years of Superior ratings

Independent Audits

Weekly Checklists


Focused on safety


South Mill emphasizes the fact that responsibility for quality assurance lies within each individual at the company. Scoring at or above the 97 percentile on all audits, our team has received a “Superior” food safety rating for fifteen consecutive years.

We continuously perform self-audits on our operations from growing to handling to distribution. All plant equipment, farm practices, and packing and processing departments have been brought into compliance under a company-wide Hazard Analysis Critical Control Point (HACCP) Program and The Global Food Safety Initiative (GFSI) protocols.

As an industry leader, South Mill volunteered to be the first mushroom farm in the United States to undergo a USDA-sanctioned Mushroom Good Agricultural Practices (MGAP) audit. The audit was a collaborative initiative of mushroom industry leaders, working in conjunction with the USDA, to create the most comprehensive food safety standards in the history of the mushroom industry.

In addition, tracking codes are applied to each package, which allows identification of harvest site, process, and facility. These tracking codes enable South Mill to maintain food safety by following all products from origins through the distribution channels to final destinations. South Mill is dedicated to handling products at all times with the highest level of food safety.

Global Food Safety Initiative
Hazard Analysis Critical Control Point
U.S. Department of Agriculture
Primus Labs

Food Production & Processing Certifications

Certified Organic




All area and department leaders meet on a routine basis for educational training and best practices updates.

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