Sewer gas sulphur odor leak discovery cause repairs where a basement or crawl space floor drain or drain trap is the problem.
Bad floor drain p trap and backup.
Where a floor drain is located.
The straight hole is linked with the p trap aka haz trap that s filled with water.
Put the vacuum hose in the center hole where the water flows down the drain into the p trap.
As water goes down a drain air is needed to equalize the pressure in the drain line.
Whether the drain has a pitch or a p trap this trap can dry out allowing sewer odors to travel back up the piping into the air we breathe and smell.
If the drain lines in your home have poor venting as in figure a for example water rushing down the drains will pull water from nearby p traps.
How to diagnose basement or crawl space sewer odors due to a floor drain diagnosing repairing cast iron drain connection leak problems diagnosing sewer gas odors traced to plumbing drain deterioration questions.
The p trap is located under your concrete floor and when it dries up it will allowing the sewer gases to enter into your home.
Most of the time the sewer smell is caused because the water in the p trap has dried up or evaporated.
A sump full of debris will lead to a floor drain backup.
This will re prime the.
Take a gallon of tap water and dump it down the floor drain.
Use a wet dry shop vac only.
This is the purpose of a venting system.
But larger grating openings require more maintenance to clean debris from the trap or the drain sump.
The drain in the toilet bowl is basically a p trap.
A typical residential basement has at least one floor drain usually located near water fixtures such as a hot water heater or clothes washer.
Start sucking the dirt out from the trap using your shop vacuum.