“…In 1999, the Charles River Conservancy was organized to educate the public about the built environment of the lower Charles River, and to advocate for the restoration of its parks, parkways, and bridges (Haglund, 2003;Charles River Conservancy, 2004). The history of metropolitan Boston's water-supply system-another critical aspect of the built environment-has been well documented (Nesson, 1983;French, 1986;Elkind, 1998;Rawson, 2004), and the development of its wastewater infrastructure has also been described (Clarke, 1888;Massachusetts Water Resources Authority, 2004a).…”