(2) The successor city or district shall furnish geothermal heat to persons owning or occupying property within the dissolved district on the same terms and conditions as in the case of those owning or occupying property within the city, or elsewhere within the district. If the district assets and obligations are transferred to a city, the city may charge a rate for the service that is no more than the rate which is uniformly applied to all users in similar classifications outside the city. No such differential rate may be charged, however, unless such a differential is provided for, and specifically limited, by the terms of the agreement made prior to the dissolution. Nothing in this section authorizes a city to levy an ad valorem real property tax on property outside the city or district.
(3) Any debts or obligations assumed by the successor city by reason of, or during the period of, its commitment under the agreement shall bind the city until they are fully paid and discharged. No contract shall be effective unless all of the terms thereof are reduced to writing, signed by the entities and filed with the county clerk. [1975 c.782 §47]