Question

sewage contains dash and dash dash and dash impurity​

Answer 1

Answer:

here you can write in your own opinion

so the answer is

sewage contains - industrial release, septic tank waste, sludge, excrement... and other harmful waste which causes bacteria

hope it helps you :)

Answer 2

Answer:

sewage contains - industrial release, septic tank waste, sludge, excrement... and other harmful waste which causes bacteria

Explanation: