The Missouri Supreme Court ruled in April that a state law prohibiting counties from imposing regulations on concentrated animal feeding operations (CAFOs) does not violate the state’s constitution.

In 2019, the Missouri General Assembly passed a bill preventing county rules for farms that are “inconsistent with or more stringent than” state law or regulation. Two years later, they tightened the wording, establishing that country ordinances can’t be “inconsistent with, in addition to, different from, or more stringent” than state rules. Prior to this bill, 20 counties in Missouri had some sort of restrictions in place to regulate CAFOs.

This article appeared in the May 2023 issue of Journal of Nutrient Management on page 5.