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NFT: Odor emanating from faucet in bathroom sink. BBI DIYs

ColHowPepper : 6/30/2022 11:17 am
For weeks now, on my first use of water faucet in our bathroom, a sulfurous, unpleasant odor wafts up to my snifter. After a few seconds of running the faucet, it goes away. It does not repeat unless--again after many hours of non-use (e.g., same as overnight)--I open the faucet in the evening before bed. Taste of water is not affected except via influence of odor through nasal passages. We've had the well water tested, no red flags.

We had our septic tank (we are on well water) replaced beg. of May, but the odor pattern was not affected. The well water tank is relatively new (2021). This past w/e, I flushed the drain in that sink with copious amounts of baking soda and vinegar, and then flushed it again with clorox, using a stiff bristle brush all the way to the U-bottom of the drain, and that flushed out lots of lovely, blackish grommets. The odor may have abated just slightly, but it's still there in the pattern described.

So, what might be going on?
tia BBI plumbing and handyman experts!
Do any of the neighbors have the smell?  
Vanzetti : 6/30/2022 11:20 am : link
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some areas have high levels of natural sulfur  
Dr. D : 6/30/2022 11:31 am : link
some sulfur is actually good for you. I'm not saying don't worry about it, but it might not be bad. Then again, I believe growth of certain micro organisms can also give off a sulfur smell.

You may want to get the water tested. If so, I would suggest not having a free test by a water softener co. Instead find a local lab and bring a sample to them. It will cost a little, but you're more likely to get a real analysis.

If it really bothers you, you may end up having to install a filtration system with activated carbon. Good luck.
Vent pipe?  
Pete from Woodstock : 6/30/2022 11:38 am : link
Vent pipes run sewer gases to the roof of your home. When they get clogged with outdoor debris like snow, birds nests or leaves the sewer gas is forced back down and into your drains. Maybe go up on your roof and check them.
I had something like that happen in my old house that had a well.  
Heisenberg : 6/30/2022 11:48 am : link
some kind of contamination from a dead animal, I think? I basically had to dump a bunch of chlorine mixed with H2O down the well.

Basically, test water, disnifect, wait 7-10 days, test again,good to go.
How to disinfect well with bleach - ( New Window )
you dump a body in your tub  
pjcas18 : 6/30/2022 11:49 am : link
and now you wonder why your sink smells.

it's all pipes.

Walter White used some kind of acid that seemed to work (other than eating through his floor)
you sure the odor is not coming up from the drain?  
I Love Clams Casino : 6/30/2022 12:16 pm : link
If maybe, try these -
de-stinkifiers - ( New Window )
I have the same problem occasionally. Even had the water department  
Giants61 : 6/30/2022 12:46 pm : link
come out and test the water. It is the drain; I now keep a cheap bottle of bleach on hand and pour a little bleach into the drain and let it sit for a while before I flush the drain with clean water. I do this as maintenance.
It's the flexible hose  
Joey in VA : 6/30/2022 12:55 pm : link
Assuming you have those under the sink. We have well water and when the filter is dirty the water reeks andbwe change it. It's fine everywhere but the sinks in our master bathroom. We tried bleach, flushing the drain, everything. Nothing worked until we disconnected the hoses and cleaned them.
RE: Vent pipe?  
81_Great_Dane : 6/30/2022 12:56 pm : link
In comment 15744467 Pete from Woodstock said:
Quote:
Vent pipes run sewer gases to the roof of your home. When they get clogged with outdoor debris like snow, birds nests or leaves the sewer gas is forced back down and into your drains. Maybe go up on your roof and check them.
Interesting. We are having a similar issue with bad smells in our upstairs bathroom. My wife thinks it's coming from the bathtub drain, I think it's coming from the toilet fixture, which was just repaired by a plumber.

The plumber warned that it's possible that the vent pipe has cracked (the house is 87 years old and probably has the original cast iron vent pipes). However, he said the only way to check is to open up the wall — which for obvious reasons we don't want to do except as a last resort.

