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Basement Smells Like Sewer When It Rains

When it comes to a sewage smell in your home after rain, the most common culprits are cracked pipes and clogged drains. If you have trees in your yard, roots are a common cause of cracked or broken pipes. In addition, tree roots can also crack your septic tank.

Why does my basement smell like sewer after it rains?

Raining often causes atmospheric pressure changes, which can lead to the air becoming heavy. As such, the methane gases typically found in the septic tank don’t flow through the vent as they normally would. Instead, they stay low to the ground, causing a foul smell similar to rotten eggs.

How do you get rid of sewer smell in basement?

from little use, releasing sewer gas into the basement and stinking the place up. Solution: Dump around a gallon of clean water down the drain to reseal the pipe and keep the odor out of your basement (add a mild household cleaner to the water for a fresh scent). Note: This applies to rarely-used toilets, as well.

Why does sewer smell come and go?

One of the most common causes of sewage smells is a clogged drain. When your home’s wastewater has nowhere to go, the odors will come back up the drain they should be going down.

Is it normal to smell sewage in basement?

The most common cause of sewer gas odors in a basement will be due to your home being equipped with a large basement floor drain. This drain runs deep into your sewer line, and can give off foul sewer gas odors when: There is damage present in the drain line. The drain line is clogged, or needs cleaning.

Why do drains smell when it rains?

A sewer smell in the house after rain and sewer air from drains in general comes from the anaerobic decomposition of organic substances. The dirty odours are partially stopped by a water trap in the siphon within the drains. However, when it rains heavily, the air pressure in the sewer changes quite a bit.

Why does my home smell like sewer?

If you are detecting foul sewer odors inside the house, this means that there is a weak link somewhere in your plumbing system. Possible sources include bathroom sink drains, toilets, kitchen drains, basement drains, old cast iron piping, or even the vent stack that goes out through your roof.

Why does basement smell like rotten eggs?

The distinct “rotten egg smell” comes from hydrogen sulfide. Not only is a foul sewer smell in the basement hard to tolerate, but it can also be dangerous too. The danger resulting from the foul odor of sewer gas comes from the breaking down of organic materials that are commonly found in sewers.

How do you tell if your sewer vent pipe is clogged?

How to Tell if Your Plumbing Vent is Clogged A Primer on Plumbing Vents. Water Takes A Long Time to Drain. Dry and Empty Toilet Tanks. Foul Smells. Gurgling or “Glugging” Sounds as Water Goes Down the Drain. Get Those Clogs Out of Your Plumbing Vent ASAP.

Why does it smell like rotten eggs in my basement?

Sewer gas. That “rotten egg” smell in the basement is sewer gas, or hydrogen sulfide. A gas odor can be a sign of a small problem, like a dried out water seal in a floor drain. On a bigger scale, it can also indicate a broken sewer line or vent stack.

Why does my house smell like sewer in the morning?

Sewer odor comes from the breakdown of human waste and includes harmful gases like hydrogen sulfide and ammonia. Small doses of these gases won’t harm you, but chronic exposure can be toxic. Any time your house smells like sewage, you need to identify the problem.

What do you do if your house smells like sewer?

If the smell persists, try pouring a quart of water into every drain in your home, including the sink and the toilet. If the odor remains after running water through all drains, you are probably dealing with an old or leaky P-trap. For the best results, contact a professional plumber to examine and replace your P-trap.

How do you fix a smelly basement?

You can place bowls of white vinegar, cat litter in open containers, or baking soda throughout your basement in order to absorb the stench. You should notice a more pleasant smelling basement in a couple of days.

Why does my house smell like wet dirt?

Musty smells in houses may be attributed to several causes, including: Mold and mildew: Leaky pipes, a damaged roof, high humidity, and exposed dirt in the crawlspace may all contribute to moisture buildup. This moisture combined with the stagnant air and dark corners can lead to the growth of mold and mildew.

What does methane sewer gas smell like?

Actually, sewer gas is mostly methane which is odorless but it’s almost always mixed with other gases, the most common of which is hydrogen sulfide which has a rotten egg smell. Hydrogen sulfide comes from decomposing organic matter. Natural gas, for that matter, is odorless too.

Why does my house smell like septic?

A septic odor in your home usually means there’s a plumbing problem, but not all issues require calling a plumber. The floor drain trap in your basement could be dried out, allowing septic tank gases to vent back into your house. The vent equalizes the pressure in the drain pipes as wastewater moves through.

Why does my house smell like rotten eggs?

Rotten Egg Smell If you come home one day and smell rotten eggs, it’s most likely hydrogen sulfide — the smell of sewer gas. You might have heard that rotten eggs indicate a natural gas leak and that the smell means you should evacuate and call 911.

How do I get the rotten egg smell out of my basement?

If the dry trap is to blame, the fix is simple: Just turn on the faucet a few seconds and let the water drain out. The water will fill the trap and effectively block sewer gases. If the smell is strongest in your basement, the floor drain trap may have dried out.