In the UK drinking water can contain no more than 100 micrograms of THM per litre. A microgram is one millionth of a gram. 在英國每升飲用水中三鹵甲烷（THM）不允許超過 100 微克（ 一微克是一克的一百萬之一）。
Levels of free testosterone found in the 300-microgram-dose group were close to those usually seen in women ages 18 to 24 years. 研究發(fā)現，在300微克小組，其組員身體內游離睪酮含量水平與18-24歲女性通常含量非常接近。
Whether this has a potential for carry over into food at low concentrations (usually in the range of microgram per kilogram) and could further impact human health may need further evaluation. 關于這種情況能否導致少量成分（通常在微克/公斤范圍內）進入食物，繼而對人類健康產生影響可能還需要進一步的評估。