Region 1: EPA New England
Impaired Waters & 303(d) Lists
Under Section 303(d) of the CWA, states, territories, and authorized tribes (referred to as 'states' below) are required to develop, and update every two years, lists of waters - rivers, lakes, coastal waters and estuaries - that are impaired (or threatened) by one or more pollutants. Impaired waters are waters that do not meet Water Quality Standards (WQSs) even after point sources of pollution (e.g., municipal and industrial discharges) have installed required levels of pollution controls. In addition to listing impaired waters, each state prioritizes TMDLs for development.
States must consider "all existing and readily available information" when developing their lists. Along with the list, each state submits a listing methodology to EPA. At EPA's request, states must provide "good cause" for not including or removing a water from the list. To read the impaired waters lists for New England states please go to the links below under "New England State Pages."
EPA Listing Information:
- Guidance for Assessment, Listing, and Reporting Requirements Pursuant to Sections 303(d), 305(b) and 314 of the Clean Water Act
- EPA National TMDL Technical Support Documents
EPA Approval Documentation for the New England States' Impaired Waters/303(d) Lists
303(d) lists are organized by state and in chronological order, with the most recently approved impaired waters listed first. The tables will be updated continuously as lists are approved.
Many of the 303(d) list documents submitted to EPA by the States appear in their TMDL or 303(d) list web pages (links in the table below). Please note that the document that contains the 303(d) list may be labeled "Integrated Report", and that the 303(d) list itself may be found in an appendix part of the document.
You will need Adobe Reader to view some of the files on this page. See EPA's PDF page to learn more about PDF, and for a link to the free Acrobat Reader.
| Connecticut | State of Connecticut 303(d) list Web site  |
||
|---|---|---|---|
| List cycle | Partial approval date | Final/full approval date | Approval documents |
| 2010 | N/A | September 19, 2011 | Approval documents (PDF) (19 pp, 60K) |
| 2008 | N/A | November 4, 2008 | Approval documents (PDF) (36 pp, 658K) |
| 2006 | N/A | September 21, 2007 | Approval documents (PDF) (37 pp, 177K) |
| 2004 | N/A | June 24, 2004 | Approval documents (PDF) (12 pp, 49K) |
| Maine | State of Maine 303(d) Web site |
||
| List cycle | Partial approval date | Final/full approval date | Approval documents |
| 2010 | N/A | September 20, 2011 | Approval documents (PDF) (13 pp, 76K) |
| 2008 | N/A | August 21, 2008 | Approval documents (PDF) (10 pp, 68K) |
| 2006 | N/A | September 18, 2007 | Approval documents (PDF) (15 pp, 71K) |
| 2004 | May 9, 2005 | September 28, 2006 | Partial
approval documents (PDF) (9 pp, 493K) Final approval documents (PDF) (12 pp, 77K) |
| Massachusetts | State of Massachusetts 303(d) Web Site |
||
| List cycle | Partial approval date | Final/full approval date | Approval documents |
| 2010 | N/A | November 16, 2011 | Approval documents (PDF) (26 pp, 100K) |
| 2008 | N/A | May 4, 2009 | Approval documents (PDF) (18 pp, 72K) |
| 2006 | N/A | September 28, 2007 | Approval documents (PDF) (42 pp, 2.7MB) |
| 2004 | June 21, 2006 | February 6, 2007 | Partial
approval documents (PDF) (34 pp, 150K) Final approval documents (PDF) (8 pp, 283K) |
| New Hampshire | State of New Hampshire 303(d) Web site |
||
| List cycle | Partial approval date | Final/full approval date | Approval documents |
| 2010 | N/A | September 7, 2011 | Approval letter (PDF) (1 pg, 26K) Approval document (PDF) (12 pp, 4.7MB) |
| 2008 | N/A | September 30, 2009 | Approval documents (PDF) (21 pp, 1.5MB) |
| 2006 | N/A | August 30, 2007 | Approval documents (PDF) (22 pp, 87K) |
| 2004 | June 9, 2005 | September 13, 2005 | Partial
approval documents (PDF) (12 pp, 37K) Federal Register Notice (PDF) (4 pp, 15K) Follow up Letter (PDF) (2 pp, 13K) |
| Rhode Island | State
of Rhode Island 303(d) Web site |
||
| List cycle | Partial approval date | Final/full approval date | Approval documents |
| 2010 | N/A | July 14, 2011 | Approval documents (PDF) (18 pp, 114K) |
| 2008 | N/A | July 29, 2008 | Approval documents (PDF) (19 pp, 107K) |
| 2006 | N/A | November 17, 2006 | Approval documents (PDF) (12 pp, 43K) |
| 2004 | N/A | September 27, 2005 | Approval documents (PDF) (11 pp, 48K) |
| Vermont | State of Vermont 303(d) Web site |
||
| List cycle | Partial approval date | Final/full approval date | Approval documents |
| 2010 | N/A | June 15, 2011 | Approval documents (PDF) (13 pp, 62K) |
| 2008 | N/A | September 24, 2008 | Approval documents (PDF) (10 pp, 41K) |
| 2006 | N/A | March 1, 2007 | Approval documents (PDF) (12 pp, 744K) |
| 2004 | N/A | July 19, 2004 | Approval documents (PDF) (10 pp, 34K) |