Texas Class D Water Distribution study guide 70 Questions and Answers 100% Verified

What is the name of the State Agency responsible for enforcing the Safe Drinking Water Act? - Correct Answer Texas Commission on Environmental Quality what Minerals are associated with water hardness? - Correct Answer Calcium and magnesium A public water system MUST at all times provide? A. Adequate quantity of water B. Adequate water pressure c. Adequate disinfection D. All of the above - Correct Answer D. All of the above A Source of groundwater would be? - Correct Answer Aquifer Fecal Coliform organisms sometimes found in water supplies are an indication that? A. The water Supply is Contaminated B. Harmful Bacteria may be present C. Possible pathogenic organisms are in the water D. The water is unsuitable for drinking E. All of the above - Correct Answer E. All of the above A disease that may be spread by inadequately disinfected water is - Correct Answer Dysentery A Common Chemical used in the disinfection of a small water Supply is - Correct Answer Calcium hypochlorite A public water Supply system should maintain a system residual pressure of 20 psi and a minimum normal operating pressure of _____ - Correct Answer 35 psi The amount of chlorine in mg/L that is used by reacting with iron, organics or bacteria is called - Correct Answer Demand The MOST important treatment in water is - Correct Answer Disinfection Which of the following would be considered part(s) of a hypo-chlorinator system - Correct Answer Solution feed pump According to state requirements all public water supply wells shall be provided with a raised concrete sealing block screen vents and - Correct Answer Flow Measuring Device