Stormwater is precipitation that includes rain and snow melt that comes in contact with the ground and drains to a nearby body of water. The water is collected on surfaces including rooftops, parking lots, and the ground. Rain often goes directly to a storm drain that discharges to a local pond or river.

During drainage water comes in contact with pollutants like oil and grease, pesticides, sediments, and other waste. EH&S manages runoff to reduce or eliminate pollution discharge potential.