As runoff water from rainfall, excess irrigation or hosing off driveways and sidewalks flows across driveways, sidewalks and streets it transports grass clippings as well as other pollutants such as fertilizer, trash, leaves, dirt into street storm sewers. These storm sewers carry the runoff water and pollutants directly to a creek or river.
Grass clippings are a source of phosphorus which can trigger algae and rooted plant growth in streams. An overabundance of algae in a creek can lead to water quality problems and reduced recreational opportunities. Lawn fertilizer is another source of phosphorus.
Here are some best management practices to keep these pollutants from getting into our creeks and rivers:
Mow often enough to leave grass clippings on the lawn.
Sweep grass clippings off of paved areas. Place them on the lawn or in a compost pile.
Sweep up fertilizer spills and misapplications and re-apply them to the lawn.
Mow so that grass clippings are blow back onto the lawn instead of the sidewalk, driveway or street.
Using these best management practices will help to contribute to clean water and a healthy environment.
