What is storm water?
Storm water is water that does not soak into the ground. During heavy precipitation, storm water runoff is made up of water along with pollution or sedimentation that finds its way to our rivers and streams. Urban areas consist of many different impervious surfaces that increase storm water runoff, such as sidewalks, roads, and other concrete or asphalt paved areas.
Why is it important to limit storm water runoff?
Pollution that is washed away with storm water drains into our water systems without being treated. Much of the storm water runoff in Nashville eventually reaches the Cumberland River, which is a source of our drinking water. Storm water runoff can pollute our waterways, making them an unhealthy place for all kinds of life.
How does the MCC limit storm water runoff?
One way we are lessening the amount of contaminated water reaching our rivers and streams is by collecting it via our Green Roof. Underneath the 4 acres of sedum vegetation, storm water flows into our underground 360,000 gallon cistern. The water is then reused throughout the facility in 500 toilets and urinals, as well as our irrigation systems for our outdoor landscaping. When partnered with low-flow technology, collecting rain water lessens storm water runoff and minimizes our municipal water usage significantly. Last fiscal year we collected:
