This document summarizes environmental studies conducted for the Haven South Municipal Development Plan area in West Haven, Connecticut. The studies identified two areas of potential environmental concern - along First Avenue south of Elm Street, and along Water Street between Elm Street and Main Street. For the Water Street area, the properties at 30, 70, 105, and 106 Water Street were flagged for further investigation due to their past industrial uses. The Bilco Company properties at 5, 43, and 65 Water Street also indicated potential volatile organic compound contamination and are being evaluated under the state's Brownfield program. The document recommends additional environmental testing be conducted on specific properties prior to redevelopment.