As per components of the sewerage system, what is the meaning of ‘outfall sewer’?
1
A sewer which transports sewage from a treatment plant to the final disposal point
2
A sewer which transports sewage from a house to lateral sewers
3
A sewer which transports sewage from a lateral sewer to a branch sewer
4
A sewer which transports sewage from a branch sewer to the main sewer