Sulphur smell mystery

Help Support Plumbing Forums:

Willowridgej

New Member
Joined
Jan 17, 2022
Messages
4
Reaction score
2
Location
Central Virginia
We recently moved into a house on a well. We do have a water softener. Two of our sinks on the far side of our house produce a sulphuric smell when the cold water is turned on. The hot water on the same sinks do not have the smell. The remaining four sinks in other parts of our house does not have a problem (no smell). We did replace the faucet fixtures and supply lines recently on the two sinks in question. Any ideas as to why these two sinks would have this problem?
 

Twowaxhack

Professional
Professional
Joined
Feb 9, 2021
Messages
7,522
Reaction score
3,262
Location
United states
Investigate a chlorine injection system. I’m not even sure if that’s appropriate. I deal with city water most of the time.
 
Joined
Feb 21, 2022
Messages
12
Reaction score
2
Location
Cleveland, Ohio
take a look in you attic on the side of the house with the smell. If there's a smaller pipe running to the big pipe that goes out of the roof, then the sewer gas might not be going where it's posed to.
 

JeffreyWisc

Member
Joined
Mar 5, 2022
Messages
14
Reaction score
8
Location
Wisconsin
Research and Look for various Iron Shield whole house water filtration systems. They seem to be about the same, simple concept. They work for this issue. They basically inject air into the water… you can see the whole process various places online.

Are you getting any rust staining or black staining in those sinks? Pour a glass of the cold water and let it sit for a few days, it will probably turn yellowish.

You probably have Hydrogen Sulfide gas in the water.
 
Last edited:

Brad.smith3485

Active Member
Joined
Feb 15, 2022
Messages
25
Reaction score
5
Location
Eldersburg, MD, USA
Research and Look for various Iron Shield whole house water filtration systems. They seem to be about the same, simple concept. They work for this issue. They basically inject air into the water… you can see the whole process various places online.

Are you getting any rust staining or black staining in those sinks? Pour a glass of the cold water and let it sit for a few days, it will probably turn yellowish.

You probably have Hydrogen Sulfide gas in the water.
If that proves true and the homeowner has a tank style water heater, it's surprising that it's strictly a cold water issue and only at one or two faucets. @Willowridgej Let us know
 

JeffreyWisc

Member
Joined
Mar 5, 2022
Messages
14
Reaction score
8
Location
Wisconsin
If that proves true and the homeowner has a tank style water heater, it's surprising that it's strictly a cold water issue and only at one or two faucets. @Willowridgej Let us know
I had the exact same issues he describes and my hot water was unaffected. I believe that if it is caused by sulfur bacteria, a hot water heater kept high enough will kill the bacteria.
 
Last edited:

Brad.smith3485

Active Member
Joined
Feb 15, 2022
Messages
25
Reaction score
5
Location
Eldersburg, MD, USA
I had the exact same issues he describes and my hot water was unaffected. I believe that if it is caused by sulfur bacteria, a hot water heater kept high enough will kill the bacteria.
You're correct but he did state his well was recently shocked. That's why I raised my question. I'd need to know more about the plumbing system as it exists to further diagnose.
 

Willowridgej

New Member
Joined
Jan 17, 2022
Messages
4
Reaction score
2
Location
Central Virginia
Thanks everyone for the great feedback on this issue. I have a plumber coming out next week to do a little investigating, checking vent piping etc.
I’ll post what he thinks it is, if he can nail it down.
 
Top