With the urbanization of the landscape the volumes of pavement great volumes of stormwater runoff occur during regular rain events. Stormwater Infiltration helps to minimize runoff and in some cases eliminate runoff altogether. Some municipalities have a dual use sewer and stormwater system and during large storms the treatment systems overload and raw sewage, waste, and street borne hydrocarbons are poured directly into our river systems. Many areas have now adopted an “MS-4 Designation” which is a serious commitment to reducing these discharges to our watersheds.