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T/F: In Texas, about 75% of all water is used for commercial, industrial, or agricultural purposes. - ANSWERSTrue Water covers approximately ________ of Earth's surface. - ANSWERS71% Drought is an extended period when a region receives a deficiency in its ________ water supply. - ANSWERSatmospheric, ground, or surface T/F: Only about 1 gallon of tap water per person/day is used for drinking and cooking - ANSWERSTrue Excluding outside water use, the average household uses about ___...

The primary purpose of the Water Utility Industry - ANSWERSThe production and delivery of safe drinking water to consumers Those who work in the public water industry have a responsibility to meet standards created by these types of government entities. - ANSWERSFederal and State basic federal and state standards state that Water must be: - ANSWERSdisinfected, delivered at adequate pressure, and be ample in quantity. Employees should guard what - ANSWERSthe water supply and facilities ...

A trench 24in wide 800ft long and 4ft deep is to be excavated. The amount of soil excavated is? - ANSWERS6400ft An elevated storage tank had pipe 150 feet above ground when full water pressure at the bottom psi should be? - ANSWERS65 Chlorine dosage for water is 2.7mg/l if chlorine residual after 30 minutes is 0.8mg/l. What is demand expressed in mg/l? - ANSWERS1.9 Water is pumped 250 gallons a min. How long to fill 100,000 gallon tank? - ANSWERS6.6 A free chlorine residual of 0.6mg/...

According to the Safe Drinking Water Act the basic definition of a public water supply system is any water system that supplies water for human consumption that serves: - ANSWERS15 service connection or over 25 persons for over 60 days a year What federal law regulates public water supplies? - ANSWERSSafe Drinking Water Act What cause water to move through pores in soil and rocks ? - ANSWERSGravity What are disease producing bacteria called? - ANSWERSPathogenic A presence/absence col...

What is the name of the State Agency responsible for enforcing the Safe Drinking Water Program in Texas? - ANSWERSTexas Commission on Environmental Quality (formally known as TNRCC) What minerals are associated with water hardness? - ANSWERScalcium and magnesium A public water system MUST at all times provide - - ANSWERSAdequate quantity of water Adequate water pressure Adequate Disinfection All of the Above A source of Groundwater would be - - ANSWERSAquifer Fecal cooliform organ...

Well casing - ANSWERSprovides connection to groundwater and pathway for bringing water to the surface. Prevents aquifer contamination. hydrogen sulfide - ANSWERSdissolved gas that causes taste and odor Sodium Hypochlorite (HTH) - ANSWERSLiquid bleach that has shelf life of 60 to 90 days Hypochlorinator - ANSWERSdiaphragm pump (similar to one used to feed fluoride) that dispenses chlorine solution made from hypochlorites into water being treated Gas chlorine - ANSWERSgreenish-yellow, ...

Rule of capture - ANSWERSPermits owner of a well to pump as much water as desired, even if water is drained from beneath the land of others when treating surface water, the process of coagulation will be affected by - ANSWERSall of the above a public water system is responsible for providing - ANSWERSall of the above a common type of oxidant that is used at most surface water treatment plants to kill bacteria and to prevent trihalomethane formation is - ANSWERScombined chlorine Which...

For a water storage tank, cathodic protection is only effective for the: - ANSWERStank areas covered by water For a water storage system, the purpose of an altitude valve is to prevent: - ANSWERSoverflows Before using a water storage tank that has been disinfected, water from the tank must not show the presense of: - ANSWERScoliforms High trihalomethane (THMs) levels may cause: - ANSWERScancer A finished water with a negative Langelier Index may be: - ANSWERScorrosive Water with p...

Operators have a responsibility to provide drinking water that meets ______ and ______ standards. - ANSWERSfederal, state Water must be ______, delivered at adequate ______, and be ample in ______. - ANSWERSdisinfected, pressure, quantity Utility employees should guard the water supply and facilities from _____, _____, and even ______. - ANSWERScontamination, vandalism, terrorism. The state requires bacteriological sample results to be kept ______ years. - ANSWERS5 The state requires...

What is the name of the State Agency responsible for enforcing the Safe Drinking Water Act? - ANSWERSTexas Commission on Environmental Quality what Minerals are associated with water hardness? - ANSWERSCalcium 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 - ANSWERSD. All of the above A Source of groundwater would be? - ANSWERSAquifer Fecal Coliform organisms s...