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Thread: Help! Water in ground, cannot find the source

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    Join Date
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    Help! Water in ground, cannot find the source

    Hello,

    I have a new pool built just several weeks ago, and while we're digging around the pool to install some sprinklers we found a puddle of water around the pipelines next to the pool, close to the equipment pad. The pool builder ordered a leak detection service (American leak detection), but they said there's no leak in my pool.

    There's still water coming out in the same area, and we tried to pump out the water but we keep getting the water about the same level. The water level in the ground remains slightly lower than the pool water level, and it does not get higher whether I run the pool pump or not. I think the fact that it does not get higher tells that it's not leaking in the middle of pool plumbing, but there'd be a small leak around the pool, but really cannot identify which one is the source.

    As a last resort, I'd try draining the pool, to see whether the leak stops at a specific point.

    Would there be anything else that I could try to identify the leak, or at least to prove or disprove that the water is coming from the pool? I'm losing about 1/3 ~ 1/2 inch water daily from the pool so I really cannot tell from that. We have clay type soil (Houston area) so water does not travel much beyond the puddle I found.

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    Mod Squad pooldv's Avatar
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    Re: Help! Water in ground, cannot find the source

    Welcome to TFP!
    Typical evaporation is 1/8"-1/4" per day so that is certainly enough to suspect a leak. I would try a bucket test next. More here, Pool School - Leak Detection
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    Re: Help! Water in ground, cannot find the source

    Thanks! I also tried the bucket test and the result suggests there're some leak but not a lot. Because the leak detection company failed to find the leak the PB is kind of not assured that there's really a problem, so I'd like to prove that the water really came out from the pool. Leslie's told me that they really cannot compare water in the pool with water coming out to the ground because all chemical properties will be messed up.

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    Mod Squad JohnT's Avatar
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    Re: Help! Water in ground, cannot find the source

    Test the water in the puddle for CYA and compare that to the water in the pool. There will be no CYA in any water other than pool water.
    TFP Moderator
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    MarianParoo's Avatar
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    Re: Help! Water in ground, cannot find the source

    Do you know what kind of equipment the leak detection service used?
    27K IG rectangular; vinyl liner; sand filter; 1hp pump; auto-cover; heater; K-2006C.

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    Re: Help! Water in ground, cannot find the source

    Not sure of the exact layout the way you describe it but are you close to a skimmer? Those things are pvc/plastic - could one of gotten cracked before or during concrete pour and leaking water? Mind had concrete poured all around them, but just a thought.
    11K gal, IG Pebble Sheen (Aqua Blue) with sun ledge and attached spa, Pentair Intelliflow 3050 VS/SVRS (3HP), Pentair Easytouch 8 with Screen Logic, Pentair Racer with 3/4 HP booster pump, 400KBTU Pentair Heater, Pentair 60 sq ft DE filter, Zodiac Nature 2, built completed in August 2015

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