Missouri Revised Statutes Title XIX. Motor Vehicles, Watercraft and Aviation § 306.270. Marine toilets shall have suitable treatment device

Any marine toilet located on or within any boat operated on waters of the state shall have securely affixed to the interior discharge opening of the toilet a suitable treatment device in operating condition, constructed and fastened in accordance with regulations of the water pollution board or some other treatment facility or method authorized by regulation of the water pollution board. All sewage passing into or through the marine toilets shall pass solely through the devices.