Animal waste collection is an at-the-source control of pollution. Stormwater runoff often contains fecal bacteria due to pet wastes. This bacteria poses health risks to humans and other animals, and results in the spread of disease. Pet waste can also cause eutrophication of lakes. Eutrophication is where weed and algae growth on a lake surface interfere with the photosynthetic processes of the plants below them. This leads to reduced oxygen levels in the water, which harms fish and other aquatic organisms.
To prevent fecal contamination of stormwater and lakes, clean up after your dog. Always carry a plastic bag with you when you walk your dog, and do not dispose of your pet waste in storm drains.