Lactose fermentation is used to verify the existence of coliform bacteria in national criteria. 大腸菌群的國標檢驗法採用乳糖發酵法。
Both the fecal coliform numbers given and the chlorination concentration mentioned are two primary water-quality indicators. 測得的糞大腸菌群數據以及加氯濃度是兩種主要的水質指標。