Ethan Brush
New Member
Not exactly sure which topic this should go under.....Ive got a shallow dug well and I want to seal off the concrete block work casing down to about 5 feet. At first I was going to get a poly water tank, cut the bottom off and stick it upside down over the top, but to get one here (would need to be about 60" diameter) got up around the $800 range with freight. I have some EPDM rubber here I could use. Anyone know if that is suitable for potable water? I did a bunch of internet searching, and there seems to be sort of a consensus that it is fine, but nothing from any sources I really trust. Seems like this would be a definite known thing from rainwater catchment systems. There are expansion tanks, but as far as I can tell those use butyl rubber for the diaphragm or bladder. Wikipedia says this:
As a roofing membrane it does not pollute the run-off rainwater (which is of vital importance for rainwater harvesting).
But has a "citation needed" after it LOL.
As a roofing membrane it does not pollute the run-off rainwater (which is of vital importance for rainwater harvesting).
But has a "citation needed" after it LOL.