Quote:
Originally Posted by Wally
Thanks for all the great input.
If the plumbing layout dwgs supplied to me by Thor is accurate, the drain from the rear lavatory sink is piped into the grey tank.
I tried plugging the drain before running water but still had the smell. An air break valve under the sink seems to be secured and working.
The real enigma is that I cannot smell any odors from the drain but if I run a glass of water I can smell the odor in the glass. Needless to say we aren't drinking the water directly from that faucet.
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It sounds as if they hooked the faucets up to the balckwater tank: not the drain!
Have the water tested!
I forgot to ask: Are you drawing your water from your freshwater tank, or from a city water hook-up?
If it's from your tank: drain it. and give it a good sanitizing! Then try it again from a known source of good potable water.
(And hook up an external filter to that water supply also!)
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