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Is the loss of 4 to 5 inches of water from my pool daily excessive?

Andrew Dunn
Swimming pool

Water leaks from pools are commonly found in the plumbing or the pool liner. (StarNews file photo)

Yes, it’s excessive. You almost definitely have a leak.

While it’s hard to say exactly how much water should evaporate in a day, 4 to 5 inches is much higher than normal, said Alex Vonsiatsky, owner of Tidewater Aquatics.

There are a few ways to test it, though.

To make sure it is a leak, you can perform what is known as a “bucket test.”

Put a bucket on the top step of your pool, and fill it with water so it matches the water level of the pool. The next day, compare the water levels. If the water in the bucket is higher than in the pool, you’ve got a leak.

Now you need to determine what kind of leak you have. First test to see if it’s in the plumbing, Vonsiatsky said. Plug the lines, and use an air compressor to pump up the pressure in them. If the pressure holds, your lines are secure and you should move on to the next test. If the pressure falls, that’s where your problem is.

The other kind of leak is in the shell of the pool, and that’s more difficult to pinpoint, Vonsiatsky said. The best way is to squirt dye in areas where you would suspect a leak to occur, like around lights or drains.

Of course, if that seems a little difficult, most pool maintenance companies will take care of it for you.

User-contributed question by:
John McEntee Sr.

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2 Responses to “ Is the loss of 4 to 5 inches of water from my pool daily excessive?”

  1. On July 2, 2011 at 10:25 am Chuck wrote:

    You definitely have a leak. Evaporation should be less than an inch/day. I had a leak in my pool and it took me 3 years to find it. The leak was around the outside (periphery) of the inlet pipe, where the pipe enters the pool.I caulked it up and everything was fine. So, if the other fixes recommended don’t work don’t, look there.

  2. On July 4, 2011 at 7:25 pm Jeff wrote:

    Pressing up your plumbing with pressurized air can destroy them. If you didn’t have a leak there before you probably will now.

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