chemical
concrete
danger
day
dirty
disaster
dump
ecological
ecology
energy
environment
factory
fatal
flowing
garbage
global
harm
harming
industrial
industry
influence
liquid
natural
nature
old
outdoor
pipe
pipeline
plant
pollution
power
problems
refinery
river
rusty
scene
sewage
sewer
stream
substance
technology
toxic
tube
unhygienic
urban
view
warming
waste
water
withdrawal