Underground Supply has been family owned and operated since 1991. Serving Western Massachusetts and surrounding areas with quality precast concrete septic tanks, distribution boxes, basement entryways and related construction products.
Our manufacturing facility, located on RTE 5 in Whately, houses a Mixer Systems computer controlled concrete batch plant yielding precise component control, producing a consistent high quality mix every batch.
Delivering 1500 gallon septic tanks in one piece provides added safety on the job site, eliminating in-the-hole seam alignment. Preassembly of tanks allows testing tank integrity at our shop without disturbing the seam for delivery.