Stormwater Management

The Town of New Canaan’s Public Works Department would like to remind residents that it’s everyone’s responsibility to protect our water courses. That’s because storm drains and roadside ditches lead directly to our ponds and rivers. So, any oil, pet waste, leaves, trash, or dirty water from washing your car that enters a storm drain gets into our water courses. 

With 20,000 people living in New Canaan, we all need to be aware of what goes into our storm drains.

Swimming Pool Discharge

2017 Stormwater Management Plan -  The 2017 Stormwater Management Plan is available for review.
E-mail Public Works with comments. 

Outreach Education for Connecticut's Municipal Officials & Local Communities
NEMO (Nonpoint Education for Municipal Officials) provides information, education and assistance to local land use officials and other community groups on how they can accommodate growth while protecting their natural resources and community character. 

NEMO is a part of the Center for Land Use Education and Research (CLEAR) and the Department of Extension at the University of Connecticut College of Agriculture and Natural Resources. 

Mercury Toxic, Persistent, Preventable
Mercury, a useful but toxic metal, is being phased out of many industrial and consumer uses. 
However, some mercury can be released to the environment from consumer items discarded 
as solid waste and from mercury dumped down household drains. 

Considering acceptable alternatives to mercury and responsible handling of mercury-containing wastes will help keep mercury out of the environment. 

The Town of New Canaan Public Works Department wants you to prevent mercury from contaminating our environment by: 

1. Reducing your use of mercury containing items 
2. Recycling what you can 
3. Disposing of ALL mercury waste properly--------you can keep mercury out of the water and the atmosphere. 

Please view this important link:   
Impacts of Feeding Canadian Geese and the Improper Disposal of Pet Waste

Annual Stormwater Report
Upon request a  draft copy of the most recent Annual Stormwater Report is available for review. 
To request review please e-mail  

Town Code Chapter 52 - Stormwater Quality Management 

Keep sewage out of our stormdrains!

Click here for more information

What you can do to prevent Stormwater Pollution

Urban Stormwater Runoff , Click here for link 

Keep litter, pet wastes, leaves, and debris out of street gutters and storm drains--these outlets drain directly to lake, streams, rivers, and wetlands. 
Apply lawn and garden chemicals sparingly and according to directions. 
Dispose of used oil, antifreeze, paints, and other household chemicals properly, not in storm sewers or drains. If your community does not already have a program for collecting household hazardous wastes, ask your local government to establish one. 
Clean up spilled brake fluid, oil, grease, and antifreeze. Do not hose them into the street where they can eventually reach local streams and lakes. 
Control soil erosion on your property by planting ground cover and stabilizing erosion-prone areas. 

Property Management , Click here for link 

Encourage local government officials to develop construction erosion/sediment control ordinances in your community. 
Have your septic system inspected and pumped, at a minimum, every 3-5 years so that it operates properly. 
Purchase household detergents and cleaners that are low in phosphorous to reduce the amount of nutrients discharged into our lakes, streams and coastal waters.

Manage animal waste to minimize contamination of surface water and ground water. 
Protect drinking water by using less pesticides and fertilizers. 
Reduce soil erosion by using conservation practices and other applicable best management practices. 
Dispose of pesticides in an approved manner.

Stormwater Brochure
Click here to download the Stormwater Brochure.

Lawn Care Brochure

What the Public Works Department is Doing
Yearly the Town of New Canaan Public Works Department in conjunction with the Town’s Engineering Department sampled 6 (six) stormwater outfalls. These outfalls represented the business district and residential area outfalls. They also represented stormwater that discharged into the Five Mile River and the Silvermine River. 

The Public works Department also worked diligently in sweeping the Town’s roads and cleaning and marking the catch basins.

Five Mile River Study Presentation to the Board of Selectmen 10/6/2009
The Five Mile River Study, prepared by Milone & MacBroom, is summarized on the following slides. A presentation will be made at a Public Meeting sometime in early November. The date, time, and place will be posted on the Website and in the newspapers. 

Part 1               Part 2