Requiring a landlord of property that is served by an on-site wastewater system to ensure, on or before July 1, 2028, and before each new tenant occupies the property thereafter, that the system has been inspected and pumped out in a certain manner; requiring a landlord or an owner of property to notify a certain delegated approval authority that an on-site sewage disposal system has failed and when the system is fixed, under certain circumstances; extending certain dates; etc.