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The December 2000 issue of Water Conditioning and Purification reports a study done by Clinical Research Associates (http://www.cranews.com) - a non-profit organization which evaluates equipment and supplies utilized in dental offices.
CRA did a study on the water taken from an average office bottled water cooler. It found 100,000 colony forming units per millimeter (cfu/ml).
The Water Conditioning and Purification magazine commented: "that's 24 million organisms in 8 ounces of water. The source of the problem isn't the bottled water, but the cooler reservoir where most of the bacterial growth occurs."
OSHA standard 29 CFR 1910.141(b)(1) mandates that all public places of work offer potable water. 42 CFR Part 72 defines "potable" among other criteria with bacterial levels below 500 cfu/ml
We strongly recommend that you have your water tested for a "Plate Count Test" (this is the only test that tests for all bacteria) to know where you stand. This is a simple test that anyone can have done by mail and which costs about $35 plus S&H. One such lab is Fountain Valley Analytical Laboratories which can be found at http://www.fval.com. (O2WaterClean has no financial interest on these tests).
Few bottled water delivering services do a thorough job disinfecting the whole cooler. It is hard to expect delivery personnel to perform a job pertaining to the skills of heath service workers and it is hard to expect bottled water companies to guaranty sanitary conditions for bottles which they service possibly only once a month or even less often.
Also, the problem is not principally with cleaning the main reservoir of the cooler but because of the biofilm that forms in the small water lines of the cooler which is very hard to remove. See the reference on this issue at this site's "More info" section here.
O2WaterClean technology can resolve the problem by providing medical grade water with equipment that is perpetually self-cleaning. It can do it for less than 30 cents per gallon of operation costs plus competitive equipment cost.
