Unlike sanitary sewage, most stormwater is not treated. It flows across the ground, into storm drains, pipes and ditches, and then directly into streams, ponds, lakes and rivers. Stormwater is often polluted with sediment, bacteria, nutrients, heavy metals, chemicals, and many other pollutants that are left or dumped on the ground and in the path of stormwater runoff. Stormwater pollution can be controlled if everyone plays a part in keeping pollutants off the ground and out of our stormwater systems’ drains and pipes. Please read on to learn more about stormwater pollution, its impacts on our waterways, and what you can do to prevent pollution.