——Industrial waste——— should be treated chemically before deposing it to rivers.
=》The waste from factories & industries are highly acidic/base. This leads to the increase/decrease of the pH value of water in the rivers making it contaminated & unfit for drinking. This also causes a huge problem for aquatic organisms.
=》Industrial waste should be neutralized before depositing it into water bodies to reduce these risks.
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⚜ Hope it helps :))
