Grease is the number one cause of kitchen drain backups
Every fryer, flat-top, and dish sink in a commercial kitchen sends fats, oils, and grease down the drain. The trap or interceptor catches them before they reach the sewer or septic tank. When it is full, grease passes straight through, cools, and hardens in the line. The result is a slow floor drain on a Friday night, then a backup, then a health inspection problem.
Restaurants on Lark Street in Albany, Broadway in Saratoga Springs, and River Street in Troy are on municipal sewer, where the sewer authority watches grease closely. Rural restaurants and banquet halls in Malta, Brunswick, or Duanesburg are often on septic, where grease kills drain fields. Either way, regular pumping is cheaper than the alternative.