The short answer
Check the Floor Drain First
Your basement floor drain has a trap that holds water and blocks sewer gases. If the drain hasn't been used in a while, the water evaporates, and gases rise into the room. Pour a bucket of water slowly into the drain to refill the trap. This simple step often solves the problem.
If the smell disappears after adding water, the fix is to keep the drain moist. Run water down it every few weeks, especially during dry seasons. If the odor returns quickly, the trap may be cracked or the drain line may be broken underground, which requires a closer look.
- Pour water down the floor drain
- Check other drains like sinks and tubs
- Run water weekly to keep traps filled
- Listen for gurgling sounds in pipes
Look for Leaks in Vent Pipes
Your plumbing system has vent pipes that go through the roof to release sewer gas. If one of these pipes is cracked or disconnected, gas can leak into the basement. Inspect the exposed pipes in the ceiling and walls for signs of moisture or rust, which can indicate a leak.
A plumber can test the vent system and repair any breaks. This is not a DIY job for most homeowners, as it involves working in tight spaces. If you suspect a vent issue, call a plumber to inspect and fix it.
Consider a Clogged Sewer Line
A blockage in the main sewer line can cause waste to back up and create a strong odor. If multiple drains in your basement smell, or if you notice slow draining, a clog may be the cause. Avoid using the plumbing until the blockage is cleared, as it could lead to a sewage backup.
A plumber can snake the line or use a camera to inspect for blockages. If the clog is in the municipal sewer, you may need to contact your local utility. This is a job for a professional, as handling sewage is hazardous.
Know When to Call the Pros
If you've tried the simple fixes and the smell persists, it's time to call the pros. A persistent sewer odor can indicate a more serious issue, such as a broken pipe or a failing septic system. Local water damage pros have the tools to detect leaks and assess damage.
They can also help with cleanup if there's been a sewage backup, which requires careful handling to avoid health risks. If you live in Redmond, keep the number of a trusted plumber and a water damage service handy. Acting quickly prevents further damage.
Prevent Future Odors
Regular maintenance can keep sewer smells at bay. Run water through basement drains monthly to keep traps filled. Check for cracks in pipes during routine inspections. Also, ensure that your sump pump, if you have one, is working properly, as a faulty pump can cause water to stagnate.
If you've had a sewage backup, the area needs thorough cleaning and disinfection. The pros can remove contaminated materials and dry the space to prevent mold. Consider a water damage inspection to catch issues early and protect your home.
Talk to someone now
Call (425) 407-5186 any time, day or night, and describe what happened.
Call Now (425) 407-5186Frequently asked questions
Why does the smell come and go?
The smell may come and go due to changes in air pressure or wind direction, which can affect how sewer gases escape. It could also be a sign of a partial clog that shifts. If the odor is intermittent, check for leaks and consider having the pipes inspected.
Can I fix a sewer smell myself?
You can try simple fixes like pouring water down drains and checking for visible leaks. However, if the smell persists, it's right to call a plumber or water damage pro. They have the tools to find hidden issues and ensure the problem is resolved safely.
Is a sewer smell dangerous to my health?
Sewer gas contains methane and hydrogen sulfide, which can be harmful in high concentrations. It can cause headaches, nausea, and dizziness. If you feel unwell, leave the area and see a doctor. Ventilate the space and address the source promptly.