Both MassDEP and US EPA regulate stormwater in Massachusetts. In addition municipalities may have local drainage, sewer, wetland or other ordinances that regulate stormwater.

Construction Disturbing One or More Acres

NPDES construction general permit: Web site
How General Permits Work: Web page
Stormwater Definitions: Web page
Phase II Help: Web page
Outstanding Resource Waters: 314 CMR 4.00: Web page
BRP WM 08 and BRP WM 09: Web page

Discharges from Regulated Small Municipal Separate Storm Sewer Systems (MS4s)

Phase II communities: Web page
How General Permits Work: Web page
US EPA NPDES General Permit for Stormwater Discharges from Small MS4s (see "General Permit for Storm Water Discharges..." under the heading "Small MS4 Program): Web site
Stormwater Definitions: Web page
Phase II help: Web page

Industrial Activity

Stormwater Definitions: Web page
How General Permits Work: Web page
EPA Industrial Stormwater page: Web site
SIC Codes: Web site
No Exposure Exclusion: Web site
Outstanding Resource Waters: Web page
BRP WM 08B and BRP WM09: Web page

Large and Medium Municipalities

Stormwater Definitions: Web page
EPA Stormwater Phase I page: Web site

New Construction and Reconstruction In or Near Wetlands

Wetlands Protection Act: Web site
Wetlands Protection Act Regulations: Web page
SWM Policy and Handbooks: Web page

Surface Water Discharges

Permit Application Kit (BRP WM 0809): Web page
Surface Water Discharge Regulations: Web page

Surface Water Discharges to Outstanding Resource Waters (ORWs)

Massachusetts Water Quality Standards: Web page