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Thread: Wondering about toxic effects of cement dust in pool

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    Wondering about toxic effects of cement dust in pool

    Hi.. We are still under the stress of a new pool installation our pool is currently filled with cement particulates. This isn't a small amount of cement particles, the guy cutting pavers had the wet saw near the edge of the pool such that the dust was spewing into the pool water as he worked. Also, I just found out that the other guy who was mortaring the bullnose coping was rinsing his sponge in the pool water as he worked instead of using a bucket of water. The end result is a pool that is filled with cement and 'dyed' mortar particulates.
    We are wondering if the pool water has become toxic. Once we have a cleaned up the bottom and filtered out the suspended particles, will the pool be safe to swim in?
    Any advice is appreciated.

    Thanks,
    Bob
    12,000 gallon ?? Viking carmel fiberglass, 3/4 hp hayward pump, Hayward swimclear 225 sq ft cartridge filter, Hayward SWG with T-9 cell, aquacomfort HP, polaris 9300

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    Re: Wondering about toxic effects of cement dust in pool

    I don't think that there is any reason to be concerned about toxicity due to concrete or concrete dust. Once the water is clean and chemically balanced, you should be fine.

    You should start by getting a full set of test results as soon as possible. Concrete dust and cement can contribute to scaling if your water has high pH, TA and/or Calcium hardness.

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    Re: Wondering about toxic effects of cement dust in pool

    Thanks James. I bit of reassurance was nice. Other than the ph which was off the scale, other chem levels look good. I'm adding muriatic to bring the ph down and should be able to enjoy one of the last really warm days of summer.

    -Bob
    12,000 gallon ?? Viking carmel fiberglass, 3/4 hp hayward pump, Hayward swimclear 225 sq ft cartridge filter, Hayward SWG with T-9 cell, aquacomfort HP, polaris 9300

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    Richard320's Avatar
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    Re: Wondering about toxic effects of cement dust in pool

    Cement dust is more of a breathing hazard than anything else, so you're safe there. Concrete is, however, extremely alkaline. So keep tabs on the pH. Once it gets vacuumed up, I'd backwash. It could still mess with your chemistry if it's in the filter leaching and/or dissolving.
    16K freeform gunite with spa; Pentair 4000 DE filter; Century Whisperflow 1 HP; Pentair Minimax heater.
    Troublefree does not mean Maintenancefree. It's like brushing your teeth: You can spend a couple minutes a day and pennies a week or go to the dentist once a year and spend several thousand dollars.
    A pool is like a pet - you have to feed it every day, even the days you don't want to play with it!

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    Re: Wondering about toxic effects of cement dust in pool

    Thanks Richard,

    Ph is coming down and I did a thorough cleaning of the filter (cartridge)...boy were they black. Water looks great!
    12,000 gallon ?? Viking carmel fiberglass, 3/4 hp hayward pump, Hayward swimclear 225 sq ft cartridge filter, Hayward SWG with T-9 cell, aquacomfort HP, polaris 9300

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