All tests of mechanical devices shall be conducted by a certified backflow technician. Such technician shall be responsible for the following:
A. Ensure that acceptable testing equipment and procedures are used for the testing, repairing or overhauling of backflow prevention assemblies.
B. Make reports of such testing and/or repair to the consumer, the city and the bureau of drinking water and sanitation. Reports shall be in accordance with the bureau's requirements.
C. Include in all reports a list of any materials or replacement parts used.
D. Ensure that replacement parts are equal in quality to original parts and that any testing, repair or replacement does not change the design or operational characteristics of the assembly.
E. Maintain license in current condition and testing equipment in proper operating condition.
F. Be competent to use all necessary equipment to properly test and maintain backflow prevention assemblies.
G. Tag each double-check valve, pressure-vacuum breakers; reduce pressure backflow assembly and high hazard air gap; show the serial number, date tested and by whom, including the technician's license number. (1985 Code § 18-1-17)