American Pool Concepts

Call or Text My Cell 215-290-0760 Patrick

Leak Detection


I provide expert leak detection using state of the art listening and locating devices, for pool contractors and homeowners. With 26 years of experience I also service and renovate swimming pools.

Is the leak in the Pipes, the Pool or Both?

When I inspect a pool for loss, I check: the entire underwater surface, test the pipes, inspect the lights, hydro valves, stairs, seals, gaskets, fittings, screws and skimmer housings. Most times it is a combination of several small leaks. Call for a full inspection so all the leaks can be found and fixed.

24 Hour Test with The Filter On vs. 24 Hours with It Off

Same Loss Filter On or Off = Points toward a leak in the pool, less likely to be in pipes

Much Larger Loss with Filter On = Points toward a leak in the return piping or backwash

Larger Loss with the Filter Off = Points toward a leak in a suction pipe (skimmer or main)

Air Bubbles in the Return Water Flow

Air in the return water flow can be a sign of a broken suction pipe (skimmer or main) but most often it is an air leak in the gaskets, valves and piping prior to the pump

A Standard Inspection & Repair of a Leaking Pool Includes

Inspect the equipment pad: Check the pump, motor, filter, valves, heather, chlorinator and backwash for leaks.

Skimmers: Check the housings, the bond between the pool and the skimmer, gaskets, tiles in skimmer entrances.

Pipes: Isolate and test each pipe as permitted by existing valve and plumbing arrangement.

Stairs: Inspect fiberglass stairs, dye test the stair molding gasket and screws, check seals and gaskets around return pipes

Underwater Inspection - Vinyl Liner Pool

Visually, tactually and with detection dye, inspect the liner for: leaks, pinholes, tears, seam defects, check all gaskets, face plates and screws. Patch up to 20 holes, liners with over 20 holes may be charged extra. Insect pinholes are common in above ground pool liners and may be patched or sealed with flexible sealer.

Underwater Inspection - Gunite/Shotcrete/Cement or Fiberglass Pools

Visually, and with leak detection dye, inspect the surface of the pool shell for cracks and leaks, check every pipe fitting for leaks, check the tile surround and entrances to the skimmers.


Inspect and dye test the light conduit, ground fittings, rim seal gaskets, screws and niche housing for leaks, cracks or corroded metal.

Hydrostatic Valves

Dye test hydro valves, test and evaluate valve function, clean seals, replace gaskets and/or replace entire valves.

Main Drain Pipes, Sumps, Drain Safety Covers

Isolate and test the main drain pipe(s), check the sump for leaks, evaluate the main drain safety cover for function, properly secured, make recommendations for upgrading to VGB certified covers.

If You add more than 1" of water per week, YOU HAVE A LEAK!

Call for sevice so I can quickly find and fix all the leaks and prevent serious damage to your pool. A leak as small as 1/4" per day from an average 16 x 32 pool will leak 29,200 gallons / year! Always check your pool level for loss before closing it in the fall. Leaks that go unrepaired can cause severe damage to the wall structure, undermine the bottom, or damage a liner beyond repair. NEVER ALLOW A POOL TO DRAIN DOWN LOW OR EMPTY!

American Pool Concepts
Skimmer Replacement
American Pool Concepts
Hole in old skimmer
American Pool Concepts
metal skimmer line deteriorated
American Pool Concepts
Flex pipe kinked due to chlorine in skimmers
American Pool Concepts
Flex pipe kinked due to chlorine in skimmers
American Pool Concepts
Skimmer cracked & leaking

Never put chlorine in your skimmers!!!

American Pool Concepts
This is your skimmer line, when u put chlorine in your skimmer


  1. Bring the pool water to normal level. Fill a 5-gallon bucket with pool water to approximately 2" from the top.
  2. Place the bucket on the first or second step of the pool. Ensure the bucket is immersed in the pool at least 5 inches.
  3. Mark the water level inside the bucket.
  1. Shut off the pump and auto fill and mark the pool water level on the outside of the bucket.
  2. Resume normal pool pump operation.
  3. After 24 hours, compare the two water levels. If the pool water (outside mark) goes down more than the bucket's water level, there is probably a leak. If levels are the same, only evaporation has occurred.

In case of rain, repeat the bucket test. Expect water loss from normal evaporation. Test is invalid after 24 hours.

Typical Evaporation

A quarter inch of water loss per day is more likely evaporation. The evaporation rate in your area will depend on humidity, sunlight intensity, barometric pressure, wind and the level of activity in the pool or spa.

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