We had not considered the possibility that the vent pipe is obstructed on top. That is a very good tip.
plumbers have told me  
djm : 6/30/2022 12:59 pm : link
baking soda and vinegar is not the best idea, but I can't remember the reasons why. You're better off snaking the pipes. I had similar issues in my lower level bathroom shower drain -got it snaked and no more stinky. I wanna say the baking soda and vinegar combo just swishes the shit around but doesn't really eliminate it and can actually make things worse.

Snake it.
.......  
CoughlinHandsonHips : 6/30/2022 12:59 pm : link
Did you clear out the elbow below the cabinet? Sometimes chemicals don't do the job if the blockages get thick enough?
and since you're in septic territory (like me)  
djm : 6/30/2022 12:59 pm : link
by all means do not use bleach.
I immediately thought you meant  
MNP70 : 6/30/2022 1:33 pm : link
Rougned Odor
Sorry, the wife dragged me away from 'puter  
ColHowPepper : 6/30/2022 1:33 pm : link
will catch up, thank you guys, interesting leads.
you mentioned you had your septic tank replaced  
Giantsfan79 : 6/30/2022 1:41 pm : link
did you do anything with the drainfield?

Do you get a gurgling sound when water goes down the drain?

How is your new septic tank working? Is it backing up at all?

Is the grass above your drainfield more lush and green then other parts of your yard?
RE: and since you're in septic territory (like me)  
Giantsfan79 : 6/30/2022 1:44 pm : link
In comment 15744568 djm said:
Quote:
by all means do not use bleach.


if you say this because you are suggesting that the bleach will kill the bacteria, then you may have fallen victim to the marketing of bacteria companies.

While it is true that a cap of bleach can kill the bacteria in your septic tank, what you aren't told is that within a day all of the bacteria have regenerated naturally. Those suckers just don't stay dead for long.
RE: Vent pipe?, Vanzetti, Dr. D  
ColHowPepper : 6/30/2022 1:48 pm : link
In comment 15744467 Pete from Woodstock said:
Quote:
Vent pipes run sewer gases to the roof of your home. When they get clogged with outdoor debris like snow, birds nests or leaves the sewer gas is forced back down and into your drains. Maybe go up on your roof and check them.


Pete, as Dane mentions below, that is an interesting tack. Wife won't let me scale the roof anymore (I'm 75, she's afraid she'll lose me, can't imagine why--she's always telling me what a pain in her arse I am). And most of the roof is really aged, worth a look see. Thank you

Vanzetti, not that I'm aware of, and they prolly wouldn't tell me of a stinkyproblem. ):
RE: some areas have high levels of natural sulfur  
ColHowPepper : 6/30/2022 1:50 pm : link
In comment 15744452 Dr. D said:
Quote:
some sulfur is actually good for you. I'm not saying don't worry about it, but it might not be bad. Then again, I believe growth of certain micro organisms can also give off a sulfur smell.

You may want to get the water tested.
Sorry, I omitted reply to you: as in OP, we had water tested some weeks ago, no red flags.

And to djm's caution re. not using bleach in a septic system, it was the water tester who recommended the bleach, rightly or not.
Check your P-Trap  
allstarjim : 6/30/2022 1:53 pm : link
For moisture under the sink.

The P-Trap is supposed to keep water in the trap which blocks unpleasant smells from coming up the pipe into your house.

This can happen when a faucet/sink gets so little use that the water evaporates, or you have a small leak that is compromising the trap's effectiveness. Cheap fix if that's the issue.
RE: you sure the odor is not coming up from the drain?, Heisenberg, pj  
ColHowPepper : 6/30/2022 1:55 pm : link
In comment 15744511 I Love Clams Casino said:
Quote:
If maybe, try these - de-stinkifiers - ( New Window )

Clams, it's my belief it is related to the drain, and I flushed the heck out of it Monday (with bleach after the baking soda/vinegar); I used a long handle, stiff bristled brush that's long enough to get to the U-bottom, jerked it off up and down to a faretheewell. Improved but not eliminated.

pj, you have designs on my body?

Heisenberg, I don't think it's the well--water recently tested, no flags, and that wouldn't compute with only (afaik) the one faucet having this issue.
Nvm  
allstarjim : 6/30/2022 1:55 pm : link
Reading this again it sounds like the smell comes from the water when you run it.

Time to invest in a water softener?

