psneeld
Guru
There is a good discussion on building tanks using epoxy in the book, "The Gougeon Brothers on Boat Construction", 5th Ed. They do not recommend West System for potable water or gasoline tanks. Diesel, sewage and gray water have held up well using West System epoxy though.
While they are experts...they are not the final say....there have been integral water tanks in glass boats for years...epoxy is used to line many different types of tanks....
Don't know if it's their epoxy that shouldn't be used...there are lot's of formulations and the right ones are definitely needed for ethanol gasoline and biodiesel...but for water I don't see their logig is complete boats are built from the stuff...maybe it's just not economical at their epoxy prices...
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