Leak Detection in Sandton, Midrand & Northern Johannesburg

If your water bill has spiked, your meter is ticking with every tap closed, or there's a damp patch you can't explain, you almost certainly have a concealed leak. Apple Plumbing & Electrical specialises in non-invasive leak detection across Sandton, Midrand, Fourways, Bryanston and Randburg. We use professional acoustic correlators, tracer-gas injection and thermal imaging to pinpoint leaks within 10–15 cm — so you only break the surface that absolutely needs to be opened.

What we do

We isolate water zones at the manifold, pressure-test each circuit individually, then triangulate the leak source using acoustic equipment. Tracer gas (a safe hydrogen/nitrogen mix) is injected for slab and underground confirmation. Thermal imaging confirms hot-water slab leaks. You receive a written, photographic report — accepted by Santam, Discovery Insure, OUTsurance, MiWay and other major South African insurers — and we can repair on the same visit where access allows.

Signs you need this service

• Water bill has doubled or tripled with no explanation
• Water meter still moves when main supply is isolated
• Persistent damp patches on internal walls or ceilings
• A warm spot on the floor tiles (hot-water slab leak)
• Cracking paint, efflorescence or salt bloom on walls
• Drop in water pressure with no other cause

Leak detection methods compared

We pick the right tool for the leak — no breaking up floors unnecessarily.

Our process

1. 1Manifold isolation and zone-by-zone pressure tests
2. 2Acoustic correlation to locate the leak source
3. 3Tracer-gas confirmation for slab and underground leaks
4. 4Thermal imaging on hot-water lines
5. 5Marked-up written and photographic report
6. 6Repair and surface reinstatement on the same visit where possible

Pricing

Standard residential leak detection R1,800–R2,800 including written report. Repair costs quoted separately on site. Most household insurance policies include leak-detection cover — we'll guide you through the claim.

Prices are indicative for Northern Johannesburg, 2026. Every job is quoted in writing on site before work proceeds.

Why choose Apple Plumbing & Electrical

We use calibrated professional-grade equipment — not borrowed acoustic mics — and combine three different detection techniques per job. Reports are insurance-grade and accepted without query by all major South African insurers. Every repair carries a 3-month workmanship warranty.

Frequently asked questions