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Could be caused by a couple of things. If you have an onsite septic system (tank and drain field) the tank may be full, and the rainwater is causing it's contents to backup the main drain back in to the house. A vent pipe could be plugged, which causes the sewer gas to back up. If you are hooked to a public sewer, there may be a blockage in the main drain out to the line in the street. Have a Plumbing contractor check it out. It can be very dangerous.

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15y ago
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14y ago

I would wonder if there is a break or blockage in the sewage pipe line.

May be the floor drain in the laundry room is without Trap..

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Q: Sewer smell in the basement when it rains?
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Why do you smell sewer gases in your house when it rains?

ummmmm............. your not supposed to i suggest you get that checked!!


What is wrong after installing a sink and toilet in a basement you can smell sewer?

Sounds like the trap in the sink is getting the water pulled out of it. It probably wasn't vented properly.


How do you identify a sewer gas smell in basement bathroom?

Most likely a drain has dried out and there is no water in the trap to stop the gas from coming up. Sink, shower, or main floor drain.


How do you prevent the sewer drain from flooding the basement?

You hire a plumber to put in a one way sewer drain valve.


How sewer gas smell?

Awful.


How does sewer gas smell?

Awful.


How do you prevent sewer line backing up into basement?

Install a one way check valve in the line from the house to the sewer.


How do basement toilets flush?

Either they are on a separate sewer line and connect to the main sewer line later on or they sewerage is pumped by means of a machine into the main sewer line.


Why would sewer gas smells start after an inexplicable leak under the utility sink in the basement which is now dry?

The trap in the drain line under the sink is dry. It should have water in it to stop the smell


How do you get rid of bad sewer smell?

Lime


Raw sewage in basement only when cold outside?

Frozen sewer out side


How can you unclog a washroom floor drain when it rains?

There are details you didn't give us.If your washroom floor drain only clogs when it rains, that may be a feature, not a bug. There are backflow traps that can be installed in floor drains to keep them from backing up and getting sewer water all over the floor. If your washroom floor is in the basement, the fact that it's clogging when it rains may be saving you from a big, nasty cleanup job.