The Pesticide in Water Calculator (PWC) is a water model used by OPP to estimate pesticide concentrations in water bodies that result from pesticide applications to land.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Pesticide in Water Calculator Version 1.50 and 1.52 User Manual (PDF)(23 pp, 420 K, February 25, 2016)