Environmental Rules in Connecticut (2026)

Connecticut DEEP issues a statewide MS4 general permit requiring municipalities to control stormwater discharges…

Chapter 275 of the Manchester Code of Ordinances regulates nonstormwater discharges into the Town's storm drainage…

New Haven, Connecticut bans dumping anything but stormwater into its municipal separate storm sewer system under Code…

Waterbury's Department of Public Works regulates every discharge into the city's municipal separate storm sewer system…

Bethel requires a stormwater management plan for most new development, including any residential project adding more…

Bridgeport requires compliance with its Storm Water Management Manual for any project disturbing 20,000 square feet of…

The City of Bristol requires any landowner whose property creates a long-term storm water problem, or any developer…

Danbury bans discharging anything but stormwater into its storm drain system and requires best-management practices to…

In the Town of Greenwich, Code of Ordinances Chapter 6, Article 2 bars any excavation, grading or filling that…

Hamden's sewer ordinance keeps storm water out of the sanitary system and sewage out of storm drains. Section 51.30…

No Hartford zoning permit, including for a parking lot, can allow untreated runoff to discharge directly into…

Meriden's sewer ordinance requires stormwater and other unpolluted drainage to go only into pipes designated as storm…

New Britain's Code of Ordinances designates the Board of Water Commissioners as the city's stormwater authority under…

Norwalk bans discharging anything but stormwater into its municipal storm drain system, wetlands or watercourses, and…

Ridgefield's stormwater ordinance, Chapter 308 of the Town Code, bans discharging anything but stormwater into the…

Stamford bans dumping anything but rainwater into its storm drains under Chapter 201, the city's MS4 ordinance…

The Stratford Zoning Regulations require a stormwater management plan with any development application in the Town of…

Adopted by the Town Council in 2018, West Hartford's Stormwater Management ordinance (Ch. 148) bans illicit discharges…

In the City of West Haven, Connecticut, Chapter 204 bars every discharge into the municipal storm drain system except…

Conn. Gen. Stat. Sec. 22a-329 requires every municipality to adopt soil erosion and sediment control regulations…

Manchester has no separate erosion-and-sediment-control ordinance; construction-site runoff is regulated instead under…

Bethel's zoning regulations require every development to control erosion and sedimentation during and after…

Bridgeport requires any project that disturbs 20,000 square feet of earth, or just 5,000 square feet in a flood-prone…

Any grading, stripping, excavating, or earth change in Danbury needs an erosion and sedimentation control permit from…

In the Town of Greenwich, an excavation, grading or filling permit application under Code of Ordinances § 6-213(a)(12)…

Hartford requires an approved soil erosion and sediment control plan before any grading or land-disturbing activity…

Any Meriden development disturbing more than half an acre must file a certified soil erosion and sediment control plan…

New Britain's Zoning Ordinance requires a certified soil erosion and sediment control plan before any land development…

New Haven requires a stormwater management plan for zoning applications involving a half-acre or more of land…

Norwalk requires a certified soil erosion and sediment control plan before any development that disturbs more than…

Ridgefield requires any earth-disturbing construction activity to follow the Connecticut DEP's 2002 Guidelines for Soil…

Stamford's Zoning Regulations require a Zoning Permit and Certificate of Zoning Compliance before regrading over 200…

Section 6.5 of the Stratford Zoning Regulations requires a soil erosion and sediment control plan with any development…

West Hartford requires a certified soil erosion and sediment control plan for any development disturbing more than half…

The City of Bristol has adopted Connecticut's flood and erosion control statutes, C.G.S. §§ 25-84 to 25-94, in full…

The Connecticut Coastal Management Act (Sec. 22a-90 et seq.) requires consistency review of all development within the…

Bridgeport requires a city engineer-approved site plan or development permit before any building work in a FEMA-mapped…

Hartford bans new parking, structures, and driveways inside any mapped floodplain, and within 30 to 50 feet of the…

