Although most of our waterways are cleaner because of controls on direct discharges, the remaining polluted waters will only be cleaned up by addressing polluted runoff -- a mix of contaminants that can include chemicals, metals, fertilizers and oily wastes.
(most of our waterways; are; cleaner; because of controls on direct discharges) (the remaining polluted waters; will only be cleaned up; ) (contaminants; can include; chemicals, metals, fertilizers and oily wastes)
most of our waterways the remaining polluted waters contaminants
are will only be cleaned up can include
cleaner because of controls on direct discharges
chemicals, metals, fertilizers and oily wastes