dumping
We are reducing the dumping of raw sewage into the rivers.
There will be tougher fines for a range of offences, including the dumping of abandoned cars.
He said dumping of chemicals was routine when he worked there.
The first that many residents knew about the dumping of the animal carcasses was a revolting smell that enveloped the village.

SMART Vocabulary: related words and phrases

Environmental issues
agroecology
air pollution
anoxia
anoxic
anti-conservation
carbon capture
dumping ground
eco-audit
eco-footprint
energy conservation
energy security
environmental justice
environmentalism
environmentally
reduce, reuse, recycleidiom
runoff
scrapyard
scrubber
sequester
sequestration