Sand traps are required for Car Wash operation. Sand traps tanks have baffles that allow sand to be separated from the water before the water flows into the municipal sewer system.
Periodic sand trap pumping is the only way to keep the trap in working order.
Sand in the water system clogs pipes and causes major backups that are costly to clean up - it costs less to regularly pump out the trap.
Grease trap maintenance is crucial to the operation of a commercial kitchen - neglected grease traps are unsanitary and have a rancid smell. Grease traps are designed to allow the grease in the kitchen waste water to be separated out before the water goes into the municipal sewer system. It is important that grease is removed from water before going into an onsite liquid waste system.
Pumping the grease trap regularly keeps the trap working properly and avoids costly grease-created problems - clogged systems and drain-fields - all more costly than regularly pumping out the trap.