No person shall, either within or outside of any park, discharge, throw, cast, lay, drop or leave in any river, brook, stream, storm sewer or drain flowing into or through said park, or into any river, brook or stream which may be tributary to any river, brook or stream flowing into or through said park, any substance, matter or thing, either liquid or solid, which may or shall result in the pollution of the river, brook or stream within the park, to such an extent as to unreasonably or improperly prevent or interfere with the conservation of the natural resources of said park, by preventing, interfering with, or lessening, to an improper or unreasonable degree, the use of said river, brook or stream for recreational or other proper park uses, or to endanger the health of visitors in said park in the proper use and enjoyment of the same.
(Ord. 45-72. Passed 7-6-72.)