Stormwater runoff from homes, businesses and public facilities can be a significant source of pollution to the nation's waters, including our creeks and the Napa River. In 1987 Congress began to address this problem by requiring cities and counties to obtain National Pollutant Discharge Elimination System (NPDES) permits. The NPDES permits require cities and counties to develop and implement programs to control the discharge of pollutants both during construction and after the development is completed. Similar permit requirements were required for some industrial facilities (e.g., wineries) and construction sites larger than one acre. A new, much more complex General Construction Permit came into effect on July 1, 2010.
See a list of local contractors who can provide design, installation and compliance monitoring services for your project.
You can learn more about BMPs and local requirements for Construction Site Runoff Control and Post-Construction Runoff Management by using the quicklinks on the left.