Although point sources of water pollution continue to be a problem in the Susquehanna, nonpoint sources such as storm water runoff, mine drainage, agricultural runoff, and runoff from construction sites, are receiving increased emphasis in current pollution control drives.
(point sources of water pollution; continue; ) (point sources of water pollution; to be; a problem in the Susquehanna) (nonpoint sources such as storm water runoff, mine drainage, agricultural runoff, and runoff from construction sites; are receiving; increased emphasis)
point sources of water pollution point sources of water pollution nonpoint sources such as storm water runoff, mine drainage, agricultural runoff, and runoff from construction sites
continue to be are receiving
a problem in the Susquehanna
increased emphasis