Integrated Water Quality Report to Congress

Prepared Pursuant to Clean Water Act Sections 305(b) and 303(d)

The FINAL 2022 Connecticut Integrated Water Quality Report is now available. The public comment period has closed. Responses to submitted comments are now available.

New!!! Web mapping application to view and download IWQR information! As a result of previous public input, this cycle we have developed an online web mapping application that will allow the public to view and download assessment and TMDL information for the 2020 and 2022 cycles. We will continue to use this web application for future cycles.

Web Mapping Application for CT DEEP 305 (b) and 303 (d) Programs.

Every two years (sometimes referred to as a cycle) Connecticut submits the Integrated Water Quality Report to Congress (IWQR). The report covers two sections of the Clean Water Act (CWA), 305 (b) and 303 (d).

Section 305(b) of the Federal Clean Water Act (CWA) requires each State to monitor, assess and report on the quality of its waters relative to designated uses established in accordance with the Connecticut Water Quality Standards  

Section 303(d) of the CWA requires each State to list waters not meeting water quality standards and prioritize those waters for Total Maximum Daily Load (TMDL) development or other management plans for restoration or protection.  

Before each IWQR cycle is finalized and submitted to EPA, CTDEEP conducts an informational meeting and offers an opportunity for the public to review and comment on the report for at least 30 days after the report is public noticed.

Connecticut Integrated Water Quality Report 2022 FINAL Documents

IWQR 2022 Received Comments 
Exhibit    Submitted By     
 1 Paul Aresta, Council On Environmental Quality
 2 Alicea Charamut, Rivers Alliance of Connecticut
 3 Jean Pillo, Eastern Connecticut Conservation District
 4 Patrick Kearny, Manchester Water and Sewer Department


Previous IWQR Documents

DEEP Water Quality Planning Information Listserv

The Connecticut Department of Energy and Environmental Protection uses the Department web site to provide information about topics pertaining to water quality based programs within Connecticut.  If you would like to receive notice of water quality program updates by e-mail, please subscribe to the Water Quality Planning (WQP) Information listserv.  Each time the web site is updated with materials relative to water quality based programs, you will receive an email notification with a link to the pertinent web page. To remove your name from the listserv, follow the unsubscribe steps outlined below.

How to Subscribe to the WQP Listserv

If you have an e-mail signature, header, and/or footer set up to be automatically included in emails, you will need to delete these before sending the subscribe request.  Send an email to 

Leave the subject line blank and in the body of the message type:

Subscribe DEEP_WQPlanning YourFirstName YourLastName

Substitute your first and last name in the text above when sending.  You will receive an e-mail confirmation that you have successfully subscribed to the listserv. 


How to Unsubscribe to the WQP Listserv

Requests to unsubscribe must be sent from the same email account used when subscribing to the email list.  Send an e-mail to LISTSERV@LIST.CT.GOV  Leave the subject line blank and in the body of the message type:

Unsubscribe DEEP_WQPlanning YourFirstName YourLastName 

Substitute your first and last name in the text above when sending.  You will receive an e-mail confirmation that you have been removed from the listserv.  

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Content last updated February 23, 2022