Sewers

25 Commissioners may alter sewers from time to time.
The commissioners may from time to time, as they see fit, enlarge, alter, arch over, and otherwise improve all or any of the sewers vested in them, and if any of such sewers at any time appear to them to have become useless, the commissioners, if they think fit to do so, may demolish and discontinue such sewer, provided that it be so done as not to create a nuisance.