Mississippi SWPPP inspection requirements
- Rain trigger
- 0.5″ storm event
- Post-rain deadline
- Within 24 hours
- Routine inspections
- Every 7 or 14 days
- Permit
- Large / Small Construction General Permit
- Agency
- Mississippi Department of Environmental Quality (MDEQ)
Verify against your permit. These values reflect the most common reading of Mississippi's program; permits change and projects vary. The official permit text from MDEQ controls.
How Mississippi handles construction stormwater
Construction sites in Mississippi disturbing one acre or more need coverage under the Large / Small Construction General Permit, administered by Mississippi Department of Environmental Quality.
Inspector qualifications
A qualified person designated by the operator. Check the current state permit for certification requirements.
Official sources
Common questions
What triggers a SWPPP inspection in Mississippi?
Under the Large / Small Construction General Permit, a storm event of 0.5 inches or more triggers a post-storm inspection, generally due within 24 hours (non-work days typically extend to the next work day; check your permit). Routine inspections run every 7 or 14 days.
Who can perform SWPPP inspections in Mississippi?
A qualified person designated by the operator. Check the current state permit for certification requirements.
Who administers the construction stormwater program in Mississippi?
Mississippi Department of Environmental Quality (MDEQ) administers the NPDES construction stormwater program in Mississippi under the Large / Small Construction General Permit.
What are the penalties for SWPPP violations in Mississippi?
Federal Clean Water Act civil penalties can reach $68,445 per day per violation, and MDEQ can issue administrative orders and state penalties on top. Missing rain-triggered inspections is among the most commonly cited violations in stormwater audits.
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