The European Directorate for the Quality of Medicines & HealthCare (EDQM) has recently published updated versions of three water monographs in the European Pharmacopoeia (Ph.Eur.): The European Pharmacopoeia (EP) defines stringent specifications for different grades of water used in pharmaceutical manufacturing, including Purified Water and Water for Injections (WFI), to ensure patient safety and product quality. The European Pharmacopoeia Commission (EPC) adopted three revised texts related to pharmaceutical waters during its 182nd session in June 2025. This constitutes a significant step forward in converging quality standards for the most widely used excipients in the pharmaceutical industry. These draft revisions aim to improve clarity and precision in the standards for pharmaceutical water, ensuring consistency and reliability in water quality testing. Unlike other official articles, the bulk water monographs (Purified Water and Water for Injection) also limit how the article can be produced because of the belief that the nature and robustness of the purification process is directly related to the resulting purity. Highly purified water is a unique specification for water found only in the European Pharmacopoeia. This grade of water must meet the same quality standard as water for injections (WFI), including the limit for endotoxins. Although the focus of this document is on water for pharmaceutical applications, the guidelines may also be relevant to other industrial or speci c uses where the speci cations and practices can be applied. The European Pharmacopoeia (Ph. Eur.) provides quality standards for grades of water for pharmaceutical use including Water for Injections (WFI), Purified Water and Water for preparation of extracts. Changes to the water monographs have been published in the European Pharmacopoeia (Ph. Eur. 12.3). The chapters concerned are Water for Injections (0169), Water, Purified (0008), and 2.2.44. Total organic carbon in water for pharmaceutical use. Under normal conditions, the European Pharmacopoeia only stipulates a total number of colony-forming units of 10 CFU per 100 ml as an action limit. According to the monograph, at least 200 ml of water should be used for this purpose.