Tanks are made from polypropylene - a food grade plastic material
which will not taint fresh water and will not allow odour absorption,
making it ideal for sewage tanks.
Tanks (Patent No. 314835),
(United States Patent Application No. 12/194,337) are constructed with wrap-round corners
and edges, giving the tanks their unique strength and are baffled clear
of the bottom allowing for efficient drainage.
a complete design, construction and fitting service, including