GEOLOGY

Detailed explanation-1: -Answer and Explanation: Groundwater pollution is hard to clean up because this water is not easily accessible since it is located underneath the Earth’s surface.

Detailed explanation-2: -Also, chemicals in the groundwater last longer; chemicals cannot evaporate, and they resist breakdown in the absence of air and light. It is difficult and sometimes impossible to purify contaminated groundwater.

Detailed explanation-3: -Groundwater contamination can last for years and be difficult and expensive to clean up.

Detailed explanation-4: -Ground water remediation techniques span biological, chemical, and physical treatment technologies. Most ground water treatment techniques utilize a combination of technologies. Some of the biological treatment techniques include bioaugmentation, bioventing, biosparging, bioslurping, and phytoremediation.

Detailed explanation-5: -Contamination of ground water can result in poor drinking water quality, loss of water supply, degraded surface water systems, high cleanup costs, high costs for alternative water supplies, and/or potential health problems. The consequences of contaminated ground water or degraded surface water are often serious.