Find out why bad sewer odors occur and how to eliminate them permanently with simple, natural solutions.

Bad sewer odours: why they occur and how to eliminate them permanently

Unpleasant odors in the pipes can quickly make your home an unpleasant place to live. Kitchen, bathroom or WC: each area has its own causes… and solutions!

Before using a plunger or chemicals, it’s best to identify the source of the problem. A sink, a shower or a septic tank are not treated in the same way.

🔍 In this article, discover the main causes of unpleasant odors and the simple, lasting solutions to get rid of them.

Diagnosing unpleasant odours in pipes: Simple, Clear & Effective

Better understanding for better action

To eliminate unpleasant odours over the long term, you need to know the exact cause.
Each symptom reveals a specific malfunction… and therefore calls for a different solution.

Make your diagnosis in 1 click

  • Select the symptom that corresponds to your situation.
  • Instantly visualize possible causes and the appropriate EPUR solutions.

A simple, clear and effective tool

  • Fast, intuitive operation
  • Educational information without overload
  • Long-lasting, uncompromising results
  • Tailor-made EPUR solutions for every problem

Thanks to this diagnosis, you’ll know why your pipes smell.
👉 And, above all, how to remedy the problem naturally, without using harsh chemicals.
A healthy home starts with clean pipes, and EPUR can help.

What are your symptoms?

Persistent odor but normal flow

Probable causes ❌

  • Soap and grease deposits
  • Bacterial growth in the siphon

Our EPUR solutions ✅

Odor + stagnant water / slow flow

Probable causes ❌

  • Beginner plug (hair, grease…)
  • Reduced flow → stagnation → odor

Our EPUR solutions ✅

Sewer odor but normal flow

Probable causes ❌

  • Clogged siphon (biofilm, bacteria)
  • Gases trapped in the pipe

Our EPUR solutions ✅

Rising odors in the toilet

Probable causes ❌

  • Scale in the pipes
  • Weakened flow → gas upwelling

Our EPUR solutions ✅

Odors from the septic tank

Probable causes ❌

  • Unbalanced bacterial flora
  • Excessive gas production

Our EPUR solutions ✅

Conclusion

With EPUR, you act in the right place at the right time to eliminate unpleasant odors from your pipes. Whether the problem comes from the kitchen, bathroom, toilet or even the septic tank, each EPUR solution is designed to meet your exact needs. Thanks to their 100% natural formulas, EPUR products clean, degrease, sanitize and maintain your pipes while respecting the environment. The result: a healthier home that lasts. Gentle efficiency is our specialty.

Frequently asked questions about sewer odors

Odors come from organic deposits (grease, hair, soap), bacteria, blocked gases or an emptied siphon.

The residues stagnate and ferment, producing hydrogen sulfide, which gives the typical eggy smell.

Clean the siphon and eliminate bacteria with a suitable anti-odour treatment(Stop Odours).

Because the cork is not the cause, but a consequence: the biofilm and bacteria continue to ferment.

Warm water + grease = a perfect breeding ground for bacteria in the siphon and the beginning of the pipe.

Yes, most often linked to limescale, which narrows the duct and encourages water stagnation and gas build-up.

Yes, this indicates a biological imbalance in the pit: prompt intervention prevents overflow.

Heat accelerates bacterial fermentation and the creation of foul-smelling gases.

No. It temporarily deodorizes, but does not eliminate the bacteria or residues responsible.

Regular pipe maintenance (using suitable products, hot water and grease control) is essential.

Yes, clogs can create excessive pressure and weaken pipes.

Yes, enzymatic/biological treatments naturally sanitize pipes and septic tanks.

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