Re: Sewer smell in house is HORRIBLE
Posted by Speculative follow up on February 06, 2004 at 08:05:13:
In response to Re: Sewer smell in house is HORRIBLE
The Sewer gas may be coming up from the drain lines such as under your sink. This gas is normally stopped by the water in the P-trap between the sink and the drain line. Why would the P-trap not be filled with water? One answer may be an unused sink such as in a guest bathroom or utility room which has gone unused so long that the water in the P has simply evaporated out. Another answer is that an air vent has become plugged. Without a clear air way, the vacuum of the water draining away pulls air through the appliances, this vacuum sucks the water out of the P-trap leaving an open path for the sewer gas. If this is the case, going up on the roof and snaking out the air vent will restore the air flow.

Good luck


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