Milk System Changes on Established Dairy Farms

Important information for Established Dairy Farms
in accordance with the Grade "A" Milk Law of 2001

(The links below require Adobe's free Acrobat Reader to view.)

  • One of the primary concerns of the law is with antibiotic contamination of milk.  Information on this may be found in manual DY-323

  • Milk from farm bulk tanks must be picked up within 72 hours.  Tanks must be emptied at each pickup unless: the tank is emptied later and before the next milking or the bulk tank has a recording thermometer.  In all cases, bulk tanks must be washed once each 72 hours of use.

  • If an established licensed dairy farm wishes to make changes to its milking system, it should consult the Equipment Installation Manual for requirements.  (This manual is primarily a table of contents with links to other documents found within).
    Here are some construction plan tips.

  • Manual DY-348 provides information behind the setup of a new dairy farm to the owner of an established dairy farm for review.  This would be helpful in implementing changes on the established farm.

  • If an established farm makes any changes to a well or water system, that farm must contact the Lansing Office at 800-292-3939 for a review of the planned changes and information on who to contact for approval of new well sites.

  • Producers interested in direct loading of milk should consider how their milk will be sampled before shipment.  There are a variety of sampling methods, but all samples must be taken by a licensed sampler.  For further information consult your inspector and the following documents: DY-360 and DY-356

  • For further information take a look at DY-321DY-344, DY-346.  These may or may not apply to your specific situation.

  • Requests for additional information can be made by email to
    mda-dairyinfo@michigan.gov


Grade "A" Pasteurized Milk Ordinance of 2007