City of New Haven

The City of New Haven has a CSO (Combined Storm/Sewer Overflow) system which it operates and maintains. In an effort to reduce overflows into the Long Island Sound, the Greater New Haven Water Pollution Control Authority is responsible for implementing a Combined Sewer Overflow Long-Term Control Plan (CSO-LTCP) in an effort to eliminate overflows to the Long Island Sound. The CSO-LTCP includes the continued separation of the storm and sanitary sewers in the City as well as a capture and treat program to minimize overflows.

The City of New Haven does not have a stormwater management ordinance at this point in time; however, New Haven was an elected municipality to participate in Public Act No. 07-154. This legislative act provided grant funding for the conduct of a stormwater authority pilot program including the legal authority to establish such a Stormwater Authority. Many recommendations emerged as a result of this study, including implementing post-construction stormwater management requirements and a stormwater utility structure.

Most of the current stormwater management activities are administered by various departments within the City with prime participants being the City’s Departments of Engineering and Public Works. These activities include planning and construction of capital improvements, regulatory compliance and managing maintenance operations for storm sewers, catch basins, pipes, culverts, and drainage channels.

City of New Haven Stormwater Management Plan

(4) Construction Site Stormwater Runoff Control 

This minimum control measure outlines procedures for minimizing polluted stormwater runoff from activities that  disturb one or more acres of land. In the City of New Haven, this is determined on a site by site basis.  

4.1 Implement, upgrade and enforce land use regulations to meet requirements of  MS4 general permit 

The City of New Haven enacted Soil Erosion and Sediment Control regulations (SESC) in June 1993 in accordance  with the provisions of Public Act 83‐388 entitled “An Act Concerning Soil and Erosion and Sediment Control” and  Sections 8‐2 and 8‐25 of the Connecticut General Statutes. These regulations are in Section 58 of the Zoning  Ordinance. A copy of these regulations is available at the following website  (   The City of New Haven will confirm and revise its land use regulations, as necessary, to establish the legal authority  to control stormwater runoff from construction sites by requiring: 

a. developers, construction site operators, or contractors maintain consistency with the 2002 Guidelines for  Soil Erosion and Sedimentation Control, as amended, the Connecticut Stormwater Quality Manual, and all  stormwater discharge permits issued by the DEEP within the municipal or institutional boundary pursuant  to CGS 22a‐430 and 22a‐430b; 

b. the implementation of additional measures to protect/improve water quality (in addition to the above  requirements) as deemed necessary by the City of New Haven; 

c. the City is authorized to carry out all inspection, surveillance and monitoring procedures necessary to  determine compliance with municipal regulations, ordinances or programs or institutional requirements  related to the management of the City’s MS4. Inspections shall be conducted, where allowed, to  inventory the number of privately‐owned retention ponds, detention ponds and other stormwater basins  that discharge to or receive drainage from the permittee’s MS4;

d. the owner of a site seeking development approval from the City shall provide and comply with a long  term maintenance plan and schedule to ensure the performance and pollutant removal efficiency of  privately‐owned retention ponds, detention ponds and other stormwater basins that discharge to or  receive discharge from the City’s MS4 including short‐term and long‐term inspection and maintenance  measures to be implemented by the private owner; and 

e. the City of New Haven will control, through interagency or inter‐jurisdictional agreements, the  contribution of pollutants between the permittee’s MS4 and MS4s owned or operated by others. 

4.2 Develop and implement plan for interdepartmental coordination of site plan  review and approval

The City of New Haven has a formal site plan review that occurs approximately every 2 or 3 weeks to review  proposed site development plans. Site Plan Review is attended by members of multiple city departments including City Plan Department, Engineering Department, Building Department, Parks Department, and Transportation,  Traffic, and Parking Department. All site plans are reviewed by the site plan review committee prior to their  approval to go in front of the City Plan Commission. 

4.3 Review site plans for stormwater quality concerns  

The City of New Haven conducts site plan reviews that incorporate consideration of stormwater controls or  management practices to prevent or minimize impacts to water quality on sites with soil disturbance of one half  acre or more.  The City of New Haven will also conduct site inspections to assess the adequacy of the installation,  maintenance, operation, and repair of construction and post construction control measures and take enforcement  action when necessary. 

4.4 Conduct site inspections 

The City of New Haven will perform construction site inspections and take enforcement actions if necessary to  ensure the adequacy of the installation, maintenance, operation, and repair of all construction and post‐ construction runoff control measures.   

4.5 Implement procedure to allow public comment on site development  

New Haven’s procedure for public involvement in proposed and ongoing development and land disturbance  activities is as follows:  

The City Plan Commission may determine that public hearing is necessary for any SESC Plan. The Commission has discretions for determining when to require a public hearing; one factor is the receipt of public comments on a  SESC Plan. If a public hearing is required, then public notice will be placed in the newspaper in accordance with  SESC regulations. The applicant is also required to give written notice to adjacent land owners within 200 feet. All  applications, maps, and documents related to the public hearing shall be open for public inspection at the City Plan  Department at least 15 days prior to the public hearing.