General specifications for disinfecting wells, water service pipe lines, pneumatic storage tanks and other water conveying or storage devices shall be as follows.
(a) Before placing a new system in service, all of the interior surfaces of pipelines and tanks, including the well, shall be disinfected according to the following procedure. The entire system shall be filled with water to which has been added enough of the bactericidal solution to produce fifty ppm of chlorine or equivalent. The solution shall be allowed to stand at least twenty-four hours and shall be flushed with potable water.
(b) After operating the pump for six to twelve hours and after removal of disinfection residual, a sample shall be collected for bacterial examination and, prior to placing the system into service, shall be found negative for coliform bacteria.
(c) Disinfection shall be performed by the person who installs the pumping equipment and should additionally be performed by a licensed plumber upon completion of the plumbing fixture installation when the water system and plumbing system installations are not concurrent.
(d) If testing for safe water after drilling the well identifies the presence of a primary (harmful) contaminant, a test for that contaminant shall be conducted to confirm the adequacy of treatment and a treatment method shall be found so as to reduce the occurrence of the contaminant to a level below the maximum acceptable level prior to placing the system into service.
(Ord. 88-14. Passed 9-19-88.)