EFFECTIVEConnecticutApr 29, 2021✓ Human reviewed

Connecticut moved shop floor-drain wastewater coverage into the MIU general permit

DEEP folded the Vehicle Maintenance Wastewater general permit into the Miscellaneous Industrial User (MIU) general permit, effective October 31, 2020; the old permit expired January 23, 2021. Repair shops, body shops and dealers registered under the old permit had until April 29, 2021 to file an MIU notification with their local POTW authority.

wastewaterfloor drainsgeneral permitPOTW
What to check

Shops discharging vehicle-maintenance wastewater to a sewer should confirm they filed the MIU GP notification with their POTW and keep separator maintenance and small-volume autobody records current.

Official evidence

Source and verification

Verified
Sep 21, 2026
Applies to
General mechanical, Collision / body, Mixed services, Dealership fixed ops
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