Iowa Admin. Code r. 21-68.27
The October 1, 2009, manual prepared by USDA/AMS, Dairy Division, titled "General Instructions for Performing Farm Inspections According to USDA Recommended Requirements for Manufacturing Purposes and Its Production and Processing for Adoption by State Regulatory Agencies," is adopted in its entirety and shall constitute the official standards for farms producing milk for manufacturing, with the following exception:
Strike from Rule lc, Brucellosis Test, the words "Uniform Methods and Rules for establishing and maintaining Certified Brucellosis Free Herds of Cattle, Modified Certified Brucellosis Area and Certified Brucellosis Free Areas which are approved by Animal Disease Eradication Division, Agricultural Research Service...", and insert in lieu thereof, "Brucellosis Eradication, Uniform Methods and Rules, effective February 1, 1998". The bacteriological standards for private water supplies used by dairy farms consist of an MPN (Most Probable Number of Coliform Organisms) of less than 2.2/100 ml by the multiple tube fermentation technique, or less than 1/100 ml by the membrane filter technique, or the results of any water test approved by the United States Food and Drug Administration or Environmental Protection Agency of less than 1/100 ml.
Iowa Admin. Code r. 21-68.27