COG641000 - Water Treatment Plant Wastewater Discharge General Permit

inside a wastewater treatment plant

In 2023, the division will be working on the renewal of COG641000. The renewal process will include a stakeholder engagement process to gain feedback about potential changes to the COG641000 general permit. All current permittees will be invited to participate in the stakeholder engagement process. Following the stakeholder feedback process, the division will release a draft COG641000 renewal permit that includes an additional opportunity to provide input via a public comment period. After the public comment period, the renewal permit will be issued, and the division will begin the process of renewing and re-issuing all existing permit certifications.

How to get involved



The renewal of the COG641000 general permit for discharges of Wastewater from Water Treatment Plants is in progress. The division is hosting stakeholder meetings to discuss updates and gather input.

Sign up to receive notifications about this effort, and scroll down to select “Permits - Water Treatment Plant Discharges."


All meeting materials are stored in this public folder. 

Scheduled meetings - Register to attend on Zoom

  • Tuesday, April 2, 2024 | 10:30 a.m. to 12 p.m.

Previous meetings:

  • Thursday, June 6, 2023 | 2 to 3:30 p.m. 
  • Wednesday, April 5, 2023 | 10 to 11:30 a.m.
  • Tuesday, March 14, 2023 | 10 to 11:30 a.m.


For information or questions related to the COG641000 permit renewal process, contact: