ET-4 (2/18/05 version)
Environmental Targets And Priorities: Chemical Integrity

Section 502 (19) of the Clean Water Act defines pollution as human-induced alteration of waters caused by pollutants as well as non-pollutant agents, such as flow alteration, loss of riparian zone, physical habitat alteration, and introduction of alien taxa. This definition is consistent with the State of Ohio definition of NPS pollution which includes consideration of polluted runoff and physical alterations to the stream as illustrated in Figure 1.

This section of the NPS Plan 2005-2010 focuses on NPS pollutants that reach surface and ground water through overland transport and are controlled through some type of overland transport management practice system.