Watershed · by major or minor

Minor dischargers discharge permits in subbasin 21010004

• 130Permits
• 169Permits in the subbasin
• 1States the subbasin touches

130 of the 169 Clean Water Act discharge permits in hydrologic subbasin 21010004 are filed as Minor dischargers. A subbasin is a watershed unit, not a political one, so it crosses state lines: this one is named on permits in PR.

Where the subbasin lies

• PR 169 permits in the subbasin

Other cuts of subbasin 21010004

• permit type: General permit coverage 128
• program: Storm Water Construction 64
• program: Storm Water Industrial 47
• permit type: Individual permits 35
• major or minor: Major dischargers 8
• permit type: Associated permit records 6
• program: Biosolids 6

Every discharge permit in subbasin 21010004 →

Figures from EPA’s ICIS-NPDES download.