A proposed methodology for measuring incremental environmental benefits from using constructed wetlands to control agricultural non-point-source pollution

A binary response estimation procedure using contingent valuation data is p roposed for estimating the incremental environmental benefits associated wi th the use of constructed wetlands to control agricultural waste-water runo ff. The model uses two binary responses per individual while circumventing the nonindependence problems associated with follow-up valuation questions. Case study results suggest that the methodology provides a potentially eff ective means for measuring the non-market benefits of constructed wetlands in addition to wafer-quality maintenance. (C) 1998 Academic Press.