Noticing a sewer smell in your house is unpleasant, and it’s often a sign something isn’t right with your drains. While some causes are minor, others can point to a serious drainage issue that needs professional attention.
If you’re in Stroud or the surrounding areas, Jet-Plumb deals with this exact problem every week. Here’s what that smell could mean and when to act fast.
1. A Blocked Drain (Most Common Cause)
A build-up of waste, grease, wipes, or debris can stop wastewater flowing properly. When this happens, gases that should travel safely through your drainage system can come back up into your home.
Warning signs alongside the smell:
- Slow-draining sinks or showers
- Gurgling noises from plugs or toilets
- Water levels rising in toilets
- Bad smells stronger near plugholes or outside drains
This often needs professional drain jetting to fully clear the blockage, not just a quick chemical fix.
2. Dry Or Empty U-Bend (Trap)
Every sink, shower, and bath has a U-bend that holds a small amount of water. This water acts as a barrier to stop sewer gases entering your home.
If a drain hasn’t been used for a while (guest bathroom, utility sink, etc.), the water can evaporate.
Quick fix: Run water for 20–30 seconds. If the smell stays, the issue is likely deeper in the system.
3. Damaged Or Loose Pipes
Cracked or poorly sealed waste pipes can leak gases into walls, floors, or cupboards, especially under sinks.
You might notice:
- Persistent smells even when drains run fine
- Damp patches
- Smell strongest inside cabinets
This usually needs inspection and repair rather than drain cleaner.
4. Blocked Or Damaged Outside Drains
If the smell is stronger outdoors (near gullies or manholes) the problem could be in your external drainage. Common causes in properties include:
- Leaves and debris
- Fat and grease build-up
- Wet wipes and sanitary products
- Tree root intrusion
- Collapsed or cracked pipes
Jet-Plumb uses high-pressure drain jetting and CCTV drain surveys to find and fix these issues without unnecessary digging.
5. Sewer Line Or Main Drain Problems
If multiple drains smell or you notice:
- Toilets bubbling
- Water backing up
- Smell throughout the house
You could be dealing with a main drain blockage. This can escalate quickly and should be treated as urgent.
Is A Sewer Smell Dangerous?
Sewer gases can contain substances like methane and hydrogen sulphide. While occasional faint smells aren’t usually harmful, strong or persistent odours should never be ignored, especially if anyone feels unwell.
What Should You Do First?
- Run water in unused sinks and showers
- Check for slow drainage
- Look outside for overflowing drains
- Avoid pouring harsh chemicals down! They can damage pipes and make drain repairs harder.
If the smell doesn’t disappear, it’s time for expert help.
Does Your Property Smell Like Sewage? Contact Jet-Plumb
We provide fast, professional drain unblocking and drain jetting in Stroud and surrounding areas. We use the right equipment to clear blockages properly and identify underlying problems before they get worse. Ignoring a sewage smell can lead to flooding, pipe damage, and costly repairs, but early action saves money and stress.
Contact Jet-Plumb today for reliable local drainage specialists.
