@sept11memorial: As we prepare to mark the 25th anniversary of 9/11, every detail matters. In the days leading up to the commemoration, a dedicated team carefully cleans and maintains the entire 9/11 Memorial, ensuring this sacred space is ready to welcome the families of those killed on September 11 and all who come to remember. The Memorial’s iconic reflecting pools require ongoing behind-the-scenes care. The pool water movement is shaped by low barriers called weirs. The continuous flow of water through the weirs means mineral particles and pollutants can build up and cause discoloration. Take a close-up look at the weir cleaning process, one of the many ways the #911Memorial is cared for year-round - and especially as we prepare to mark the 25th anniversary of the September 11 attacks. #BTS #NeverForget911 #NYC #911Museum #MuseumTok