle your used motor oil...
Paint with care...
Use latex paint rather than oil base. Unwanted oil-based paint, varnishes, and used thinner must be taken to a household hazardous waste collection event. Save and reuse thinner whenever possible. Empty and dry paint cans can be disposed of in the garbage. Never wash paints or equipment into the street or in your yard; rinse your paint brushes in the sink.