Discuss New build house smell in the USA Plumbers Advice area at PlumbersForums.net

Might be a design fault where the water is being sucked out of a trap somewhere,
Block overflow and put plug in one item at a time to try and isolate which it may be.
We think its coming from the kitchen sink, we did as you suggested and when unplugged kitchen sink the smell came back but its intermittent but its disgusting smell. We now have heard through the grapevine that the builder intends to put a vent onto holding tank next door. Apparently it was suggested by the Building control inspector (agent from the local council) that this may be the problem. What do you think? Any suggestion will be welcome, its really getting us down!
 
We have just heard through the grapevine that the builder intends to 'vent' the pump station tank. Do you think that is the problem?
It's possible that an open vent will help. Building regs say that a foul drainage system should have an open vent to atmosphere (as in soil stack) somewhere to relieve positive pressure.

AAV's only deal with allowing air into the system to avoid water in traps being sucked out. They don't help in the event of a higher pressure in the drain system (possibly created by the pumping station) that could push foul air through a shallow trap.
 
Not really what they are designed for but would solve your problem short term if this is getting you down ?? Kop
 

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I think it’s quite common to employ someone who creates a snagging list for new builds.
I’m sure they can advise on how to get the builder to act in a reasonable timeframe.
 
I think it’s quite common to employ someone who creates a snagging list for new builds.
I’m sure they can advise on how to get the builder to act in a reasonable timeframe.
We are doing a snagging list ourselves but it seems impossible to find the reason for the awful intermittent smell. The builder is far too busy and ignores us..and our next door neighbour who has same problem.
 

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