Texas Class D Water Distribution study guide Updated Questions and Answers (2024 / 2025) (Verified Answers)

Texas Class D Water Distribution study guide Updated Questions and Answers (2024 / 2025) (Verified Answers).1. What is the name of the State Agency responsible for enforcing the Safe Drinking Water Act? ANS Texas Commission on Environmental Quality 2. what Minerals are associated with water hardness? ANS Calcium and magnesium 3. 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 ANS D. All of the above 4. A Source of groundwater would be? ANS Aquifer 5. Fecal Coliform organisms sometimes found in water supplies are an indi- cation 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 ANS E. All of the above 6. A disease that may be spread by inadequately disinfected water is ANS Dysen- tery A Common Chemical used in the disinfection of a small water Supply is ANS Calcium hypochlorite