Just sounds like hard water.
RE: It's the flexible hose; 61; Dane  
ColHowPepper : 6/30/2022 1:59 pm : link
In comment 15744556 Joey in VA said:
Quote:
Assuming you have those under the sink. We have well water and when the filter is dirty the water reeks andbwe change it. It's fine everywhere but the sinks in our master bathroom. We tried bleach, flushing the drain, everything. Nothing worked until we disconnected the hoses and cleaned them.

We have that kind of hose at the kitchen sink, and it's old, but no odor there.

61, I think I did a reasonably thorough job on the drain, but, yeah, there could be a residue that I didn't catch.

Dane, our hose is older too, 66 years. Yeah, wouldn't want to tear out walls to access a pipe unless 100% sure, if there is such a thing on old houses
RE: .......  
ColHowPepper : 6/30/2022 2:02 pm : link
In comment 15744567 CoughlinHandsonHips said:
Quote:
Did you clear out the elbow below the cabinet? Sometimes chemicals don't do the job if the blockages get thick enough?

As much as I could with a ~ 18" long handle attached to stiff bristle brush. It definitely got to the bottom of the U, but maybe not long/flexible enough to complete a turn for the 180. Tis true
RE: you mentioned you had your septic tank replaced  
ColHowPepper : 6/30/2022 2:04 pm : link
In comment 15744638 Giantsfan79 said:
Quote:
did you do anything with the drainfield?

Do you get a gurgling sound when water goes down the drain?

How is your new septic tank working? Is it backing up at all?

Is the grass above your drainfield more lush and green then other parts of your yard?

Gf79 thanks; the field checks out, told by the guy who replaced the tank that it's good, actually by two testers.

Gurgling sound in our br toilet, but not the sink, but afaik no odor from toilet.
RE: Check your P-Trap  
ColHowPepper : 6/30/2022 2:07 pm : link
In comment 15744650 allstarjim said:
Quote:
For moisture under the sink.

The P-Trap is supposed to keep water in the trap which blocks unpleasant smells from coming up the pipe into your house.

This can happen when a faucet/sink gets so little use that the water evaporates, or you have a small leak that is compromising the trap's effectiveness. Cheap fix if that's the issue.
that's interesting too, jim, cuz as I say, odor only seems present in the AM first use or at bedtime when we may not have used the faucet much during the day.

What is that fix? thank you
RE: Nvm  
ColHowPepper : 6/30/2022 2:09 pm : link
In comment 15744656 allstarjim said:
Quote:
Reading this again it sounds like the smell comes from the water when you run it.

Time to invest in a water softener?
Just sounds like hard water.

We definitely have hard water, always cleaning fine mesh filters on the washing machine.

Would hard water generate a sulfur oder?
RE: RE: Check your P-Trap  
allstarjim : 6/30/2022 2:24 pm : link
In comment 15744679 ColHowPepper said:
Quote:
In comment 15744650 allstarjim said:


Quote:


For moisture under the sink.

The P-Trap is supposed to keep water in the trap which blocks unpleasant smells from coming up the pipe into your house.

This can happen when a faucet/sink gets so little use that the water evaporates, or you have a small leak that is compromising the trap's effectiveness. Cheap fix if that's the issue.

that's interesting too, jim, cuz as I say, odor only seems present in the AM first use or at bedtime when we may not have used the faucet much during the day.

What is that fix? thank you


Btw I am a complete layman, just picked up some knowledge from home inspectors from working in the real estate biz.

First just check the trap. That's the u-shaped pipe under the sink (or a 'P' on it's side). Any moisture? Just replace the trap. Your local hardware store will have what you need.

In some older homes perhaps you don't even have a trap. You should add one. This might involve cutting the pipe. If this isn't a job you're comfortable with, just about any hamdyman will suffice.

If it's just coming from the water from the sink, it's because your water probably just has sulfur in it. You can live with it as you've had your water tested and it's safe, but if you don't want to, probably need to get a softener, which can be pricey but it's an investment. We have one and it's great. Better for your skin, too. I love it, the water just tastes better.
just replace the trap...  
ColHowPepper : 6/30/2022 2:29 pm : link
But that sounds like a big deal, i.e., cutting that pipe below the sink in two places and replace that section with a new trap. Definitely not going to try that on my own, and sounds plumber like expensive, as in several $00 dollars, $500?
We had a similar problem  
VTChuck : 6/30/2022 3:26 pm : link
With our home in Vermont. Very deep (500+') drilled well.

