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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...

A watercourse that flows continuously at all times of the year is called? - ANSWERSPerennial stream. During the night, algae causes the pH of the water to? - ANSWERSDecrease which of the following contributes to the creation of algae blooms? - ANSWERSIncreased nutrients Which of the following is found mainly in groundwater sources and forms a precipitate when oxidized? - ANSWERSIron The Riparian Doctrine is something called the? - ANSWERSRule of Reasonable Sharing Which of the fol...

Water Resources in Texas includes lakes, rivers, bays, estuaries, wetlands, ground water, and storm (1-3) - ANSWERSFalse Water Polluntants include organic and inorganic material, heat, and radiation (1-4) - ANSWERSTrue In Texas, Clean water is needed to provide for human comsumption and recreation, Maintain aquatic habitats for wildlife, recharge ground water, and provide for industry. (1-4) - ANSWERSFalse Two sources of water contamination are discharges and non- point source discharge...

Mortar Lining - ANSWERSType of physical barriers that can be placed in ductile iron pipes to reduce corrosion control Orthophosphates - ANSWERSused as a corrosion inhibitor atmospheric vacuum breaker - ANSWERStype of backflow preventer is typically found on laboratory sinks chloramines - ANSWERSconsidered a combined chlorine yellow - ANSWERScolor is gas chlorine 20.41 Gallons - ANSWERSa water system treats 4.1 mgd and wishes to maintain a chlorine residual of 0.7 ppm how many gall...