Become a TFP Supporter Pool Math Forum Rules Pool School
Results 1 to 4 of 4

Thread: Will Bromine used with ozone create carcinogens

  1. Back To Top    #1
    benavidescj's Avatar
    Join Date
    Apr 2010
    Location
    Fleming Island, FL
    Posts
    431

    Will Bromine used with ozone create carcinogens

    I just read on another thread where someone said that bromine used with an ozinator would create carcinogens. Instead of highjacking that thread I wanted to start a new one for this subject. This has me very concerned since I use an ozinator in a bromine spa. So is it true that using an ozinator in a bromine spa is dangerous?
    Carlos
    Pool: 28,000 gallons IG; IC 40 SWG; Pentair 120 gpm cartridge filter; Marble finish; Pentair Wisperflow 1.5 hp; Polaris 360
    Spa: 350 gallon; Bromine
    How to shock your pool

  2. Back To Top    #2
    JasonLion's Avatar
    Join Date
    May 2007
    Location
    Silver Spring, MD
    Posts
    37,879

    Re: Will Bromine used with ozone create carcinogens

    Ozone combined with bromine can cause bromates to form in your water. Bromates are a suspected carcinogen in drinking water. Just how dangerous bromates are in a pool/spa situation is a matter of some debate.
    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

  3. Back To Top    #3
    benavidescj's Avatar
    Join Date
    Apr 2010
    Location
    Fleming Island, FL
    Posts
    431

    Re: Will Bromine used with ozone create carcinogens

    I did a little research and found out a couple of things. First, the studies that conclude bromate to be a carcinogen refer to oral ingestion. Here is a link to two reports:

    EPA Bromate Toxicoloty Review

    California Public Health Goals for Chemicals in Drinking Water - Bromate

    Second, it appears that absorption of bromates through the skin is not very good, see the second report which states "Absorption of bromate via the skin is apparently poor". You can read the report to get the details.

    My conclusion is that unless you are drinking bromate at 0.30mg/kg-day over an extended period of time you will not get cancer. Unfortunately there is no reference as to the quantity of bromates in spa/pool water but is apparently related to "bromide concentration, pH, temperature, carbonate alkalinity, ultraviolet light (UVA), disinfectant concentration and time (mg/L-min) and transferred ozone dose, among other factors". In my opinion, since absorption of bromate via the skin is poor and the amount of bromates in spa/pool water should be low (no where near the concentration found in hair neutralizing solution), I have to conclude that bromates are safe to swim in.

    I look forward to comments.
    Carlos
    Pool: 28,000 gallons IG; IC 40 SWG; Pentair 120 gpm cartridge filter; Marble finish; Pentair Wisperflow 1.5 hp; Polaris 360
    Spa: 350 gallon; Bromine
    How to shock your pool

  4. Back To Top    #4

    Join Date
    Mar 2007
    Location
    San Rafael, CA USA
    Posts
    12,082

    Re: Will Bromine used with ozone create carcinogens

    I would agree with your assessment -- that's great sleuthing, by the way. When looking at routes of exposure, one needs to look not only at oral ingestion and skin absorption, but also at inhalation. There isn't data on toxicity or cancer rates via the inhalation route, but it does not appear that either sodium bromate or potassium bromate are volatile. With aeration jets in a spa there is some potential for creation of water droplets (not just water-only steam from evaporation), but the quantity inhaled would be expected to be small, especially compared to the mg/kg limits.
    16,000 gallon outdoor in-ground 16'x32' plaster pool; Pentair Intelliflo VF pump; Pentair IntelliTouch i9+3s control system; Jandy CL-340 square foot cartridge filter
    12 Fafco solar panels; Purex Triton PowerMax 250 natural gas heater (200,000 BTU/hr output); automatic electric pool safety cover; 4-wheel pressure-side "The Pool Cleaner"

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •