Untreated water into a river. Bad, dirty, untreated water flows from a pipe. environmental pollution by wastewater.
Schlüsselwörter
background,
biomass,
bubble,
cleaning,
clear,
closeup,
concrete,
dirty,
drain,
drainage,
ecology,
environment,
environmental,
factory,
filter,
flow,
flowing water,
foam,
industrial,
industry,
macro,
management,
material,
nature,
no one,
no people,
pipe,
poison,
pollution,
duck pond,
problem,
recycling,
reservoir,
rough,
sewage,
sewerage,
slimy,
snow,
social issue,
surface,
system,
tank,
texture,
treatment,
valva,
waste,
water,
waterfall
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