Any development in a special flood hazard area of New Britain needs a floodplain management permit from the city…

Norwalk's Flood Hazard Zone regulation, Code § 118-1100, controls construction across every FEMA-mapped special flood…

Every new structure or substantial improvement in a Ridgefield Special Flood Hazard Area must be flood-resistant and…

New building or substantial improvement in a Stamford special flood hazard area needs a Flood Hazard Area Permit and…

In the Town of Stratford, Connecticut, no construction or development can begin in an area of special flood hazard…

In the City of West Haven, Connecticut, Chapter 111 makes the Planning and Zoning Commission the flood management…

Bethel's Floodplain Overlay Zone, set under § 118-5.1, requires a zoning permit before any construction or development…

Before any development activity begins in a Bristol special flood hazard area, Appendix D § 3.3 requires a floodplain…

Any construction or development in Danbury's mapped floodplain zones, including manufactured homes, needs a floodplain…

Hamden's Planning and Zoning Commission reviews every development permit issued within the town's Special Flood Hazard…

In the City of Meriden, a development permit must be obtained before any construction or development begins within an…

New Haven requires a Floodplain Development Permit before any grading, filling, construction or substantial improvement…

Waterbury's flood control chapter applies to every area FEMA maps as a special flood hazard, currently Zones A and AE…

In the Town of West Hartford, no structure, land use, landfill, excavation, paving or grading may begin in a special…

Boat anchorage and mooring are permitted as of right on New Britain's inland wetlands and watercourses, but dredging or…

Building a residential dock in Stamford requires Coastal Site Plan Review by the Zoning Board because the zoning…

In the Town of Fairfield, no vessel may be moored, anchored or docked in the Harbor Management Area without a current…

Anyone operating a marine dock in Greenwich, meaning a dock or floating facility that supplies fuel, provisions or paid…

Bethel caps mobile source engine idling at 10 minutes when the vehicle isn't moving, under § 105-3, with exceptions for…

Bridgeport caps motor vehicle idling at ten minutes while parked, enforced by police and air pollution control officers…

Norwalk bars any stationary vehicle engine from idling more than three consecutive minutes, with narrow exceptions for…

Stamford caps unattended vehicle idling at three consecutive minutes citywide under its noise code, with narrow…

In the Town of Stratford, Connecticut, no mobile-source engine may run for more than three consecutive minutes while…

Waterbury caps heavy-truck idling at ten minutes near homes. City Code § 97.05(9), part of the Noise Ordinance, bars…

In the City of West Haven, Connecticut, no mobile source engine can operate for more than three consecutive minutes…

In Norwalk's AE flood zones, new residential construction and substantial improvements must have the lowest floor…

In the Town of Stratford, Connecticut, new and substantially improved residential buildings in a flood hazard area must…

New or substantially improved homes in a Bethel flood hazard area must have their lowest floor, including any basement…

Bridgeport requires new and substantially improved residential buildings in mapped flood hazard areas to elevate the…

Bristol requires new residential construction and substantial improvements inside a special flood hazard area to…

Nonresidential buildings in Danbury's flood zones must have their lowest floor raised to the 100-year flood elevation…

In the City of Meriden, new and substantially improved residential structures in areas of special flood hazard must…

New Britain's Flood Damage Prevention ordinance requires new construction or substantial improvement of any residential…

New construction and substantial improvements in a New Haven flood hazard area must sit at least two feet above base…

Ridgefield requires new and substantially improved residential structures in a mapped flood hazard area to have the…

New construction and substantially renovated buildings in Stamford's special flood hazard areas must have their lowest…

New construction and substantial improvements in a Waterbury special flood hazard area must have the lowest floor…

West Hartford requires 2.0 feet of freeboard above the base flood elevation (BFE) in Town Code § 177-8: new…

In the City of West Haven, Connecticut, Chapter 111 makes the Director of Planning verify and record the actual…