TCEQ Class D - Basic Water Works 3/8: Water Quality questions with correct answers

The molecular formula for water is ______. CORRECT ANSWER-H2O. Water occurs in three forms; solid ice, liquid water, and water vapor. CORRECT ANSWER-True The ______ cycle is the natural exchange of water between the earth and the atmosphere. CORRECT ANSWER-hydrologic Average water use depends on temperature, rainfall, cost, supply, and economic level. CORRECT ANSWER-True ______ is located below the earth's surface and tapped by wells. CORRECT ANSWER-Groundwater ______ water comes from rivers, lakes and reservoirs. CORRECT ANSWER-Surface Future water supplies will become ______ according to the TCEQ. CORRECT ANSWER-scarce Surface water or groundwater prior to treatment is called ______ water. CORRECT ANSWER-raw ______ water means the water is free of disease-causing organisms, has a chlorine residual, and is safe for human consum