What is Stormwater?
Stormwater is rain that falls onto impervious cover, such as streets, roofs, and driveways, picks up pollutants that are on those surfaces, and carries the pollutants into the street storm drain system and on into our streams. Those pollutants include, but are not limited to, oil, fertilizers, bacteria, heavy metals, gasoline, and sediment. A great stormwater control measure in highly urbanized areas, such as San Antonio, is low impact development (LID).
Did You Know? In San Antonio, stormwater does not drain into a sanitary sewer system. It flows directly into our creeks and rivers primarily from the street storm drain system.
What is Low Impact Development?
Low Impact Development (LID) is a sustainable land planning and design approach that manages stormwater on site. Examples are rain gardens, stormwater harvesting cisterns, and permeable pavement.
Maintains or enhances on-site natural features to drain the site and manage pollutants after development
- Reduce impervious cover and / or disconnect impervious areas from the storm drain / stream network.