Smell was caused by a harmless, but stinky anaerobic bacteria. The solution was chlorine injection into a mixing tank followed by carbon filtration (to remove the chlorine)

Many homes in our valley had the same problem.

Important point: All the water throughout the house had this issue.
RE: We had a similar problem  
ColHowPepper : 6/30/2022 4:03 pm : link
In comment 15744806 VTChuck said:
Quote:
With our home in Vermont. Very deep (500+') drilled well.
Smell was caused by a harmless, but stinky anaerobic bacteria. The solution was chlorine injection into a mixing tank followed by carbon filtration (to remove the chlorine)
Many homes in our valley had the same problem.
Important point: All the water throughout the house had this issue.

Chuck...500' well, wow, why, what for? Not like VT is typically water poor.
Before we got back the results of the water test (benign), the tester said if you do wind up having an E-Coli issue, then you'll 'chlorine shock' the well, add a large infusion of chlorine to kill bacteria and let it filter through the system
Ya  
oghwga : 6/30/2022 4:04 pm : link
You turn off your water and some stats behind in the faucet, some of it evaporates, and you get a little funky smell that stays trapped in the faucet until a new gush of water forces it, and the stink, out ahead of it.
Don't know if you had rain lately  
xman : 6/30/2022 4:08 pm : link
but just use baking soda in the drain
RE: RE: We had a similar problem  
VTChuck : 6/30/2022 4:37 pm : link
In comment 15744877 ColHowPepper said:
Quote:
In comment 15744806 VTChuck said:


Quote:





Chuck...500' well, wow, why, what for? Not like VT is typically water poor.
Before we got back the results of the water test (benign), the tester said if you do wind up having an E-Coli issue, then you'll 'chlorine shock' the well, add a large infusion of chlorine to kill bacteria and let it filter through the system


That's where the vein was.... 250' away, a neighbors well was ~200' deep. Actually Northern NE has had quite a few drought problems over the last decade or so. We're on municipal water now, but have had rationing the last two summers. Our lawn is brown and its still June. Do you have a dug well or a drilled well?
RE: Check your P-Trap  
Kev in Cali : 6/30/2022 4:42 pm : link
In comment 15744650 allstarjim said:
Quote:
For moisture under the sink.

The P-Trap is supposed to keep water in the trap which blocks unpleasant smells from coming up the pipe into your house.

This can happen when a faucet/sink gets so little use that the water evaporates, or you have a small leak that is compromising the trap's effectiveness. Cheap fix if that's the issue.


I have this happen at times. The P trap uses water to prevent septic odors from coming back up through my drains. Because I never use my upstairs washrooms, the water eventually evaporates out of the P trap and the odors stink up the place. I just need to make sure I use, or run water through everything about once a month.
Pretty sure it's drilled  
ColHowPepper : 6/30/2022 4:43 pm : link
and apparently it was never a great producer, but other than when a numbnuts contractor leaves the water gushing after leaving the site, we have not had a problem.

If you don't mind me asking, where (generally) in VT are you? South near Brattleboro, middle WRJunction, Woodstock, Burlington? A lot of rural VT does not have municipal source.
RE: Ya  
ColHowPepper : 6/30/2022 4:46 pm : link
In comment 15744879 oghwga said:
Quote:
You turn off your water and some stats behind in the faucet, some of it evaporates, and you get a little funky smell that stays trapped in the faucet until a new gush of water forces it, and the stink, out ahead of it.


That very much seems to describe the dynamic. Thanks
RE: Pretty sure it's drilled  
VTChuck : 6/30/2022 5:17 pm : link
In comment 15744931 ColHowPepper said:
Quote:
and apparently it was never a great producer, but other than when a numbnuts contractor leaves the water gushing after leaving the site, we have not had a problem.

If you don't mind me asking, where (generally) in VT are you? South near Brattleboro, middle WRJunction, Woodstock, Burlington? A lot of rural VT does not have municipal source.


