Sewer leaks are a health issue before they are a plumbing one, and they usually announce themselves by smell rather than by water.
Smoke testing finds the escape point fast. Full service range at Leak Detection Johannesburg.
Tell us where the smell is strongest and whether it is worse in wind or rain.
Get a Sewer Leak QuoteWhere Sewer Odour Comes From
- A cracked or displaced foul line under the building or the garden.
- A dry trap in a seldom-used shower, basin or gully.
- A failed or missing vent pipe, so the system cannot breathe.
- An open or badly sealed inspection chamber cover.
- Storm water wrongly connected into the sewer, which the by-law prohibits.
Smoke Testing
Non-toxic smoke is introduced into the line under low pressure. Wherever it escapes, that is your defect: through a crack, an open joint, a dry trap or a missing seal. It maps the whole system in one visit and is by far the quickest way to trace an intermittent smell.
Sewer Leak Detection Prices in Johannesburg
| Job | Indicative range | What moves it |
|---|---|---|
| Smoke test for odour tracing | R1,200 – R3,200 | Whole system in one visit. |
| CCTV survey of the foul line | R1,200 – R2,800 | With recorded footage. |
| Air test on a sewer section | R950 – R2,400 | Proves whether it holds. |
| Vent pipe repair or installation | R1,800 – R5,500 | Common cause of persistent odour. |
| Trap or gully replacement | R950 – R2,800 | Dry and failed traps. |
| Sectional sewer repair by relining | R4,500 – R12,000 | No excavation. |
| Excavate and replace foul line | R1,500 – R3,500 per metre | Plus surface reinstatement. |
These are indicative market ranges, not a quotation. They are compiled from published South African leak detection and plumbing pricing to give you a starting point for budgeting. They are not the rate card of any company on this platform.
Storm water discharging into the sewer is a by-law contravention and a compliance failure item on a water certificate. It is worth checking before a property transfer, not during one.
Related Services
Frequently Asked Questions
Why does my house smell of sewage only sometimes?
Intermittent odour usually means a dry trap or a venting problem rather than a broken pipe. Both change with wind, temperature and how recently the fixture was used, which is exactly the pattern people describe.
Is sewer smoke testing safe indoors?
The smoke used is non-toxic and leaves no residue. It is standard practice on occupied properties, though you will be asked to ventilate afterwards.
Who repairs the sewer connection in the street?
The City of Johannesburg is responsible from the connection point outward. Everything on the property side is the owner's. A CCTV survey establishes which side the defect falls on.
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