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— Choose a Frequently Asked Question (FAQ) —
 
1.-

Are graves in a cemetery considered a potential threat to groundwater contamination?
2.-

Are there any areas in the United States where aquifers are being depleted?

3.-

Are there any common indicators as to why a well in constant use suffers a substantial loss in pumping capacity?
4.-

Are there any major cities in the U.S. that rely on groundwater to meet their freshwater needs?
5.-

Are there general differences in the natural quality of groundwater and surface water?
6.-

Are there Internet sites where I can find general information about ground water wells?
7.-

Are there potentially untapped water supply benefits from gas and oil well exploration (produced water) in some areas of the United States?
8.-

Are there regulatory impediments or other problems associated with making beneficial use of the water pumped to the surface (produced water) from oil and gas exploration?
9.-

Are there rivers underground?
10.-

Are there special video cameras that can be used to inspect the interior of a well and is such an inspection worthwhile?
11.-

Are there specific bacterial groups known to be capable of reducing arsenic from As(V) to As(III), the more soluble form, making it more likely to contaminate ground water?
12.-

Can a geothermal heating and cooling system contaminate ground water?
13.-

Can altering surface drainage and flow around or into sinkholes affect groundwater supplies in karst terrain?
14.-

Can an aquifer dry up completely?

15.-

Can arsenic that has been applied to the landscape in pesticides or as a residual component of poultry manures, or arsenic that has been buried in unlined landfills, migrate through soil and geologic formations to contaminate ground water wells?
16.-

Can deep well water be contaminated with organic iron?
17.-

Can excessive pumping of underground water cause a sinkhole to form?
18.-

Can groundwater be used as a source of energy?
19.-

Can groundwater contamination impact wetlands and wildlife?
20.-

Can oil wells be a threat to ground water supplies?
21.-

Can old cemeteries be a source of arsenic contamination of ground water?
22.-

Can pumping of ground water cause land subsidence?
23.-

Can we rely on soil’s natural filtration and the confining layers above our deep aquifers to prevent them from being contaminated?
24.-

Compared with surface water, is groundwater safe for human consumption?

25.-

Do wells provide a route to groundwater contamination?
26.-

Does an underground water source have to be a certain size to be called an aquifer?
27.-

Does well depth have any impact on potential iron problems in ground water?
28.-

How are aquifer drawdown and stream depletion response functions determined?
29.-

How are aquifers replenished?
30.-

How can over-pumping cause salt water intrusion in coastal aquifers?
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This website was developed by the ACES Water Quality Team, under the leadership of Dr. James E. Hairston. It is funded, in part, by USDA-CSREES water quality grant support under Section 406 of the Agricultural Research, Extension and Education Reform Act of 1998.