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8. DISINFECTION OF WELLS <br /> 8.1. Following initial installations or subsequent repairs, all public and individual <br /> domestic water wells and all appurtenances shall be disinfected by a method <br /> approved by the Director. <br /> 8.2. To disinfect new wells, the required amount of disinfectant shall be placed in the <br /> well and the well surged with the pump several times to mix the disinfectant with <br /> the water. The well should remain idle for a minimum of 24 hours and then be <br /> pumped until free of disinfectant. When placing the disinfectant in the well, a <br /> solution of the disinfectant shall be used to wash down the well casing and drop <br /> pipe. <br /> 8.3. To disinfect wells in use, double the amount of disinfectant required and follow the <br /> directions as above. In addition, sufficient water should be run through all pipes <br /> and water outlets until the disinfectant is in all pipes and fixtures. All the <br /> disinfectant to remain over night and then pump free of disinfectant. <br /> 8.4. Disinfectant requirements during well construction are addressed in Section 4.5.2. <br /> 9. SAMPLING OF WELLS <br /> 9.1. PUBLIC WATER SYSTEMS <br /> 9.1.1. The water shall comply with Federal Safe Drinking Water Standards and <br /> Chapter 15, Title 22 of the California Code of Regulations. <br /> 9.1.2. The water from public water supply wells and industrial wells used in food <br /> processing shall be analyzed for chemical content and bacteriological <br /> quality at the frequency required by the regulations specified above by a <br /> laboratory certified by the State of California. <br /> 9.2. INDIVIDUAL DOMESTIC WATER WELLS <br /> 9.2.1. To determine quality of water produced by a new water well, it shall be <br /> sampled by the EHD for bacteriological and chemical analysis after <br /> development, the installation of the well pump, and disinfection. <br /> 9.2.2. The tests shall be performed by a California State Certified Laboratory. <br /> 9.2.2.1. At a minimum, tests to be performed will be those tests <br /> required in State Regulations for State Small Water Systems. <br /> 9.2.2.2. Additional analysis to be performed will be as specified by the <br /> Director. <br /> 9.2.2.3. Copies of these water quality tests and reports shall be filed <br /> with the Director. <br /> 9.3. Section 9.2 will not become effective until the Well Program fee revenues are <br /> adjusted to provide for the cost of the quality-testing program. <br /> EHD 43-03 Page 18 of 27 WELL STANDARDS <br /> 10/9/07 <br />