- A source of pollution that issues from widely distributed or pervasive environmental elements: Compare with point source. cattle are the leading nonpoint source of pollution in Canada todayMore example sentences
- As he points out, good forestry is part of the solution to nonpoint source pollution.
- Water bodies can violate water quality standards because of either point source or nonpoint source pollution.
- In its program, a state or territory describes how it will implement nonpoint source pollution controls, known as management measures.