. >>> there is new alarming report out there on the health of the san fransco bay and what is in the. all sorts of chemicals. leigh glaser reports. >> water flows through diamond canyon, down to 580 and 880 and here intthe bay. >> this is where rain water from the creek watershed enters the bay. what is being done to enter the bacon tians high levels of pcp's and pesticides. >> there is legacy of pcb's but come to the level that make many fish unsafe to eat. >> sto drains and 15 industrial areas around the bay, waterways near richmond and san pablo were found to be heavily polluted. and the creek in san pab le, but they say the communy has tried to help. >> stu that you would see normally floatin around the creek has been cleaned up. >> plastic bags are another polluter. neighbors living next to this creek restored the creek side with nati plants. it will reduce the amount of contaminants dowtream. >> as the water slows down, all the sedime that is carryi will be able to slow down and fall out in suspension and gets trapped. so all the contaminants that are attached to it are al trap