The place I'm talking about is about 20 miles north of White River Jct. You're right, unless you're living in a community or the Burlington area, you've got a well, a septic and likely a dirt road in front of your house. We had a 200 year old brick farmhouse, a red barn and 5 acres. 32 years. Got to be too much for us, very isolated (especially in the winter) and increasingly unsafe. We're now in NH, a mile from WRJ and the VT border.
ColHow  
Joey in VA : 6/30/2022 5:42 pm : link
We have those hoses in every sink, but our master bathroom is the only one with the odor is that one. If everything else is fine it's not the source, it's local. I'm telling you, you are way overthinking it. It's sediment build up in that sinks hoses. If your entire body felt fine but had a smelly finger why would you look beyond the finger?
Joey  
ColHowPepper : 6/30/2022 5:52 pm : link
I tend to agree, and think you and oghwa are on same page. Ran my finger under the faucet opening and it's not a wide open outlet, it has a fine mesh screen over the opening. I've no idea how to access and remove it, but I may try some high pressure squirting of some sort from outside in.
RE: RE: Check your P-Trap  
cjd2404 : 7/1/2022 8:53 am : link
In comment 15744929 Kev in Cali said:
Quote:
In comment 15744650 allstarjim said:


Quote:


For moisture under the sink.

The P-Trap is supposed to keep water in the trap which blocks unpleasant smells from coming up the pipe into your house.

This can happen when a faucet/sink gets so little use that the water evaporates, or you have a small leak that is compromising the trap's effectiveness. Cheap fix if that's the issue.



I have this happen at times. The P trap uses water to prevent septic odors from coming back up through my drains. Because I never use my upstairs washrooms, the water eventually evaporates out of the P trap and the odors stink up the place. I just need to make sure I use, or run water through everything about once a month.


Something for you to try.

If you add a little mineral oil down the drain, it will help "seal" the water and prevent it from evaporating. Mineral oil doesn't go rancid, and I've heard of some folks having success doing so when they are away from a property for a long period of time.
Smell  
GF1080 : 7/1/2022 9:01 am : link
We have this happen. It's just bacteria build up from brushing your teeth etc. All you need to do is spray or pour alcohol peroxide down the drain.
RE: RE: Check your P-Trap  
ColHowPepper : 7/1/2022 11:35 am : link
In comment 15744929 Kev in Cali said:
Quote:
I have this happen at times. The P trap uses water to prevent septic odors from coming back up through my drains. Because I never use my upstairs washrooms, the water eventually evaporates out of the P trap and the odors stink up the place. I just need to make sure I use, or run water through everything about once a month.
Kev, take in a tenant!
But, yeah, timing seems to be key as the odor does not emanate except after ~ 7 or more hours of non-use, but it's a bathroom sink/faucet that is used daily.
RE: RE: RE: Check your P-Trap  
ColHowPepper : 7/1/2022 11:37 am : link
In comment 15745531 cjd2404 said:
Quote:
Something for you to try.

If you add a little mineral oil down the drain, it will help "seal" the water and prevent it from evaporating. Mineral oil doesn't go rancid, and I've heard of some folks having success doing so when they are away from a property for a long period of time.
Interesting approaches here, thanks. Eventually, the oil will flush through the trap--how often do you add, as a matter of maintenance?
RE: RE: RE: RE: Check your P-Trap  
cjd2404 : 7/1/2022 7:15 pm : link
In comment 15745711 ColHowPepper said:
Quote:
In comment 15745531 cjd2404 said:


Quote:


Something for you to try.

If you add a little mineral oil down the drain, it will help "seal" the water and prevent it from evaporating. Mineral oil doesn't go rancid, and I've heard of some folks having success doing so when they are away from a property for a long period of time.

Interesting approaches here, thanks. Eventually, the oil will flush through the trap--how often do you add, as a matter of maintenance?


If probably just try it once or twice in your case. See if it does anything for the smell.
You might find it isn't the drain at all.


Most folks I've seen do it was when they traveled for an extended period of time, or in an unused area

I used to do it for a slop sink in my basement that I used only a few times a year. I'd add like a tablespoon or so.
Don't want to add to much or too often it might cause other problems in time
Roger that  
ColHowPepper : 7/1/2022 10:59 pm : link
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