Ind. Code § 13-18-4-5
(a) Except as provided in subsection (b), a person may not:
(2) cause, permit, or suffer to be thrown, run, drained, allowed to seep, or otherwise disposed;
into any of the streams or waters of Indiana any organic or inorganic matter that causes or contributes to a polluted condition of any of the streams or waters of Indiana, as determined by a rule of the board adopted under sections 1 and 3 of this chapter.
(b) Subsection (a) does not apply to organic or inorganic matter that consists of fertilizer material contained in:
(2) irrigation return flow;
entering the waters of Indiana as a result of land application of fertilizer material in compliance with rules adopted by the state chemist under IC 15-16-2-44 .
(f) Before the rules for land application of fertilizer materials adopted under IC 15-16-2-44 by the state chemist take effect, a person may meet the requirements under subsection (b) if the person maintains documentation of compliance with:
(g) Subsection (b) does not affect liability for killing wild animals under IC 14-22-10-6 .
[Pre-1996 Recodification Citation: 13-1-3-8.]
As added by P.L.1-1996, SEC.8. Amended by P.L.189-2011, SEC.11.