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Old 05-05-2016, 05:51 PM   #11
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Are you absolutely sure it's the water? Reason I ask is because there's a new type of one-way drain valve that sits in a horizontal position, probably close to the down pipe from the sink, that might be holding stagnant water and allowing smell to waft up the drain when you start running the hot/cold. Ignore if you have a p-trap under the sink. Isolate the fresh water in a cup so you can do a smell test. If the fresh water, hot or cold, is smelling, then I have nothing to add.
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Old 05-05-2016, 05:53 PM   #12
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The water in my bathroom just reeks of rotten eggs. I have no issues with any of the other two sinks. The smell dissapates after running the water for several seconds but is still there. This is with both hot and cold. It doesn't matter if I'm on city or fresh water. I had issues with the hot water tank so that has been flushed too. Any suggestions? Thanks, Randy

Since the sink stinks and not the tap water, I've had a similar, recurring problem. My unit has two Hepflo traps from England, instead of trapping a couple inches of water, this trap uses a flexible diaphragm to prevent backflo. After awhile scum builds up and prevents closure and gases are free to flow through the sink. Easy fix is about 5 oz's of straight bleach and allow to sit 15 minutes or more. Rinse sink with stopper closed and save until time to flush down drain. Works every time.
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Old 05-05-2016, 06:28 PM   #13
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Originally Posted by phillyg View Post
Are you absolutely sure it's the water? Reason I ask is because there's a new type of one-way drain valve that sits in a horizontal position, probably close to the down pipe from the sink, that might be holding stagnant water and allowing smell to waft up the drain when you start running the hot/cold. Ignore if you have a p-trap under the sink. Isolate the fresh water in a cup so you can do a smell test. If the fresh water, hot or cold, is smelling, then I have nothing to add.


Another way I've tested is plug the drain in the sink and add 1/2" of water. This stops any smells from coming up. THEN run the water for a bit- if it stinks, it's the water; if not, it's the drain.
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Old 05-05-2016, 06:32 PM   #14
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Check under sink if you have an air admittance valve that could be defective....
X2. Bet thats your problem if that valve is located in the cabinet under the bathroom sink.
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Old 05-05-2016, 09:45 PM   #15
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X2. Bet thats your problem if that valve is located in the cabinet under the bathroom sink.

I don't think the air vent would stop stinking by adding a small amount of water down the sink.
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Old 05-05-2016, 09:52 PM   #16
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Since the sink stinks and not the tap water, I've had a similar, recurring problem. My unit has two Hepflo traps from England, instead of trapping a couple inches of water, this trap uses a flexible diaphragm to prevent backflo. After awhile scum builds up and prevents closure and gases are free to flow through the sink. Easy fix is about 5 oz's of straight bleach and allow to sit 15 minutes or more. Rinse sink with stopper closed and save until time to flush down drain. Works every time.

Mistake on valve mfg. it's made by HepvO in the UK. The valve does not live up to its claims. The unit in the shower allows heavy back flow and the sink requires cleaning every couple of months.
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Old 05-06-2016, 12:34 PM   #17
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fixing the stink

Go to home depot and purchase the PVC you need to replace the diaphragm with a regular p-trap. You lose some room, but loose the stink!
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Old 05-06-2016, 01:05 PM   #18
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remove your adenoid in your hot water tank and clean or replace it sounds like too much iron in the water. Make sure it's filled before you turn back on .
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Old 05-06-2016, 01:56 PM   #19
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where are you maybe sulphur water i know years ago i used to get some out west
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Old 05-06-2016, 06:48 PM   #20
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The water in my bathroom just reeks of rotten eggs. I have no issues with any of the other two sinks. The smell dissapates after running the water for several seconds but is still there. This is with both hot and cold. It doesn't matter if I'm on city or fresh water. I had issues with the hot water tank so that has been flushed too. Any suggestions? Thanks, Randy
I had the same issue. Flush Atwood Water Heater twice until the water from the drain was crystal clear. Flushed hot and cold water supply lines to washer/dryer, which has not been used. Still had the smell out of the bathroom faucets. Removed sink U trap and whoa! finally found the source. The buildup in the u trap and small straight section of piping from sink drain contain a nasty buildup. I cleaned both sections with bleach solution and now no smell. I will definitely put this on my bi annual list of thing to do. Hopefully, this can provide assistance.
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