21 C.F.R. § 1250.50
Toilet and lavatory facilities.
Cite as 21 C.F.R. § 1250.50 (2026)
Where toilet and lavatory facilities are provided on conveyances they shall be so designed as to permit ready cleaning. On conveyances not equipped with retention facilities, toilet hoppers shall be of such design and so located as to prevent spattering of water filling pipes or hydrants.