It occurs when the P-trap is dried out or if you don't have proper ventilation to stop sewer gases from leaking into your home. Sewer gases can make you sick because they contain hydrogen sulfide (H2S) and methane. Sometimes, gases might get pulled down into the yard, hence a foul sewage smell outside your house.Apr 21, 2021,
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.Jan 20, 2020
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.Dec 14, 2020
A sewer smell in your home is most likely caused by a buildup of sewer gas in either the plumbing or venting system in your home. A dried out p-trap is a common reason for sewer odours. P-traps that are dried out no longer prevent sewer gas from escaping your pipes. A possible fix is to pour water down your drains.
Septic odors are caused by gases in the system, including carbon dioxide, hydrogen sulfide, and methane. Not only can they be annoying, a high enough concentration of these gases can be toxic, or even explosive.Jan 27, 2016
Simply running some water can resolve the issue. The same applies for either a little used fixture, a guest house, or a vacation home. Simply running some water will fill the trap belly back up with water, and re-create the water barrier. Sometimes pouring some vinegar down a drain can help to get rid of a foul odor.Jun 23, 2014