If you notice sewer smell coming from your septic tank vent, don't assume that you have serious problems with your septic system. As we mentioned earlier, hydrogen sulfide is a normal by-product of the breakdown of wastes occurring within your septic system.,
Inspect and Pump Frequently The average household septic system should be inspected at least every three years by a septic service professional. Household septic tanks are typically pumped every three to five years.Oct 11, 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
It stays low to the ground due to the atmospheric pressure and it may smell like rotten eggs. 2) After a septic pumping, it will smell like rotten eggs, also known as methane gas, which will dissipate after a half hour.
A sewer smell outside your house can mean that the city sewer is backed up. But if the smell is constantly present it can have to do with your roof leader line outlets, or area drains. Although storm sewer systems should not contain sewer gases, sanitary and combined sewer systems do.Jun 23, 2014
Extending the vent pipe can help diffuse the odors, carrying them away from the yard. Carbon filters can also be placed on the top of the vent to help control odor. The filters do need to be changed regularly (typically annually) to be effective. It is important that these filters not obstruct the flow of air.Mar 25, 2021
It's normal to occasionally notice a weak smell near the septic tank, but a strong odor could be a sign of a leak from the manhole. Check the risers and manholes to make sure they're covered securely. The tank manhole cover is usually a concrete lid, but it could also be metal or plastic.Jan 27, 2016