Proposed Updates to Missouri CAFO Rules

This site tracks efforts by Missouri Department of Natural Resources to update the current Missouri CAFO rules and renew permits issued to CAFOs.
More information on Missouri CAFO regulations can be found at
and at the MDNR CAFO website.

July 30, 2010 Public Comment on the Two-year General CAFO Permit


Missouri DNR has opened the proposed CAFO General Permit for public comment. The comment period on the proposed permit started June 30, 2010 and will end September 13, 2010 at 5:00PM.

The main change in this General Permit compared to the current General Permit is the requirement for farmers to submit to MDNR and follow a nutrient management plan that meets the requirements of the Missouri CAFO Nutrient Management Standard

The proposed permit can be viewed on the MDNR website. The cover letter includes details on where to submit comments.

MDNR CAFO Working Group


This work group organized by MDNR is considering other possible changes to Missouri CAFO rules.

The Work Group is scheduled to meet regularly through fall and winter of 2010-2011 to consider "Phase 2" proposed changes to Missouri CAFO regulations. Proposed changes include revisions to the "Permit Rule" and to the "CAFO design rule". Meetings are tentatively scheduled for:

  • September 28, 2010 from 10AM to 3:00 PM.
  • October 26, 2010 from 10AM to 3:00 PM.
More information on location will be posted at the MDNR CAFO Rule Workgroup website

June 16, 2008 Proposed Revisions to Missouri CAFO Rules


Missouri DNR has proposed changes in Missouri CAFO rules to meet the requirements of the 2003 Federal CAFO rule revisions. The comment period on the proposed changes started June 16, 2008 and will end September 17, 2008.

Public Hearing Scheduled:  A public hearing on proposed changes to the Missouri CAFO Rules is scheduled during the next Clean Water Commission meeting.  The meeting will take place September 10, 2008 and is being held at:

Q Hotel and Spa, 560 Westport Rd., Kansas City, MO

The meeting is scheduled to convene at 9:00AM and the CAFO rule is the first item on the agenda.  Public comments submitted at this meeting will be included in the official comment record and considered before finalizing the rule.  Written comments will be accepted until September 17, 2008.

MDNR Proposed Revisions to the Rule

MDNR Website Summarizing the Proposed Revision