DEEP: Total Maximum Daily Load

Total Maximum Daily Load (TMDL)

A TMDL is a tool Water Quality Managers use to address water quality problems. TMDLs provide the framework for restoring impaired waters by establishing the maximum amount of a pollutant that a waterbody can take in without adverse impact to fish, wildlife, recreation, or other public uses.

TMDL Fact Sheet (PDF)

Statewide Bacteria TMDL (EPA approved September 2012; additional estuary appendices approved September 2013)

Proposed TMDL Analyses

Final TMDL Analyses

Regional TMDL Analysis for Mercury


 

Proposed TMDL Analyses

A proposed TMDL analysis is a draft document in the process of being adopted.

Pawcatuck River Watershed, Stonington, North Stonington, CT etc. 10 water body segments are impaired by indicator bacteria.  These segments include 6 freshwater streams and 4 estuary pieces in Long Island Sound.
Daily Load Calculations for Fecal Coliform Amendment to Statewide Bacteria TMDL Core Document Statewide
Mill River, Fairfield, CT
Actions to be taken to address water quality impairments.
 

Final TMDL Analyses

A final TMDL analysis is one that has been adopted by CT Department of Energy and Environmental Protection and approved by the federal Environmental Protection Agency.

Allen Brook Pond, Allen Brook, Gay City Pond, and Schreeder Pond
New Haven, Tolland, and Middlesex Counties
(PDF, 2548K)
Batterson Park Pond
Farmington and New Britain
Final - November 22, 2004
(PDF, 1887K)
Belden Hill Brook
Wilton
Final - May 21, 2000
(PDF, 567K)
Cedar Pond
North Branford
Final - November 28, 2005
(PDF, 3604K)
Deep Brook
Newtown
Eagleville Brook
Mansfield
(PDF, 618K)
East Branch Salmon Brook and Mountain Brook, Hartford County 
Ekonk Brook Plainfield,Sterling, Voluntown
Factory Brook
Salisbury
Final - September 30, 1999 (PDF - 1064K)
Hayden Creek
Clinton
Final - February 1, 2002
(PDF, 283K)
Hockanum River, Hartford County
Kenosia Lake
Danbury
Final - July 23, 2004
(PDF, 625K)
Linsley Pond
Branford
Final - November 28, 2005
(PDF, 435K)
Limekiln Brook
Danbury
Final - June 6, 2002
(PDF, 630K)
Long Island Sound
CT and NY
Final - December 2000
(PDF, 329K)
Mattabesset River Regional Basin
Hartford/Middlesex and New Haven Counties
Final - June 1, 2005
(PDF, 2453K)
Mill River, Rooster River, and Sasco Brook
Bridgeport, Fairfield, and Westport
Naugatuck River Regional Basin
Litchfield and New Haven Counties
Norwalk River Regional Basin
Fairfield County
Pequabuck River, Hartford and Litchfield Counties
Quinnipiac River Regional Basin New Haven and Hartford Counties
Rainbow Brook and Seymour Hollow Brook
Windsor Locks and Windsor
Final - October 15, 1999 (PDF, 2033K)
Sasco Brook
Fairfield and Westport
Southport Harbor, Long Island Sound: Westport, Fairfield area
Steele Brook
Watertown
Final - December 2000
(PDF, 496K)
Still River, Fairfield and Litchfield Counties Final - July 2010 (PDF, 30MB)
Titicus River
Ridgefield
Transylvania Brook
Southbury
Final - February 22, 2001
(PDF, 571K)
Upper Naugatuck River
Thomaston
Final - March 2005
(PDF, 892K)
Upper Willimantic River
Stafford
Final - April 25, 2001
(PDF, 382K)

Final Regional TMDL analysis, adopted by CT Department of 
Energy and Environmental Protection and other Northeastern States and approved by the federal Environmental Protection Agency.

Northeast Regional Mercury Total Maximum Daily Load (TMDL) Final TMDL Analysis - December 20, 2007, (PDF, 664K)
 
Content last updated May 28, 2014