Mo. Rev. Stat. § 640.760
Notwithstanding any provision of law to the contrary, all liquified manure from a concentrated animal feeding operation that is purchased or received by a third party and is surface applied shall maintain an application setback of at least fifty feet from a property boundary, three hundred feet from any public drinking water lake, three hundred feet from any public drinking water well, three hundred feet from any public drinking water intake structure, one hundred feet from any perennial and intermittent streams without vegetation abutting such streams, and thirty-five feet from any perennial and intermittent streams with vegetation abutting such streams. If the department of natural resources promulgates rules providing for a distance requirement for the application of liquified manure from a concentrated animal feeding operation that is stricter than the provisions of this section, such rules shall apply to the spread of all liquified manure subject to the provisions of this section. Any violation of this section shall be subject to the penalties set forth in section 644.076.
§ 640.760, RSMo