Private inter allotment easements are the responsibility of the property owners who are burdened by and/or benefited by the easement.
Stormwater runoff and drainage can be a source of problems for some residents, especially if the water is coming from another property. Council understands that this can cause disputes between neighbours. Council does its best to ensure that action is taken, if required and where legislatively possible.
If you're a resident living on a sloping site, you should be aware that natural surface water runoff flows down the slope following the contours of the block. Unless the cause of the surface water meets the criteria above, you carry the responsibility to install surface water controls. Any diversion of surface water must be carried out in a way that doesn't have a detrimental impact on any other properties further down the slope.
Seepage water is the responsibility of individual property owners. Where sloping blocks have been excavated to obtain a flat yard or building site, seepage drains should be constructed to redirect water to a stormwater drainage system. You should liaise with neighbours to address any problems.