With no explanation, label text_A→text_B with either "not_related" or "related".
text_A: 1.7% of water can be found in a location.
text_B: Groundwater -LRB- or ground water -RRB- is the water present beneath Earth 's surface in soil pore spaces and in the fractures of rock formations .. water. water. Earth. Earth. soil pore spaces. Pore space in soil. rock formations. stratum. soil. soil. A unit of rock or an unconsolidated deposit is called an aquifer when it can yield a usable quantity of water .. water. water. aquifer. aquifer. The depth at which soil pore spaces or fractures and voids in rock become completely saturated with water is called the water table .. water. water. soil pore spaces. Pore space in soil. soil. soil. water table. water table. Groundwater is recharged from , and eventually flows to , the surface naturally ; natural discharge often occurs at springs and seeps , and can form oases or wetlands .. Groundwater is recharged. Groundwater recharge. springs. spring ( hydrosphere ). seeps. Seep ( hydrology ). oases. oasis. Groundwater is also often withdrawn for agricultural , municipal , and industrial use by constructing and operating extraction wells .. agricultural. agriculture. municipal. city. industrial. industry. wells. water well. The study of the distribution and movement of groundwater is hydrogeology , also called groundwater hydrology .. hydrogeology. hydrogeology. hydrology. hydrology. Typically , groundwater is thought of as water flowing through shallow aquifers , but , in the technical sense , it can also contain soil moisture , permafrost -LRB- frozen soil -RRB- , immobile water in very low permeability bedrock , and deep geothermal or oil formation water .. water. water. soil. soil. soil moisture. soil moisture. permafrost. permafrost. bedrock. bedrock. geothermal. geothermal ( geology ). oil formation. petroleum geology. Groundwater is hypothesized to provide lubrication that can possibly influence the movement of faults .. lubrication. lubrication. faults. fault ( geology ). It is likely that much of Earth 's subsurface contains some water , which may be mixed with other fluids in some instances .. water. water. Earth. Earth. Groundwater may not be confined only to Earth .. Earth. Earth. The formation of some of the landforms observed on Mars may have been influenced by groundwater .. landforms. Hydrology of Mars. Mars. Mars. There is also evidence that liquid water may also exist in the subsurface of Jupiter 's moon Europa .. water. water. Jupiter. Jupiter. Europa. Europa ( moon ). Groundwater is often cheaper , more convenient and less vulnerable to pollution than surface water .. water. water. pollution. water pollution. Therefore , it is commonly used for public water supplies .. water. water. For example , groundwater provides the largest source of usable water storage in the United States , and California annually withdraws the largest amount of groundwater of all the states .. water. water. Underground reservoirs contain far more water than the capacity of all surface reservoirs and lakes in the US , including the Great Lakes .. water. water. Great Lakes. Great Lakes. Many municipal water supplies are derived solely from groundwater .. water. water. municipal. city. Polluted groundwater is less visible , but more difficult to clean up , than pollution in rivers and lakes .. pollution. water pollution. Polluted groundwater. Groundwater pollution. Groundwater pollution most often results from improper disposal of wastes on land .. pollution. water pollution. Major sources include industrial and household chemicals and garbage landfills , excessive fertilizers and pesticides used in agriculture , industrial waste lagoons , tailings and process wastewater from mines , industrial fracking , oil field brine pits , leaking underground oil storage tanks and pipelines , sewage sludge and septic systems .. industrial. industry. landfills. sanitary landfill. wastewater. wastewater. sewage sludge. sewage sludge. septic systems. septic tank
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