Science, asked by himanshu228, 1 year ago

what is a sewage why is it harmful to discharge untreated sewage into rivers and lakes

Answers

Answered by dhruv124
6
It has many acids, bacterias and nitrogenous waste whitch is harmful for aquatic life
Answered by riya88268
6
Sewage is a type of wastewater that is produced from Community of people and industries also...
OR
Its a wastewater and excrement which is put in sewers and then drained into river or lake or pond..
Its is harmful to discharge untreated sewage into rivers or lakes because it contains some chemical like some strong acids or bases which can pollute the water and also disturb the aquatic life and if that water is drunken by us then various diseases could be spread
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