A recent investigation by the Zurich Cantonal Laboratory has found serious hygiene problems in coffee machines that make milk-based drinks. Tests showed that one in four samples contained too many intestinal bacteria. This raises concerns about the cleanliness of machines many people use every day. The laboratory tested 15 samples of milk drinks from various coffee machines last year. Results released by the canton of Zurich in July 2025 showed four samples had too much Enterobacteria. These bacteria live in human and animal intestines. Some types can cause diarrhea and stomach problems. One more sample had high levels of aerobic … Continue reading Zurich Lab Finds Intestinal Bacteria in 25% of Coffee Machine Milk Drinks: Poor Maintenance to Blame