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National Pollution Discharge Elimination System Resources

Runoff from rain is regulated under the NPDES permit program.

Runoff from rain storms
carries pollution to local

Baltimore County, a Phase One jurisdiction, defined by a population greater than 100,000 and 11 industrial categories, is required to obtain five-year permits for stormwater discharge. Pertinent Federal, State and local resources include:


General Discharge Permit

Maryland Department of the Environment reissued the General Permit for Storm Water Discharges from Industrial Activities; General Permit Number 12-SW, effective January 1, 2014.

Related Topics

Contact Information

Watershed Management and Monitoring
Phone: 410-887-5683
Fax: 410-887-4804

Revised August 3, 2015


Revised April 6, 2016        

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