Yes. Care must be taken to locate water sources and drains in areas where their presence does not interfere with required ISO classifications. Water sources and drains must be located at least one meter from the Containment Primary Engineering Control (C-PEC).
Within an ISO classified area, a handwashing sink must be placed in the anteroom at least one meter from the entrance to the HD buffer room to avoid contamination migration into the negative pressure HD buffer room.
Within an unclassified C-SCA, a handwashing sink must be placed at least one meter from C-PEC and may be either inside the C-SCA or directly outside the C-SCA.