Water Quality Permits

Stormwater runoff from land and impervious areas such as paved streets, parking lots, and building rooftops during rainfall and snow events often contain pollutants that could adversely affect water quality. National Pollutant Discharge Elimination System permits are required for stormwater discharges to surface waters from construction and industrial activities and municipalities if stormwater from rain or snow melt leaves your site through a "point source" and reaches surface waters either directly or through storm drainage.  A point source is a natural or human-made conveyance of water through such things as pipes, culverts, ditches, catch basins, or any other type of channel.

1200-C Construction Stormwater General Permit

Effective Dec. 15, 2020 through Dec. 14, 2025    


Presentation: Implementing the Renewed 1200-C NPDES Construction Stormwater General Discharge Permit

Public Notice of NPDES Construction Stormwater General Permit 1200-C Permit Applications
Lists 1200-C applications for projects that disturb 5 acres or more of land and are currently in the 14-day (10 business days) public review period. Includes locations for reviewing documents and information on where to send comments.


Technical assistance


For more information,visit our contacts page for the local DEQ office or agent.

For information on 1200-CN and CA permits, visit 1200-C Series Construction Stormwater Permits for Government Agencies.