The level keeps dropping
You refill it repeatedly even when use has not increased and there has been no unusual splash-out.
Water-loss diagnosis · Tenerife South
Pool leak detection in Tenerife.
If you keep topping up the pool, the useful question is not just whether it leaks, but where the water is going. We inspect the pool systematically before recommending a repair.
First diagnosethen decide how to repair
Pool + equipmentnot just the visible surface
EN · ESAdeje and Tenerife South
Clues, not proof
Signs that your pool may be leaking.
One symptom on its own does not confirm a leak. Several signs together, or a measured difference against evaporation, justify a proper diagnosis.
Automatic filling runs often
An auto-fill can hide the loss because it restores the level before you notice it. Water consumption becomes the clue.
Wet or soft areas appear
Persistent dampness near the pool or equipment can be relevant, although underground water does not always surface nearby.
The pump loses prime
Air in the suction side or repeated priming problems can point to a hydraulic issue, but the equipment must also be checked.
Water stops at one height
If the loss slows around a skimmer, return, light or another fitting, that level can help focus the inspection.
Water balance changes faster
Constant fresh-water top-ups dilute treatment. Needing more chemicals is a consequence to investigate, not proof by itself.
A useful first check
Evaporation or a real pool leak?
Sun, wind, humidity, water temperature and use all change evaporation. That is why a fixed number of millimetres per day is less useful than comparing the pool with a bucket exposed to the same weather.
- Turn off automatic filling. Bring the pool to its normal operating level and choose a day without rain or very strong wind.
- Place a bucket on a stable step. Add pool water and mark the level inside the bucket and the pool level outside it.
- Compare after 24 hours. If the pool drops further than the water in the bucket, there may be a leak worth diagnosing.
This comparison follows the principle in the US EPA outdoor pool water-efficiency guide (PDF). It confirms abnormal loss; it does not locate the fault.
A pool is a complete system
Where can a swimming pool lose water?
The water may leave through the structure, a fitting, the equipment area or an underground circuit. The same symptom can therefore have very different repairs.
Shell and waterproofing
Cracks, joints, liner damage, grout deterioration or a weak point around a structural movement.
Skimmer and built-in fittings
Skimmer throat, returns, suction points, light housings, main drain connections and their seals.
Equipment area
Pump unions, filter connections, valves, dosing equipment, heater connections or the waste/backwash route.
Buried plumbing
Suction and return circuits can lose water underground without leaving an obvious wet patch at the break.
Overflow and balance systems
Overflow channels, balance tanks and level controls can send water away even when the pool shell is sound.
Automatic filling
A faulty level control may mask a pool leak or itself cause water to run continuously towards an overflow.
A diagnosis with order
How we approach pool leak detection.
The exact checks depend on the pool. The purpose is to separate possible causes before any disruptive repair is proposed.
- 01
Understand the pattern
We ask when the loss started, how much the level drops, whether it changes with the pump, and what work or faults came before it.
- 02
Inspect the visible system
We review the waterline, accessible fittings, equipment pad, valves and obvious paths that could explain the loss.
- 03
Separate structure, equipment and pipes
Targeted checks help determine whether the likely source is the pool body, an accessible component or a plumbing circuit.
- 04
Explain the result and next action
You receive a clear conclusion and, where appropriate, a repair proposal focused on the affected area rather than guesswork.
When a pipe is suspected
A pressure test answers a more specific question.
Leak detection looks at the whole pool. Pressure testing isolates plumbing circuits to check which line holds and which one loses pressure. It is one diagnostic method, not a synonym for the complete service.
Local service
Pool leak detection in Adeje and Tenerife South.
We assess private pools, rental villas and community pools in Adeje, Costa Adeje, El Madroñal, Roque del Conde, Fañabé, Callao Salvaje, Abama, Arona, Playa de las Américas, Los Cristianos, Chayofa, San Miguel and Golf del Sur.
Send the location and the behaviour of the water level first. This helps us decide whether the initial visit should focus on the pool body, equipment or plumbing.
Send the details through the contact pageBefore arranging a visit
Pool leak detection FAQ.
Clear answers about evaporation, diagnosis and what happens after the source is narrowed down.
How can I tell evaporation from a pool leak?
A controlled bucket test compares the drop in the pool with water exposed to the same weather in a bucket. If the pool level falls further, there may be a leak. Turn off automatic filling and avoid rain or very strong wind during the comparison.
Does the pool have to be emptied to find a leak?
Not in every case. Many initial checks can be made with the pool at its normal level. Whether water must be lowered depends on the suspected area, access and the test required.
Can leak detection identify the exact fault?
The diagnostic process separates likely causes and narrows the affected area. A pressure test can show which plumbing circuit is losing pressure, although a further location step may be needed to identify the exact underground point.
Is the repair included in leak detection?
Diagnosis and repair are separate decisions. Once the likely source is known, we explain the result and prepare the appropriate repair proposal instead of opening or replacing parts blindly.
How long does a pool leak inspection take?
It depends on the pool size, the number of circuits, access to the equipment and how the water behaves. We review the case first and tell you what should be checked before arranging the visit.
What information should I send before the visit?
Send the location, approximate pool size, how much the level drops in 24 hours, whether automatic filling is on, whether the loss changes with the pump running, and clear photos of the pool and equipment area.