Drinking-water quality and issues associated with water vending machines in the city of Los Angeles.
* In California, vending machine water is required to meet all maximum contaminant level requirements set for public drinking water.
* Water vending machines must be constructed of corrosive-resistant, nonabsorbent material that allows easy cleaning and maintenance.
* The dispensing spout must be protected from contamination by a self-closing, tight-fitting door or enclosure.
* The water must be disinfected by a health department-approved method.
* The name, address, and phone number of the machine operator must be displayed on each machine.
* Each water vending machine must have an annual permit issued by the California Department of Health Services.
* This study sampled water from 40 vending machines in Los Angeles, California.
* For 17.5 percent of the machines, there was either no posted operator information or the operator could not be contacted.
* Over 27 percent did not have the last date of service posted on the machine.
* Over 27 percent did not have a door, or had a door that was not self-closing.
* Over 12 percent had been vandalized.
* A CDHS permit was lacking on 35 percent of machines.
* Chlorine was detected in 10 percent of the water samples.
* Evidence of mold was found in 60 percent.
* Over 30 percent tested positive for coliform bacteria.
* Of these, 25 percent contained fecal coliform bacteria.
* This study also demonstrated that water vending machines can supply water relatively free of microbial contaminants.
* The key difference seems to be the quality of maintenance.
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|Title Annotation:||Practical Stuff!|
|Publication:||Journal of Environmental Health|
|Article Type:||Brief Article|
|Date:||Jan 1, 2004|
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