All customer facing DEEP services have returned to normal business operations. For detailed information on what this means, visit our “New Normal” website: DEEP New Normal Information

Town of Ridgefield, WPCA

Notice of Tentative Determination to Approve NPDES Permit Renewal and Modification

Applicant: Town of Ridgefield
Application No. 201815568
City/Town: Ridgefield

The Commissioner of the Department of Energy and Environmental Protection (“DEEP”) hereby gives notice that a tentative determination has been reached to approve the following application.


Applicant’s Name and Address:Town of Ridgefield, 66 Prospect St., Ridgefield, CT 06877


Contact Name and Phone No.:  Amy Siebert, WPCA Chairperson – (203) 431-2734


Type of Permit and #: NPDES – CT0100854


Type of Facility:Domestic Wastewater Treatment


Facility Location:South Street WWTF, 22 South Street, Ridgefield


Facility design capacity: 1.0 million gallons per day (MGD)


Upgraded Facility design capacity: 1.12 million gallons per day (MGD)



The applicant has previously received a permit from the Department of Energy and Environmental Protection (“Department”) authorizing the discharge of up to an annual average daily design flow of 1.0 million gallons a day of advanced treated municipal wastewaters to the Great Swamp. The applicant has submitted an application to renew and modify its existing permit from 1.0 MGD to 1.12 MGD to allow for 0.12 MGD of flows from the existing Rte. 7 wastewater treatment facility (WWTF) which will be decommissioned once the upgrade to the South Street WWTF is completed.This modification and renewal application is the subject of this notice.



The Department has prepared a draft permit consistent with the tentative determination to approve the Town of Ridgefield’s modification and renewal application.  This draft is available on the public participation section of the Department’s website. In accordance with Sections 22a‑430‑4(l) and 22a-430-4(r) of the Regulations of Connecticut State Agencies (RCSA), the draft permit contains effluent limitations that meet Connecticut’s Water Quality Standards for the following: Aquatic Toxicity, Biochemical Oxygen Demand (5 day), copper, Escherichia coli, pH, ammonia nitrogen, total phosphorus, total suspended solids, ultraviolet light disinfection intensity and zinc.



This application has been assigned No. 201815568; please use this number when corresponding with DEEP regarding this application. Interested persons may obtain copies of the application from the applicant at the above address. Due to the ongoing COVID-19 virus pandemic, the Department of Energy and Environmental Protection located at 79 Elm Street, Hartford, CT is closed to the public until further notice. However, electronic copies of the application and supporting documentation can be provided to interested persons via email. Any such requests for electronic documents may be directed to Christopher Falk of the Municipal Wastewater Section at


Before making a final decision on this application, the Commissioner shall consider written comments on the application from interested persons.  Written comments on the application should be directed to Christopher Falk via electronic mail to no later than thirty (30) days from the publication date of this notice.  Written comments may also be submitted in paper form to the Department of Energy and Environmental Protection located at 79 Elm Street, Bureau of Water Protection and Land Reuse, Hartford, CT. In this submittal please identify the name of the staff assigned to the application, the permit application number and your phone number and/or email address to facilitate responses to your comments. Due to the COVID-19 virus pandemic and social distancing measures implemented by DEEP staff, there could be delays in the response to your comments. You may contact the staff person identified in this notice with any questions you may have.



The Commissioner may conduct a public hearing if the Commissioner determines that the public interest will best be served thereby, or shall hold a hearing upon receipt of a petition signed by at least twenty-five persons. Petitions for a hearing shall be submitted within thirty (30) days from the date of publication of this public notice and should include the application number(s) noted above and also identify a contact person to receive notifications.  Petitions should also identify a person who is authorized to engage in discussions regarding the application and, if resolution is reached, withdraw the petition. In order to facilitate the filing of requests for hearing during the COVID-19 emergency and consistent with the Department’s Temporary Directive, the Office of Adjudications will accept electronically-filed petitions in addition to petitions submitted by mail. Petitions with required signatures may be filed by email to or mailed to the DEEP Office of Adjudications, 79 Elm Street, Hartford, CT 06106. Within thirty (30) days of filing the petition, original petitions that were filed electronically must be also be mailed to the Office at the above-noted address. If the original petition exists only in electronic format or signatures were produced using a computer or typewriter, the petition must be submitted with a statement bearing the wet-ink signature of the petitioner that the petition is only available in that format and has been submitted to satisfy the requirement that an original petition be filed. If a hearing is held, timely notice of such hearing will be published in a newspaper of general circulation and posted on the DEEP website at Additional information at

/s/Jennifer L. Perry, P.E.,Director
Water Planning and Management Division
Bureau of Water Protection and Land Reuse


Published in the Danbury News-Time on October 8, 2021.

Draft Permit

Fact Sheet