Sec. 4. As used in this chapter, "political subdivision" means any of the following:
(1) A county.
(2) A city, town, township, or special taxing district.
(3) A regional water, sewage, or solid waste district organized under:
(A) IC 13-26; or
(B) IC 13-3-2 (before its repeal).
(4) A drainage board established by IC 36-9-27-4.
(5) A local public improvement bond bank established under IC 5-1.4.
(6) A not-for-profit public water utility described in IC 8-1-2-125(a).
(7) A conservancy district established under IC 14-33.
(8) A county onsite waste management district established under IC 36-11.
(9) A drainage district established under IC 14-27-8.