The sewage system must be of adequate size to handle all requirements for liquid waste disposal.
Adequate drainage facilities must be designed & constructed to avoid the risk of contamination of foodstuffs.
Floor drains & gullies must be fitted with an effective water trap, accessible for cleaning and be covered with removable grids.
There must be no interconnection within the premises between floor drainage & sewerage system.
Grease traps shall be provided in suitable locations where they will not cause contamination of food, be kept clean and maintained in good condition.
There must be a water seal on all drains and all drains shall discharge directly into a piped sewer or other approved sewage disposal systems which itself shall be water sealed.
Manholes should be avoided within the premises but if present they must have a double seal & secured to prevent overflow.
Some local authorities have specific requirements relating to grease traps, the FBO should seek advice when installing/replacing a grease trap.
