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Thread: Overflow drain question

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    Overflow drain question

    I'm a pool newbie with a very old (21yr) pool. I noticed that my pool automatically reduces the water level so I asked the pool store about it. She said some of the older construction have built in overflow and told me to look in skimmer for hole or pipe. I found nothing there but do see a 2-3 inch linear opening that is very thin in the tile under lip of pool. Could this be where my pool is draining? If so the water is just going into the ground, couldn't that cause setteling of the earth under the pool and subsequently damage the pool?

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    duraleigh's Avatar
    Join Date
    Apr 2007
    Sebring, Florida

    Re: Overflow drain question

    Can you post a pic? It sounds like a gap between the pool wall and the decking.....not a drain.
    Dave S. - Forum owner
    42k vinyl and concrete pool, 1.5hp pump, 140gpm filter
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    JasonLion's Avatar
    Join Date
    May 2007
    Silver Spring, MD

    Re: Overflow drain question

    Overflow drains are fairly common, though not even close to universal. They can be installed in various places, most commonly inside a simmer, but they can also appear as a pipe opening anywhere inside of the pool.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
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    Re: Overflow drain question

    Thank you JasonLion and duraleigh for the info. I will check for some other pipe. I am not sure I can post a pic but will try. I think this is a fantastic site and am so happy to have some advice. I'll get back later today!

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    AlanE's Avatar
    Join Date
    Jun 2013
    Cape Haze Peninsula, Florida

    Re: Overflow drain question

    Here is one example of an overfill pipe. Circled in red.

    It will be outside the caged area and according the PB it will be cut off at water level.
    23.6x14 IG free form ~8K gallon, Pentair VS 3050 Intelliflo, GloBrite LED lighting w/IntelliBrite controller, Aztec Cobalt water tile. CLI Carolina Blue pebble finish, Bronze pool cage, 336 sqft Heliocol solar heating. Build Thread and landscaping Solar heating install

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    Re: Overflow drain question

    Thank you AlanE! I see it in the picture. Since I posted last I've discovered that the slit in the border tile is the overflow drain. I spoke to the owner of my pool store and she was very familiar with my type of drain. I still have not found an image anywhere on the net like it but will try to post one of mine here so anyone else might have it can see. Thanks again, I really appreciate any help with this pool!

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