From the University of Colorado at Boulder:
State and federal agencies task the office of Environmental Health and Safety at CU Boulder with ensuring everyone on campus does their part to keep our water clean by preventing chemical waste and other pollutants from being disposed of into storm drains and sanitary sewer lines.
As a large, eco-conscious community at CU Boulder, we have the great opportunity to become educated and work together to reduce our impact on stormwater. Small amounts of contaminants from all over the landscape add up to cause pollution in our water. It is important to remember even the little things matter. You will make a difference, no matter how small, if you can adopt simple habits and change the way you look at water quality.
A few important tips to keep in mind include:
Do not dispose of chemicals down the drain. Report anything suspicious or unusual around stormwater. Clean up after your pets, and do not litter. Do not maintain or wash your car in public areas, where runoff will easily flow to storm water. Be aware.