blue
broken
burst
casing
conduit
construction
control
cracked
diffuse
dig
dilapidated
dirty
drain
duct
equipment
fix
flow
fracture
hole
improvement
industrial
industry
joint
large
leak
leakage
leaky
material
motion
movement
old
outdoor
pipe
pipeline
piping
plumbing
repair
rust
rusty
seep
shabby
soggy
split
spread
street
system
technical
tube
water
wet