Indiana Code Title 8. Utilities and Transportation § 8-1-11.1-10

Sec. 10. For the purpose of raising money to pay all bonds issued as provided in section 8 of this chapter, and the interest thereon, to the extent that moneys are not available therefor in the judgment of the board of directors for utilities from the operations of said utility plant or plants so owned by said city, the board of directors for utilities, as an official board of said utility district, is hereby empowered to levy, and shall levy each year, a special tax upon all the property of said utility district in such manner as to meet and pay the principal of said bonds as they severally mature, together with all accruing interest thereon.  Said board of directors shall cause said tax so levied each year to be certified to the city controller of said city and the auditor of the county in which said utility district is located, on or before the first day of October of each year.  Such tax so levied and certified shall be estimated and entered upon the tax duplicate by the auditor, and shall be collected and enforced by the county treasurer in the same manner as state and county taxes are estimated, entered, collected and enforced;  and as such tax is so collected by the county treasurer, it shall be accumulated and kept in a separate fund to be known as the “Utility District Bond Fund,” and shall be applied to the payment of the aforesaid utility district bonds and interest as they severally mature, and for no other purpose whatsoever:  Provided, That all accumulations of said fund prior to their use for the payment of such bonds and interest shall be deposited, at interest, with the depository or depositories of other public funds in such city, and all interest collected thereon shall belong to such fund.