The Water & Wastewater Program works to ensure safe and adequate supplies of drinking water and the proper disposal of wastewater.
The Concentrated Animal Feeding Operation (CAFO) permitting program provides oversight for facilities housing large concentrations of livestock to ensure that the waters of the state are not negatively impacted and that the waste these animals generate are appropriately treated.
We work with CAFOs under three separate regulatory programs, the WY Point Source Discharge Elimination System Program (WYPDES), the Water and Wastewater Construction Permitting Program, and for some larger CAFOs, the Air Quality Permitting Program.
The process of attaining a CAFO Permit entails the following steps:
A permit is required when more than 1,000 head of cattle or an equivalent weight of livestock are confined for more than 45 days, or the facility negatively impacts the waters of the state.
Equivalent livestock weights are listed in Appendix G of state rules Chapter 2.
If you think you need a permit for your Concentrated Animal Feeding Operation, you should gather some information before you contact us.
If your site meets most of the criteria listed above, you may qualify to contain your wastewater runoff in a “Temporary Retention Structure," which is generally cheaper and easier to build than a full retention structure. Even if your site does not meet the Temporary Retention Structure criteria, answers to these questions are needed in order to properly design your wastewater retention facility.
If you need assistance obtaining this information, your engineer should be able to help you.