Quick answer
Sewage backing up into a shower, gully or yard is a main-line blockage, and in older Johannesburg properties it is usually tree roots, a collapsed clay pipe, or a municipal blockage downstream. Stop using every water outlet in the house immediately — every flush, shower and washing load adds directly to what is coming back up. This is a health-hazard category call-out, not a next-available appointment.
Common causes
- Tree roots in an older clay sewer line, the most common cause on established properties
- Collapsed or cracked clay sewer pipe
- Municipal main-line blockage downstream of your connection
- Fat and debris build-up closing the bore of the main line
- Foreign objects flushed and lodged at a bend or junction
What you can do now
- 1Stop running water anywhere in the house — every discharge makes it worse
- 2Keep people and pets away from the affected area; this is contaminated water
- 3Check whether the outside inspection eye is also full, which confirms the blockage is downstream of the house
- 4Photograph the extent before any clean-up for insurance purposes
- 5Do not attempt to open a surcharged inspection eye yourself
When to call a professional
Call immediately. Sewage backup is a health hazard and the volume increases with every hour the line stays blocked. A drain specialist will locate and clear the blockage, then run a CCTV survey to establish whether roots or a collapse caused it. If the municipal main is at fault, the report is what you need to escalate it to the council.
Typical cost in Johannesburg
High-pressure jet R1,400–R2,800 · Pipe replacement quoted separately
Indicative ranges only. We provide written, itemised quotes before any work.
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