If your pool is dropping more than a couple of centimetres a week and the weather hasn’t been especially hot or windy, there is a fair chance you are dealing with a leak rather than ordinary evaporation. We handle pool leak detection across Cape Town — from Durbanville and Panorama through the Northern Suburbs, the Southern Suburbs and out towards Somerset West — and most calls start the same way. The auto-filler seems to run non-stop, the level keeps creeping down, or a patch of paving stays damp long after the rest has dried.
Finding the leak early is what saves you money. A pool can quietly lose thousands of litres before anyone connects the dots, and in a city that still keeps a close eye on its water use, that shows up on the municipal bill as much as it does on your chlorine, acid and stabiliser.
How we track down a leak without tearing your pool apart
Guesswork is expensive, so we don’t start by breaking things open. We work through the pool in a set order: first we confirm the loss is a real leak and not evaporation, then we isolate whether it is coming from the shell, the fittings or the underground plumbing.
The bucket test is the simple starting point you can even run yourself — a bucket of pool water on the top step, marked inside and out, tells us in 24 hours whether the pool is losing more than the bucket. From there we use dye testing around suspect fittings, pressure-test the suction and return lines, and listen for pressurised leaks with acoustic equipment where the pipe runs under paving or a deck. Only once we know roughly where the water is going do we open anything up, and usually that means lifting one section rather than a whole surround.
Signs your Cape Town pool is leaking
- The level drops noticeably even on cool, still days when evaporation should be minimal.
- Your auto-filler runs far more often than it used to, or the pump loses prime overnight.
- Damp soil, spongy lawn or lifting paving on one side of the pool.
- Air bubbles blowing back through the returns when the pump is running — a classic suction-side leak.
- Cracks in the marbelite or fibreglass, or rust-coloured staining weeping from a hairline.
- The water bill has climbed with no change in how the household uses water.
Where Cape Town pools tend to spring leaks
Older marbelite and gunite pools around the Peninsula move slightly as the ground shifts through our wet winters and bone-dry summers, and that movement opens hairline cracks in the shell — often around the steps or the deep-end floor. Light niches, the skimmer throat and the return fittings are the next usual suspects, because the joint between plastic and plaster is where things flex and eventually part. Underground, the suction and pressure lines can weep at a glued joint you will never see from the surface. Coastal pools in areas like Table View, Bloubergstrand and the Atlantic Seaboard also cop salt-laden air that works away at fittings faster than it does inland. We check all of it rather than assuming, because a pool can genuinely have more than one leak at once.
What leak detection and repair costs
A straightforward detection on a domestic pool is a modest, fixed call-out in most of Cape Town — the bigger variable is what the repair itself involves once we find the source. Sealing a cracked fitting or re-bedding a light niche is a small job; chasing a broken pressure line under an established paved surround is more involved. We would rather quote you honestly after we have seen it than throw out a number that changes on the day. For a full breakdown of what different leak repairs run to locally, our guide on what leak detection and repair costs in Cape Town lays out realistic ranges. If the shell itself has gone, it can be worth weighing a repair against a full pool renovation in the Western Cape.
Areas we cover
We are Cape Town based and cover the Northern Suburbs (Durbanville, Bellville, Brackenfell, Kraaifontein, Panorama, Monte Vista), the City Bowl and Atlantic Seaboard, the Southern Suburbs (Constantia, Tokai, Bergvliet), the West Coast side around Table View and Milnerton, and the Helderberg out to Somerset West and Strand. We also travel through to George and the Garden Route for leak detection and structural repairs, so if your pool is out that way the same team can help.
Frequently asked questions
How do I know it is a leak and not just evaporation?
Run the bucket test. If the pool water drops faster than the water sealed in the bucket over 24 hours, evaporation isn’t the whole story and it is worth having the pool checked properly.
Can you find a leak in the underground plumbing?
Yes. We pressure-test the suction and return lines separately and use acoustic listening gear to trace a pressurised leak, so we can pinpoint a buried pipe without digging up the whole surround on spec.
How much water loss is normal in Cape Town?
In peak summer with the South Easter blowing, a couple of centimetres a week from evaporation is normal. Consistent loss well beyond that, especially in mild weather, points to a leak.
Do you repair the leak or only find it?
Both. Detection is the first step; once we know the source we handle the repair — from sealing fittings and patching the shell through to replacing a failed section of pipe.
Think your pool is losing water? Book a free pool assessment and we will get to the bottom of it before it costs you another month of wasted water.
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