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Check where it connects under the sink to the drainage or the garburator. It will more than likely be plugged somewhere near that connection. Unplug it, and run 2 cups of vinegar and 1/2 a cup of baking soda through a long hot cycle in the D/W. This should get rid of the sewer odor.

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Q: Why does a dishwasher smell like a sewer and won't drain?
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Why would your house smell like sewer whenever you run the washer or dishwasher?

I suspect that you have a "p" trap in either a floor drain, or possible the laundry tub or a sink somewhere in the house. If you look under the kitchen sink, or a lavatory in the bathroom you can see a p-trap, it's shaped sort of like the curved part of the letter p. The purpose of the p-trap is to trap, or prevent, sewer gasses in the sewer lines from backing up into the house. By design, p-traps catch and hold some water, which blocks the pipe and stops the gas from coming up through the drain. IF you have a floor drain, or a lavatory drain, either of which don't get used enough to keep the water in the trap from evaporating away, leaving the drain pipe open, then when a lot of water is poured or flushed, pumped out of a washer, then that flowing water will push sewer gasses back up through the drain with the dry p-trap. What you are smelling is sewer gas.


What does the plumbing look like for a double sink no garbage disposal and a dishwasher?

Most common is a center drain, but it can be at either side depending on where the drain goes into the wall. On the side closest to the dishwasher, the tail piece directly under the sink has a smaller tube in the side of it for the dishwasher drain.


Why does in stink under your bathroom sink this is the only place that you have this terrible smell it smells like sewer gas?

Check to see if all the pipes are on and make sure there is not a open clean out drain there if there is make sure it is close


Why Do I Have a Sewer Smell in My Home?

Have you noticed an unpleasant odor drifting through your home? You didn’t burn dinner. You just cleaned the house. Still, for some reason, your home smells like the sewer. You can try to cover up the stench with scented candles, but this probably isn’t the best solution. This smell is typically caused by one of three reasons: Sewer trap plugs. Missing or loose sewer trap plugs are the most common cause of indoor sewer smell. Your sewer access pit contains a house trap. This is a U-shaped piece that traps water to serve as a barrier between the city sewer and your home. If the plug on this trap is poorly fitted or gone entirely, public sewer odor can travel into your home. Simply replace the plug, and your air should clear. Dried trap. If the water in the U-trap has dried up, it no longer acts as a barrier to the sewer odor. Run some water into the trap to recreate the barrier. This should eliminate the odor. City sewer. Is the odor coming from outside? A sewer smell outdoors can indicate the city sewer is experiencing major plumbing problems, not your home. However, if the smell persists, it may be due to the drains from your house. Contact a plumber to check your drainage system for proper functioning. When home or property owners are experiencing heavy drain clogs in UK, they call the experts at MR Drains, as they are experts in all aspects of drainage from blocked drains, to CCTV camera surveys, to all aspects of drain repairs.


Why do toilets in Mexico smell like the sewer?

Code there doesn't always require a 'P' trap to hold water and thus block sewer gases from backing into the house.


Why would the master bath walk in shower smell of sewer gas if there is no backup or clogs and the smell comes and goes and has nothing to do with cleaning?

I am struggling with this. I have a plastic drain and trap and I think the problem has to do with sediment in the water. A white substance gets caked inside the drain and smells like crazy as soon as water touches it. Is it sulfur in the water? I am trying to clean it regularlyAnsweryour wax seal is gone between base of toilet and flange, because the trap of the toilet is above this point sewer gas would be prevelant if the wax ring is deteriated.


Install garbage disposal on which side of double sink?

Unless there is another issue like drain location or cabinet design it is pretty much personal preference. The side closest to the dishwasher if you have one would probably be best for the dishwasher drain hook up


Double kitchen sink has a foul organic smell like wet roots doesn't run slow no disposal do have a dishwasher no smell there have flushed it with hot water oxyclean and drain cleaner?

Do this. Pour baking soda into both sinks until baking soda can be seen in the drain. Pour white vinegar into the baking soda. It will foam massively, so step back. Keep pouring vinegar into the baking soda until it quits foaming. Rinse with hot water. That should cure the smell issue...and make the drain run faster too!


Why does the basement smell of raw sewage?

It could possibly be coming from the drain. There is water in the drain that goes to your septic or holding tank even city sewer that stays in the pipe acting as a plug to prevent the odor from coming up. Same as an elbow on a sink drain. If that water evaporated or somehow drained, then your drain now has a direct contact to the sewer/septic. Imagin it being like a snorkle connecting the sewer gas to your basement. If this is your problem the fix is easy. Simply pull the floor drain cap up, usually two or three screws. Pull out any debris that may have gotten down in there. Pour a few gallons of water down the drain. You should see water in the drain at all times, but still pour a few gallons down. Your creating a plug between your basement and the sewer. After this is done, vent the room with fans. Wait a few hours and see if the smell is gone. If it's still there you may have a bigger problem. Call a plumber who can narrow down the causes in just a few minutes. ALSO, maybe just check around with a flash light, you might find the source of the smell is simply a dead mouse!


Is it a good idea to flush cooking oil down the toilet?

If you are on city sewer they won't like it. but if you are on septic it won't really hurt anything unless your talking gallons of the stuff. If you have a floor drain that isn't being used much I prefer you dump it down there. That way the trap of the floor drain won't go dry and start making a smell.


Get rid of sewer flies?

Sewer flies are also called drain flies. To get rid of them you have to first clean the drain. Use a pipe brush to do this. Follow the cleaning by pouring some gel drain cleaner down the drain.


What if your house started smelling like gas or oil and you had a pipe freeze and burst a few days before...could the proble be mildew or mold?

I am not sure about gas or oil. A foul odor could be from the sewer system. All of the drains in your home have a trap that keeps water in the pipe. This water prevents sewer gases from coming into the home. If you pour water into each drain (sinks, tub, shower, toilet, and any other drain in the home), you may find that the smell goes away.