Immunity for liability in nuisance
177A local government shall not be liable in an action in nuisance, if the damage is the result of
(a)
water overflowing from a water or wastewater system, drain, ditch or watercourse due to excessive snow, ice, mud or rain, or
(b)
the construction, operation or maintenance of a system or facility for the distribution of water or for the collection, conveyance, treatment or disposal of wastewater, storm water or both.