
Commercial Pool Leak Detection
in Durban, Ballito and Umhlanga
School Pools, University Sports Centre Pools, Public Pools and Resort Pools.

Public and commercial pools cannot afford to lose water. For schools, hotels, resorts and municipal facilities across KwaZulu-Natal, we provide specialist commercial pool leak detection that minimizes downtime and avoids closing your facility.We are not general plumbers adapting domestic tools. We are pool specialists first, with commercial diving gear, high-volume pressure rigs and acoustic equipment built for large-volume pools. That is why we are trusted for complex projects from Durban to Pretoria.
Where Commercial Pools Leak
- Between tiles and in grout lines
- Expansion joints and construction joints
- Around bottom drains and hydrostatic valves
- Skimmer throats and gutter systems
- Underground plant room pipework
We dive the pool fully operational, so you do not need to drain 500,000 litres to find a leak.


Our Proven Track Record
We have completed underwater leak detection for prominent clients including Warmbaths High School and the University of Pretoria Hillcrest Sports Centre.
These projects required precise detection in deep ends and under starting blocks without disrupting training schedules.
Our commercial clients choose us because we understand operational pressure. A closed pool means lost revenue and unhappy members.
Our Domestic Pool Leak Detection Process
We isolate and pressure test all high-volume lines at commercial pressures. This identifies which circuit is losing water.
Step 2: Tracer Gas Introduction
If a drop is detected, we introduce a safe hydrogen-nitrogen tracer gas. The gas escapes only at the leak point.
Step 3: Gas Detection and Acoustic Listening
Our sensitive sniffers locate gas through concrete decks. For elusive leaks, our team uses wireless acoustic headphones to hear water movement through thick concrete slabs.
Step 4: Underwater Dye and Visual Inspection
Our certified divers perform a full underwater inspection using dye testing around fittings, lights and joints. We mark every leak with a weighted marker for your contractor.
Step 5: Strategic Access (only if needed)
For leaks under concourses, we drill small 10mm pilot holes to release trapped gas, avoiding large-scale breaking. This is far less invasive than traditional methods.
You receive a comprehensive report with leak locations, photos, video and a prioritized repair plan within 24 hours.
Key Benefits for Facility Managers
- Accurate leak detection: find all leaks in one visit, not three
- Reduced downtime: most testing is done with the pool full and operational
- Cost-effective repairs: pinpoint locations prevent unnecessary demolition of decks
- Minimized water loss: critical for municipal compliance and water restrictions in KZN
SPEAK TO AN EXPERT – Call 082 338 9748
Commercial vs Domestic Pool Leak Detection
Service Areas
- Durban
- Umhlanga
- Ballito
- Pietermaritzburg
- Richards Bay
and surrounding areas. National projects undertaken on request.
Frequently Asked Questions
In most cases, not at all. Pressure testing is done from the plant room and diving inspection happens during off-peak hours.
Can you test heated pools and therapy pools?
Yes. Our equipment is rated for heated water up to 40°C and we regularly test hydrotherapy and learn-to-swim pools.
Do you work with our maintenance contractor?
Yes. We provide a marked-up plan showing exact leak points so your contractor can quote accurately.
What about leaks in the balance tank?
Balance tanks are included in our standard commercial testing protocol.
How much does commercial pool leak detection cost?
Pricing is based on pool volume and number of circuits. Contact us for a site-specific quote for your facility in Durban or Ballito.
Book a Commercial Pool Assessment
Stop water loss and prevent structural damage to your facility. Contact Fornez for specialist commercial pool leak detection in KwaZulu-Natal.