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Thread: Pool Leak - Losing 3" a week

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    Pool Leak - Losing 3" a week

    This is my first post to this forum, although I used the info here extensively in researching my pool. We opened the pool on July 4th. We've been losing about about 3" per week. We have a cover. The builder has on many occasions claimed to have found and fixed the leak. Each time they "fix" it, they turn the auto fill back on right away, which is unbelievable to me. So I turn it back off and we notice the same level of water loss.

    But last week finally gave up and said everything is fine and that 3" is normal after all. He said that is about what his pool loses. We have a cover. So now he wants his final payment. They've done a pressure test. He's checked the surface of the pool. What are my options? Do I get an independent inspection?
    18'6" x 36'6" Grecian In-ground
    27,000 gal. (give or take)
    Sand Filter
    Polaris
    Solar Cover

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    Join Date
    May 2007
    Location
    Rocklin, Ca
    Posts
    467

    Re: Pool Leak - Losing 3" a week

    Sorry to hear about your leak. Good thing you have not made the final payment.

    Have you done the bucket test?
    11000 Gals, Intelliflo, Sta-Rite Cartridge, Polaris 360

    Pool I built in my old house: my-new-pool-build-t4534.html

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    spishex's Avatar
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    Oct 2008
    Location
    Hillsborough, NC
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    1,375

    Re: Pool Leak - Losing 3" a week

    3" per week is possible from evaporation in very warm months. Where are you located?

    You can always check the evaporation rate by leaving a bucket on the top step filled up to the water level of the pool, then watch the evaporation rate of both bodies of water. It's also a good idea to check your waste line to be sure that's not where the water is going.

    I would hold that check until you get a better answer, at least from the evaporation test. Sounds fishy that he would have tried multiple times to fix a leak and then give up and call it normal.

    There are leak detection companies like American Leak Detection that will find a leak for about $500 if it comes down to it. You'll feel better spending that money when you can still take it out of the builder's check rather than after the fact.

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    Re: Pool Leak - Losing 3" a week

    Thanks for such a quick reply. I heard of the bucket test, but didn't think it was necessary before because the builder was acting as if the water loss was NOT normal - so it wasn't a question of whether there is a problem but, rather, finding out where the problem was.

    The last payment was only 5% of the total cost, but the only leverage I have.

    I'll try the bucket test and then follow-up with the American Leak Detection reference. Thanks!
    18'6" x 36'6" Grecian In-ground
    27,000 gal. (give or take)
    Sand Filter
    Polaris
    Solar Cover

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    Henry Porter's Avatar
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    Nov 2008
    Location
    Sweden
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    604

    Re: Pool Leak - Losing 3" a week

    Hi!
    Can't you use the exlusion method.
    I'm just speeking from the top of my head. I do not have any experience in this field.
    First I would lower the water level below the skimmer and turn of the pump to see what happens. If the water still sinking I would lower it below the inflows next time. and continue so until it stops, hopefully you could circle in the leak that way.

    75mm/week is that unnatural waste of water? I thought that was in the range on what could considers to be normal(even if it's sounds to be on the upper half) if you use the pool on a regular basis and the weather is hot. Assumptive the pool is normal size.
    Kids in the pool with all jumping and splashing most waste a bit aswell I guess.
    Inground concrete pool 14600 gallons,Pentair Whisperflo 3/4HP WFE-3, Hayward swimclear 420sq ft
    Zodiac LM3-24 SWG, Dolphin Diagnostic poolrobot, Heatpump Gullberg&Jansson 13,8KW, TF testkit.

    Seen a shooting star tonight And I thought of you You were trying to break into another world A world I never knew
    I always kind of wondered If you ever made it through Seen a shooting star tonight And I thought of you

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    Re: Pool Leak - Losing 3" a week

    more good suggestions. thank you. I guess I'm having to move from a mode where I've been relying on their expertise in trouble shooting the issue to becoming more assertive in investigating this on my own - starting with the fundamental question of whether there is a problem or not. What has me confused is that they have been operating under the premise that it was a problem. But they ran out of things to try so they just changed the premise.
    18'6" x 36'6" Grecian In-ground
    27,000 gal. (give or take)
    Sand Filter
    Polaris
    Solar Cover

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    Join Date
    Mar 2007
    Location
    Coastalish 'down easter'
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    Re: Pool Leak - Losing 3" a week

    HI and welcome to TFP!!

    In the Pool School section is an article on leak detection here. See if anything there can help you. If you still need help on the bucket test or whatever - please respond back and we'll all work together to get you the answer you need

    Congrats on the pool , sorry it's loosing water - we can and will help!!
    Luv& Luk
    -Ted

    Having done construction and service for 4 pool companies in 4 states starting in 1988, what I know about pools could fill a couple of books - what I don't know could fill a couple of libraries :-D

    POOL SCHOOL, TF Testkits, Jason's Pool Calculator, CYA vs. cl chart, (Just a few DARNED handy links!)

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