190.087(1)A rural community shall not be liable in an action in nuisance, where the damage is the result of
(a)
water overflowing from a sewer, 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 collection, conveyance, treatment or disposal of wastewater, storm water or both.
190.087(2)Subsection (1) does not apply to a cause of action that arose before the coming into force of this section.