| # | Iron and manganese in a groundwater supply may __________ the cholrine demand? | increase. | decrease. | | | | 1
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| 1 | What type of treatment should be given when a well produces red water? | fluoride removal. | taste and oder control. | sedimentation. | pH adjustment, aeration, filtration. | | 4 |
| 2 | Hydrogen sulfide in well water will cause the water to have an odor similar to? | ammonia. | chlorine gas. | rotten eggs. | fish eggs. | rotten wood. | 3 |
| 3 | A sanitary well seal is used to? | seal the top of a well casing. | seal the clear well. | seal the elevated tank. | seal a break in the distribution system. | | 1 |
| 4 | The distance between the static water level and the pumping water level of a well is referred to as the? | cone of influence. | zone of influence. | drawdown. | freeboard. | | 3 |
| 5 | Groundwater may best be described as? | water taken from rivers,etc. that flow along the ground. | water taken from lakes, etc. on the ground. | water taken from wells or springs. | the quantity of water present in soil. | none of the above. | 3 |
| 6 | An artesian system means that the water? | under pressure due to aquifer enclosed in impervious strata. | flows out of ground at some point below the water table. | is pure and free from chemical contaminants. | will have no loss of pressure due to friction. | must flow above the surface of the land. | 2 |
| 7 | An aquifer is? | a flowing well. | a water-bearing stratum of rock, sand or gravel. | an impervious stratum below bedrock. | the course of a flowing stream. | structure for conveying a canal over a river. | 2 |
| 8 | A decrease in the gallons pumped from a well per kilowatt hour of electricity used indicates? | a decrease in pump efficiency. | an increase in electric rates. | an increase in pump efficiency. | a decrease in well efficiency. | a and d. | 5 |
| 9 | Some wells produce excessive amounts of sand in the water. There are some operating procedures that are helpful in overcoming this problem. One is to reduce the gallons per minute of pumping and the other is? | to pump the well for short periods. | to increase the pumping head on the pump. | to pump the well continuously for long periods. | to pump the well only every other day. | to reduce the horsepower supplied to the pump. | 3
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