T
Tight Tank - A watertight vessel that has an inlet to receive raw sewage but no
outlet. A tight tank is designed and used to collect and store sewage until it is
removed for disposal.
Title 5 - On-site sewage disposal systems are governed by Title 5 of the
Massachusetts State Environmental Code (310 CMR 15.000). Often erroneously
written "Title V," causing confusion with the Federal Clean Air Act.
Trickling Filter - I/A treatment system in which wastewater trickles by gravity
through a filter installed between the septic tank and the soil absorption system
the wastewater.