Connecticut Stormwater Quality Manual

The Department of Energy and Environmental Protection and the Connecticut Council on Soil and Water Conservation have collaborated to prepare the revised for the Connecticut Guidelines for Soil Erosion and Sediment Control and the Connecticut Stormwater Quality Manual (below). The effective date for these guidance documents is March 30, 2024. The full adoption of these documents will be phased, please see the details provided in Chapter 1. During the phased in adoption of the revised manual the 2004 version will also remain available below. As of September 30, 2024 the 2004 version will no longer be hosted online.
The Connecticut Stormwater Quality Manual provides guidance on the measures necessary to protect the waters of the State of Connecticut from the adverse impacts of post-construction stormwater runoff. This manual focuses on site planning, source control, and stormwater treatment practices and is intended for use as a planning tool and design guidance document by the regulated and regulatory communities involved in stormwater quality management.

View the Full Connecticut Stormwater Quality Manual

Or choose one or more of the specific sections to download separately: