Here's my real life plumbing tip, or fact. Mains water is pressurised, so to test a tap for drinking water suitability you can try and stop the flow with your finger, and it shouldn't be possible to do. Flow stopped with finger = unsuitable Entire room and self drenched with icy shower = suitable.
(If all your water is from the mains then you don't need to do this, but do it for fun if you like.)
Ha. I work in a shoddy, shoddy building which has no central heating and no hot water and the only cold water comes from a storage tank in the roof. We're assured that it's all right to drink because the tank is a sealed tank. I drink it anyway, I dunno, tastes all right to me. Tank water is not automatically undrinkable, it's just that if you're going to go round tallying risks there are certainly fewer involved in water coming straight out of a mains tap. Where you've got a tank with a big turnover as I imagine this one here must have, it makes little practical difference; a closed tank is kind of just a *really* large diameter pipe, after all
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I think that the tank is sealed does make a difference. The gov website didn't say it, but I'm lead to understand in 'the old days' people would sometimes go up in their loft to find a dead pigeon bobbing up and down in their tank, hemce not safe to drink. Surely also not ideal for washing in either.
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Mains water is pressurised, so to test a tap for drinking water suitability you can try and stop the flow with your finger, and it shouldn't be possible to do.
Flow stopped with finger = unsuitable
Entire room and self drenched with icy shower = suitable.
(If all your water is from the mains then you don't need to do this, but do it for fun if you like.)
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It also sounds like a mnemonic rhyme...
Flow stopped with finger, the thirsty shouldn't linger.
Flow drenches you, a deliciously healthy brew!
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