water tanks, metal, potable?
Posted: Tue Oct 07, 2014 1:18 am
This past weekend we lost power for 36 hours. I'd just bought a new 275 gallon ibc tote to hold drinking water, which we did not need, but my wife was glad we had it. I was talking with some extended family that have well water, and they lost power, so they lost their water. I suggested they get a ibc tote, too just in case.
But then we got to talking, and they have a friend of a friend with a metal water tank that was off a water truck. 700ish gallons. Roughly four by nine. Not aluminum, maybe stainless? (not sure how to tell, not sure if there is still a manufacturers plate on it) He only wants $300 for it. Which is about what I paid for one new 275 gallon ibc tote. I thought that was a great idea for water storage: the metal tank should last longer outside, not degrade in sunlight like the plastic does, and should be repairable by welding if it does spring a leak. But my dad, a civil engineer, said not to use it as it would not be good for potable water. He did not explain any further, and he's out of town right now so I don't want to bother him, plus he was a little snippy about it.
So, is there a problem using an old water tank like that for potable water?
I also found a guy selling some aluminum water tanks from military trailers, that we then used by volunteer firefighters for off road water haulage, would those be alright for potable water?
Is the holdup that they'd need to be cleaned good, or what?
Are plastic bladders available that would fit inside? Or would the interior need to be coated in something?
I'm finding lots of "don't ever use aluminum tanks because alzheimers!" but I thought that got debunked a few years ago.
It seems like boats use aluminum and steel water tanks.
Any thoughts?
It's cheap enough I kinda want to buy the 700 gallon tank anyway, and if it's not useable for water bury it in the backyard for an instant storm shelter/wine cellar.
But then we got to talking, and they have a friend of a friend with a metal water tank that was off a water truck. 700ish gallons. Roughly four by nine. Not aluminum, maybe stainless? (not sure how to tell, not sure if there is still a manufacturers plate on it) He only wants $300 for it. Which is about what I paid for one new 275 gallon ibc tote. I thought that was a great idea for water storage: the metal tank should last longer outside, not degrade in sunlight like the plastic does, and should be repairable by welding if it does spring a leak. But my dad, a civil engineer, said not to use it as it would not be good for potable water. He did not explain any further, and he's out of town right now so I don't want to bother him, plus he was a little snippy about it.
So, is there a problem using an old water tank like that for potable water?
I also found a guy selling some aluminum water tanks from military trailers, that we then used by volunteer firefighters for off road water haulage, would those be alright for potable water?
Is the holdup that they'd need to be cleaned good, or what?
Are plastic bladders available that would fit inside? Or would the interior need to be coated in something?
I'm finding lots of "don't ever use aluminum tanks because alzheimers!" but I thought that got debunked a few years ago.
It seems like boats use aluminum and steel water tanks.
Any thoughts?
It's cheap enough I kinda want to buy the 700 gallon tank anyway, and if it's not useable for water bury it in the backyard for an instant storm shelter/wine cellar.