A sewer smell in your house, coming from your bathroom, kitchen, or basement, is unpleasant. That musty drain stench, or rotten-egg odor, is also the way your sewer system is telling you something is seriously wrong. Sewer odors in the home are one of the most common calls Chen Plumbing receives, especially when paired with the Atlanta heat, which exacerbates those foul smells. The cause is sometimes a simple plumbing issue, but it can also point to a deeper problem in your drain or sewer line.
Sewer Smells Are a Warning Sign You Shouldn’t Ignore
If you’re asking yourself, why does my house smell like a sewer, the worst thing you can do is ignore it and hope it goes away naturally. Sewer smells that linger and appear in multiple locations in your home almost always point to an underlying issue in your sewer line.
Similarly, ignoring a plumbing odor problem could also lead to an unwanted sewer line backup that could be prevented.
What Causes Sewer Smells in Your Home?
Sewer odors can originate from several points in your plumbing system, and correctly identifying the source is key to fixing the problem. The most common causes of sewer smells in the home are:
- Dry or empty P-traps.
- Clogged drains with organic buildup.
- Damaged or deteriorating sewer lines.
- Blocked or broken vent pipes.
Many older Atlanta homes in areas like Inman Park, Grant Park, and Candler Park have sewer lines made of clay or cast iron. These deteriorate over time, allowing tree roots to invade pipes and cause blockages and sewer smells. Atlanta’s tree canopy is famously dense with mature oaks, and pines are known to have aggressive root systems, which is a well-known issue in the area, especially for older pipes.
Dry P-Trap: The Most Common Cause of Sewer Odors
A P-trap is the curved section of pipe beneath every single drain fixture. It’s designed to hold a small amount of standing water at all times, creating a barrier seal that blocks sewer gases from rising through the drain. This water barrier will evaporate if the drain is only used occasionally.
Luckily, a dry P-trap issue has an easy fix. Run water in the neglected fixture for 30–60 seconds. This refills the P-trap and re-establishes the seal. In drains that don’t get much use, pour a cup of water down them every month or so to prevent them from drying out.
However, if you are consistently dealing with a dry P-trap, the seal may have a crack, which requires repair from a professional Atlanta plumber.
Clogged Drains and Organic Buildup
Hair, soap scum, food particles, and grease that build up in a piping system can cause unpleasant smells from drains as the organic materials begin to break down. Bathroom sinks and showers are especially prone to sewer smells in the bathroom due to a buildup of hair being caught and pushed down in the drains.
Clogged drains can also promote the growth of harmful bacteria and mold, which can cause diseases, allergies, respiratory illnesses, and chronic fatigue. For any clog, Chen Plumbing is equipped to provide drain odor solutions through snaking or hydro-jetting to remove the clog and effectively clean the interior of your pipe.
For all your clogged drain needs, contact Chen Plumbing for a quote.
Sewer Line Problems and Hidden Damage
If the sewer odor is coming from multiple drains, it usually signals a serious problem within the sewer line. Cracks, tree root intrusions, or pipe deterioration in a home’s sewer line can allow gas to escape before it exits the home through a properly vented system. Older Atlanta homes with cast-iron or clay pipes are susceptible to this kind of damage.
Sewer line problems also tend to develop gradually, which is why you should take persistent or recurring odors or gurgling sounds seriously. To fix the sewer smell, we will feed a high-powered camera down a sewer line to locate the clog or issue causing the foul odor.
Blocked or Damaged Vent Pipes
Every drain in your home is connected to a vent pipe that allows sewer gas to escape and air into the drain system so that water flows freely. When a vent becomes blocked by debris or cracks, sewer gases can back up into your home.
Diagnosing and clearing a blocked vent, or locating a breach in the vent system, requires professional expertise and specialized tools. During a sewer inspection, we’ll also assess the condition of your home’s vent pipes and repair them when needed.
Is Sewer Gas Dangerous?
Sewer gases contain traces of methane and hydrogen sulfide, which smell terrible but are also harmful if inhaled continuously. According to the Occupational Safety and Health Administration, extended exposure to hydrogen sulfide and sewer gas, even at lower levels, has been linked to headaches, nausea, dizziness, and respiratory irritation.
If the sewer smell is strong, sudden, or accompanied by symptoms such as headaches or lightheadedness, open your windows, leave the area, and call our Atlanta team.
How to Prevent Sewer Odors in the Future
There are a few simple DIY tasks homeowners can do to prevent sewer gas in their Atlanta homes.
- Run water in rarely used fixtures and down drains once or twice a month to keep P-traps full.
- Clean drains regularly, and purchase a drain strainer to reduce buildup before it becomes a blockage.
- Avoid pouring grease or food scraps down kitchen drains.
- Schedule annual drain and sewer maintenance to catch developing issues before they become expensive emergencies.
Professional Sewer and Drain Services in Atlanta
Chen Plumbing provides a comprehensive list of sewer and drain services to homeowners throughout the Atlanta area. These include sewer camera inspections, professional drain cleaning, P-trap repair and replacement, vent pipe diagnosis, and full sewer line repair and replacement when needed. As a licensed, insured plumber, Chen Plumbing is always up to the task and boasts a quick response time.
Schedule a Sewer Inspection with Chen Plumbing Today
If you have noticed foul odors coming from your drains or your sewer line is in desperate need of an inspection, Chen Plumbing is the right professional for the job. Call us at 404-809-3213 to schedule your sewer inspection, get a quote, keep your pipes flowing, and be odor-free.
