The Town of Prescott Valley is a participant in the federally mandated National Pollution Discharge Elimination System (NPDES) Phase II, which is intended to help prevent storm water pollution from entering the storm drain system and protect the quality of our creeks and lakes. This program is implemented through the Arizona Department of Environmental Quality, Permit Number AZG2002-002.
Storm Water Pollutants
It is estimated that nationwide, over half the pollutants in our creeks and lakes are transported by storm water runoff from impervious surfaces (parking lots, roads, etc.) through storm drain systems and into our lakes and creeks. These pollutants include gasoline, by-products, oil, grease and heavy metals deposited by automobiles as well as industrial and chemical wastes. Fertilizers running off lawns and into storm drain systems are also a primary concern. These pollutants threaten the quality and usability of our surface water resources and control efforts are needed to reduce pollution sources and improve the quality of water discharged from storm drain systems.
Where Storm Water Goes
Runoff from storm events is a part of the natural hydrologic process. Rainwater that does not infiltrate into the ground, evaporate, or that is not used by plants will flow into lakes, creeks and ditches.
As runoff moves downhill, natural vegetated depressions and other features slow the flow of water and remove some pollutants and sediments. However, in Prescott Valley, existing vegetation and topography often have been altered, graded or paved and storm water is diverted into our lakes through creeks, ditches, scuppers, drainpipes and other diversionary features. Storm water that flows through Prescott Valley to receiving waters is called "urban runoff."
How You Can Help
We are not always aware of the items removed by storm water and introduced into our waterways. Daily activities that you may not have considered harmful have been shown to add to poor water quality. Take a look at the Best Management Practices (BMPs) to find ways you can help reduce pollutants entering our creeks and lakes.