DCEPA-AdministeredSWPPP Requirements in District of Columbia
The District of Columbia does not hold NPDES permitting authority, so the federal EPA Construction General Permit administered by EPA Region 3 in Philadelphia governs construction stormwater discharges. However, the more operationally significant compliance layer for most DC construction projects is DC's own Department of Energy and Environment (DOEE) Stormwater Management Program, which imposes green infrastructure and on-site retention requirements that go well beyond the federal CGP baseline. DC's Stormwater Management Guidebook (most recently updated 2013, with ongoing amendments) requires projects disturbing 5,000 sq ft or more to retain the first 1.2 inches of rainfall on-site through green roofs, permeable pavement, bioretention, or other approved practices. The Anacostia River watershed, which covers much of eastern DC, is subject to a TMDL and MS4 permit that drives aggressive nutrient and sediment load reduction requirements. Contractors working in DC frequently find that DOEE's post-construction requirements are the dominant design driver—the construction-phase SWPPP/CGP compliance is a parallel but secondary concern.
District of Columbia SWPPP Key Facts
- ✓EPA Region 3 (Philadelphia) administers the federal CGP—DC has no NPDES state authorization
- ✓DOEE Stormwater Management Guidebook requires on-site retention of 1.2 inches for projects disturbing 5,000+ sq ft
- ✓Anacostia River TMDL drives strict nutrient and sediment load reduction requirements in eastern DC
- ✓Green infrastructure requirements (green roofs, bioretention, permeable pavement) are mandatory for most large projects
- ✓Two separate compliance tracks: federal CGP (EPA Region 3) + DOEE stormwater retention (DC DOEE)
Administering Agency
- Agency
- EPA Region 3 (Philadelphia) (EPA Region 3)
- Phone
- 215-814-5000
- r3public@epa.gov
Permit Details
- Permit Name
- EPA 2022 Construction General Permit (CGP)
- Permit Number
- CTR100000
- Effective Date
- 2022-02-17
- Expiration Date
- 2027-02-16
- Permit Document
- View Current Permit
SWPPP Thresholds & Triggers
- Acreage Threshold
- 1 acre of land disturbance, or less than 1 acre if part of a larger common plan of development
DC does not have NPDES authorization—the federal CGP applies. However, DC's Department of Energy and Environment (DOEE) administers a separate, highly stringent Stormwater Management Guidebook requiring on-site stormwater retention for most projects. The Anacostia River watershed receives special attention under the DC MS4 permit and Anacostia TMDL.
Inspection Requirements
- Inspection Frequency
- At least once every 7 calendar days and within 24 hours of a qualifying storm event of 0.25 inch or more
- Rain Event Threshold
- 0.25 inch in a 24-hour period
- Certified Inspector
- Not required by state
While the federal CGP applies for NPDES purposes, DC's DOEE Stormwater Management Guidebook requirements are arguably the more complex compliance layer. Projects disturbing 5,000 sq ft or more must comply with DC's Green Area Ratio, on-site retention volume requirements, and post-construction stormwater management plan requirements—all administered by DOEE separately from EPA Region 3.
Penalties & Enforcement
- Max Civil Penalty (Per Day)
- $25,000–$37,500 per day per violation (federal EPA enforcement)
- Criminal Penalties
- Federal CWA criminal penalties apply under EPA Region 3 jurisdiction
EPA Region 3 handles federal NPDES enforcement. DOEE enforces DC's own stormwater management requirements independently and has issued significant fines for green infrastructure and retention volume non-compliance on large development projects.
Permit Fees
- NOI Filing Fee
- $0 (federal CGP)
- NOT Filing Fee
- $0
- Other Fees
- DOEE stormwater management plan review fees apply; DC imposes stormwater retention fees on large impervious surface projects that fail to meet on-site retention targets.
How District of Columbia Differs from Federal Requirements
- ⚠DC IS the federal program for NPDES—EPA Region 3 administers the CGP directly with no DC state modifications.
- ⚠DC's DOEE stormwater retention requirements (1.2-inch on-site retention) are far more stringent than anything in the federal CGP.
- ⚠Green infrastructure mandates (green roofs, bioretention) are DC-specific requirements with no federal CGP equivalent.
SWPPP Tips for District of Columbia
- ➤Engage DOEE early—DC's stormwater retention plan review can take months and often requires design revisions before approval.
- ➤Do not conflate the EPA CGP compliance (construction phase) with DOEE stormwater management (design and post-construction)—they are separate programs with separate submissions.
- ➤The Anacostia watershed boundary roughly follows the eastern half of DC; know which watershed your site drains to before designing your stormwater management approach.
- ➤Budget for green infrastructure capital costs—DC's 1.2-inch retention requirement frequently requires green roofs or underground cisterns on tight urban sites where bioretention isn't feasible.
District of Columbia SWPPP FAQs
Does DC have its own stormwater permit?+
No for NPDES purposes—EPA Region 3 administers the federal CGP in DC. However, DC's DOEE administers a separate, comprehensive stormwater management program under DC law that requires on-site retention and green infrastructure for most disturbing projects. Both programs apply concurrently.
What is the DC Stormwater Management Guidebook?+
A technical manual published by DOEE that specifies design standards for stormwater retention practices required for projects disturbing 5,000+ sq ft. It governs green roof design, bioretention sizing, permeable pavement specifications, and the overall 1.2-inch on-site retention requirement.
Who enforces stormwater rules in DC—EPA or DOEE?+
Both. EPA Region 3 enforces the federal CGP for construction-phase discharges. DOEE enforces DC's own stormwater management requirements for on-site retention, post-construction management plans, and green infrastructure maintenance.
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