Following a decision taken by the European Pharmacopoeia (Ph. Eur.) Commission at its 160th session (March 2018), the monograph for Water, highly purified (HPW) will be suppressed on 1 April 2019 from the Ph. Eur.
The monograph suppression is a consequence of the recent revision of the monograph for Water for injections (0169), which now allows for purification processes equivalent to distillation for producing water for injections (WFI), in addition to distillation. Hence, the HPW monograph is a duplication of the WFI monograph in terms of quality requirements and production methods, and as such became redundant.