These tests may be conducted by the operator of the system to judge variations in water quality, to identify objectionable water characteristics, and to detect the presence of foreign substances which may adversely affect the potability of the water. These control tests shall be performed in accordance with procedures approved by the commission. Operators of water treatment plants at all public water systems utilizing coagulation, settling, softening, or filtration shall perform daily chemical control tests on the filtered water for turbidity, pH, alkalinity and chlorine residuals; list results on the Monthly Report of Water Works Operation and copy to the commission after each month of operation.

Source Note:The provisions of this §290.104 adopted to be effective April 15, 1994, 19 TexReg 2282.