The division is in the process of renewing the general permit for Water Treatment Plant Wastewater Discharges (COG641000). This permit was last renewed on November 1, 2005 and has been administratively continued and remains in effect beyond the expiration date of October 31, 2010. The general permit covers discharges of wastewater from drinking water treatment plants such as filter backwash water, to surface waters of the state and/or groundwater that is hydrologically connected to surface water. For this renewal, the division conducted a stakeholder process that included public meetings on March 14, 2023, April 5, 2023, June 6, 2023 and April 2, 2024. All current permittees were invited to participate in the stakeholder engagement process. Once a draft of the general permit is complete, it will be noticed for public comment in 2025. Following the public comment period, the division will respond to public comments in writing and make any applicable changes to the draft. Then the division will issue the final general permit and begin the process of renewing all the existing permit certifications. For more information, consult the division’s webpage about the COG641000 updates.
➽ Engineering Section and Clean Water Program Permits Section
