Concurrently with the annexation of such territory the city or town and districts may by agreement provide that the administration of any outstanding indebtedness of the district may be taken over by the city or town but neither the city or town nor any agent or employee thereof shall be liable for the payment of the indebtedness. The city or town and districts may further provide that the city or town may take over the operation and management of the plant facilities or equipment of the district, the operation, maintenance and expense of operations to be paid for out of revenue derived by the districts.
W.S. 41-10-154