All parts and surfaces of water vending machines must be maintained in a clean and sanitary condition by the operator. The vending chamber and vending nozzle must be cleaned and sanitized each time the machine is serviced. Surfaces in contact with the vended water must be maintained as a deposit-free, visibly clean system. A record of cleaning and maintenance operations must be kept by the operator at company headquarters for each water vending machine and be available for inspection upon request.
Vended water must be from a community public water system or other approved source. The operator is responsible for monitoring the source and vended water from each vending machine. The sampling and analysis must be performed once every three months for total coliforms and the source water once each year for chemical, physical, and radiological contaminants in part 1550.3210. Purified water must be analyzed once every three months for total coliforms and total solids. The required sampling must be performed by qualified personnel and analyzed by a competent laboratory using approved methods of analysis in part 1550.3210. Records of sampling and analysis must be maintained on file at company headquarters for at least two years and must be available for official review upon request by the commissioner or any of the commissioner's authorized agents.
Vended water from each water vending machine using silver-impregnated carbon filters in the treatment process must be analyzed once every six months for silver. The analysis must be performed by a competent laboratory using approved methods of analysis in part 1550.3210. Records of sampling and analysis must be maintained on file for at least two years and must be available at company headquarters for official review by the commissioner or any of the commissioner's authorized agents.
A more frequent analysis of the parameters in this part may be required by the department if there is evidence of unfitness of the vended water because of the presence of undesirable elements, compounds, materials, or microorganisms caused by the passage of water through the machines.
Plant operators using a community public water system for source water may substitute municipal testing results for chemical and radiological contaminant requirements of this part.
Plant operators using a noncommunity public water system for source water may request a variance from the commissioner to reduce the frequency of testing if they provide documentation that the source water consistently meets the chemical and radiological contaminant requirements of this part. The variance may not be longer than three years between testing.
MS s 31.11
18 SR 31
September 23, 2013