Stormwater Management

Understanding stormwater and its role in our environment

Stormwater is water from precipitation, such as rain or melting snow. When this water does not soak into the ground or evaporate, it becomes stormwater runoff. In developed areas with hard, impervious surfaces — like driveways, parking lots, rooftops, walkways, and roads — stormwater runoff increases because the water cannot naturally soak into the ground.

As it flows over these surfaces, stormwater can collect pollutants such as litter, debris, leaves, pine straw, grass clippings, oil, grease, gasoline, fertilizers, pesticides, chemicals, dirt, and pet waste. This polluted runoff often enters the storm drainage system or flows directly into nearby water bodies — such as lagoons, ponds, wetlands, or coastal waters — without any treatment.

Contaminated stormwater runoff can harm the environment, negatively impacting plants, fish, shellfish, wildlife, and even human health, as these waters are often used for swimming, fishing, and recreation.

Stormwater plays a vital role in supporting both our environment and community well-being. It helps replenish our water supply and sustains the flow of groundwater and surface water, which are essential for healthy aquatic life and habitat. When managed effectively, stormwater also supports clean water for recreational activities — bringing both enjoyment and economic benefits to the community.

The Town is committed to protecting nearby water bodies and enhancing natural resources by improving water quality. This is achieved through the implementation of effective stormwater management practices, regulation of land development, collaboration with regional partners, and public education and outreach as part of its Stormwater Management Program.

Questions?

Contact the Stormwater Utility at stormwater@hiltonheadislandsc.gov or 843-341-602.

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