Early this year, MUJI announced a worldwide recall of its bottled water products after detecting excessive bromate contaminant, a disinfection by-product (DBP) generated during ozone disinfection. Although the products mentioned in the recall notice have never entered Chinese mainland, the news was quickly spread on social media Weibo and aroused much widespread concern over drinking water safety, whose market penetration of water purifier/disinfector is only about 20% and household water purifier market will keep a growth of over 10% until 2022. This article explains how the drinking water disinfectants and DBPs are regulated in China and the latest regulatory developments in drinking water quality standard, the GB 5749, which is closely related to the premarket approval of drinking water-related products.