For those out of the US EPA is the environmental protection agency.
I was reformatting my chemical plants for insertion into my mapping database and I remembered that the EPA was a wonderful source of information.
For example water sources
selector
http://www.epa.gov/enviro/html/sdwis/sdwis_query.html
details
http://oaspub.epa.gov/enviro/sdw_que...al_rows_found=
The full chemical information I pulled is in DBF format which is hard to open unless you have the right programs. I have attached a zipped csv version if anyone is interested.
Here is another potential data source
state selector
http://www.epa.gov/air/data/geosel.html
California Facility Emissions Report
http://www.epa.gov/air/data/netemis....~CA~California
If you chose all the pollutants you get over 9500 returns of polluters in California. Many would not be useful (like dry cleaners) but others might (sawmills, petroleum terminals, telephone equipment and semiconductors manufacturers, etc). I am still trying to decide what to do with this data so I will attach an example in csv format.