TCEQ Class C Water License Exam: Questions & Answers: Latest Updated A+ Score

State Agency responsible for enforcing the safe drinking water act in Texas (Ans- Texas Commission on environmental Quality What minerals can cause water hardness (Ans- Calcium and magnesium A public water system must at all times provide (Ans- Adequate quantity of water, pressure, and disinfection A source groundwater would be (Ans- aquifer Fecal coliform organisms sometimes found in water supplies are an indication that (Ans- Water supply is contaminated, harmful bacteria may be present, possible pathogenic organisms in the water, water is unsuitable for drinking A disease that may be spread by inadequately disinfected water (Ans- Dysentery A common chemical used in disinfection of small water supply is (Ans- Calcium hypochlorite A physical connection between a potable water supply and house well would be (Ans- A cross connection The amount of chlorine in mg/L that is used up by reacting with iron organics of bacteria is called (Ans- Demand Which of the following is a physical characteristic of chlorine gas (Ans- Greenish-Yellow Color, heavier than air, pungent penetrating odor, corrosive Which of the following would