Stormwater Information

The City of Norwich invites you to participate in our ongoing efforts to clean our community and protect our water resources.  The Department of Public Works announces the availability of the City’s Storm Water Management Plan.  This Plan was developed and is announced in accordance with the Connecticut Department of Energy and Environmental Protection’s (CTDEEP).
Copies of the plan are available for review in the Department of Public Works offices during normal business hours and digitally on our website.  Comments should be submitted, in writing, by email to or by mail at the address found below. 

Water Permitting and Enforcement Division
79 Elm Street
Hartford CT 06106

Attn: Karen Allen

There are several resources available to help understand the requirements:


Every year the City of Norwich is required to submit to DEEP an MS4 report to document the City efforts to protect the integrity of the City Stormwater and to apply different control measures as outlined in the MS4 application. The MS4 report also called General Permit for the Discharge of Stormwater from Small Municipal Separate Storm Sewer Systems was issued January 20, 2016 and became effective July 1, 2017.  Please review the 2021 MS4 report.


The City of Norwich would like to encourage all residents to help us in improving the integrity of our Stormwater by not dumping anything in the catch basins. Remember the drain is for the rain. You can also protect our stormwater by not feeding ducks and geese at Brown Park, Mohegan park or anywhere else in the City where birds congregate. Feeding ducks and geese is not only detrimental to the birds and our stormwater but could also pose a health threat to the feeder engaging in this activity. Do not overfertilize your lawn and switch to an organic fertilizer instead. Do not fertilize before a rain event. Pick up after your dog. Dog feces can cause e-coli and it is responsible for our swimming areas to be closed for weeks during the year. Do not wash your car in the street or in your driveway but rather take it to a car wash where the grey water is treated before being release to our MS4. If you choose to wash your car at home do it on your lawn. If you witness any illicit dumping activities please give us an anonymous call at (860) 823-3798. We are grateful for citizens who have called us when witnessing neighbors even businesses dumping gas, cooking oil and/or motor oil in our catch basins. We are also grateful for students and teachers who want to partner with us to keep our rivers clean. Click here for additional useful tips.


 The City of Norwich is working tirelessly to disconnect 2% of our impervious surfaces as mandated by DEEP. Impervious surfaces are artificial surfaces like asphalt and concrete pavements, roads, parking lots, driveways, roofs and anything else that prevent the rain water to go back to the earth as it is supposed to. Impervious surfaces causes more runoff to end up in our rivers. On the way to the rivers, stormwater carries pollutions like dog feces, lawn fertilizers etc. ..All this pollution causes our rivers to become impaired and could even cause Asphyxia or dead zone. These are places in the river that is so polluted that marine life can not survive. We believe together as a city we can achieve the mandated 2% disconnection goal. We encourage developers and home owners to familiarize themselves with our  Low Impact Development Publication.  Please send us pictures to show us how you are implementing Low Impact Development concepts in your designs. Also send us pictures to show us how you are reducing your impervious surfaces. Together we can disconnect 2% impervious surfaces annually!
JP Laguerre, Civil engineer, MS4 Coordinator
50 Clinton avenue, Norwich CT 06360
(860) 823-3798