Why Do Septic Tanks Smell When It Rains?

When it rains, the air becomes heavy and doesn’t allow for proper release of methane gases through your vent. As a result, the gases stay low to the ground with the atmospheric pressure, which results in a foul smell. If you have a loose toilet gas ring somewhere in your home, the added pressure from the rain can push these gases through into the house resulting in a bad smell. Even the tiniest hole can allow methane gases to leak.

Change in Atmosphere

When it rains, the air becomes heavy and doesn’t allow for proper release of methane gases through your vent. As a result, the gases stay low to the ground with the atmospheric pressure, which results in a foul smell. If you have a loose toilet gas ring somewhere in your home, the added pressure from the rain can push these gases through into the house resulting in a bad smell. Even the tiniest hole can allow methane gases to leak.

Rain Saturation

Another thing that happens when it rains is the ground becomes saturated, which, in turn, impacts your drain field. A saturated drain field can create signs of septic problems as well. Heavy rains result in a rise of the liquid level in your septic tank, which increases backpressure on gases in the tank. These gases have nowhere to go but into the drain, vent, and waste system in your home.

rain saturation

How to Stop the Smell

The easiest thing to do in preventing septic smells like this is to frequently run water through your drains. Typically, houses with more than one bathroom suffer from septic smells more often when it rains because one of the bathrooms is used less often. By running water in all your sinks, showers, toilets, and drains every couple of months, you can prevent this kind of issue.

Should you experience any signs of septic problems, call us right away. Dealing with the issue early is key in making sure your home is back to normal in no time.