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Thread: Chlorine or Chloramine in fill water

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    Chlorine or Chloramine in fill water

    I am just wondering... do we in the swimming pool world worry about chloramines in tap water?

    In the aquarium world, it was very important to know the difference between tap water with chlorine and tap water with chloramine. Of course, we would always dechlorinate the tap water but if the system used chloramines then breaking the bond between the chlorine and the ammonia and destroying the chlorine would leave you with some amount of ammonia and quite often dead fish in the tank. The rule of thimb we used was that if you let the water sit for day with agitation the chlorine would likely be gone. With chloramine, that would take a month.

    From time to time I read about ammonia in the swimming pool and how much of an issue that can be as far as chlorine consumption to rid the pool of it. So, should people be concerned about whether their tap water contains ammonia at the time they fill the pool?
    23,000 gallon in ground pool with rock waterfall and spillover spa, Aqualink control system, Polaris 380 cleaner, Purex Triton Clean&Clear Plus cartridge filter. Located in The Woodlands, Texas.

    Pool owner since Nov 2008, Trouble Free since April 2009. Happy to help when I can.

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    JasonLion's Avatar
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    May 2007
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    Re: Chlorine or Chloramine in fill water

    No, it doesn't make a big difference in a swimming pool. If you have Chloramine in your fill water you do end up using a bit more chlorine than you would otherwise, but not enough to worry about it.
    19K gal, vinyl, 1/2 HP WhisperFlo pump, 200 sqft cartridge filter, AutoPilot Digital SWG, Dolphin Dynamic cleaning robot
    Creator of PoolMath and Pool Calculator. Other handy links: Support this site, TF Test Kits, Pool School

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