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Old 02-26-2010, 10:31 AM   #1
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Sewage smell


We have a strong sewage smell coming from the shower drain in the basement. The washing machine drains into this shower drain. The sewage smell only occurs at night. When we pour some bleach into the drain, the smell goes away, but it returns the next night.

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Old 02-26-2010, 09:48 PM   #2
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Sewage smell


If you don't run the washer for a day, do you still have the same problem?

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Old 02-27-2010, 02:48 AM   #3
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Sewage smell


Sounds to me you need a vent for the wash machine.
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Old 02-28-2010, 02:45 PM   #4
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Sewage smell


If we don't run the washing machine, we don't get the smell that night. Could the vent be plugged?
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Old 02-28-2010, 09:16 PM   #5
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Sewage smell


Could be a lack of vent for the floor drain, clothes washer or distance from a vent to the floor drain too great. Sounds like your washing machine is siphoning out the floor drain. Does it have a trap primer?

You shouldn't have to pour bleach into it. Just plain water and the smell should go away if this theory is correct.
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Old 02-28-2010, 11:05 PM   #6
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Sewage smell


slightly run the water. Sounds like your p-trap evaporated allowing the gas to escape
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Old 03-01-2010, 10:04 AM   #7
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Sewage smell


Quote:
Originally Posted by noahweb View Post
slightly run the water. Sounds like your p-trap evaporated allowing the gas to escape
Water does not evaporate that quickly.
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Old 03-01-2010, 05:50 PM   #8
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Sewage smell


are u saying that the washer actually drains into the shower pan or into the same drain as the shower in the floor?if the vent is clogged that could cause trap siphon.

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