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2
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If you don't get your drinking water from a river or reservoir, you probably get it from here
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3
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The total area underground that is filled with water. Above it is the zone of aeration
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4
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A body of water underneath of an impermeable layer such as bedrock or clay
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5
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Certification that a product meets a certain level of water efficiency. This is to water what EnergyStar is to electricity
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6
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Rain water that flows over the surface, often into a stormdrain, to a local stream and ultimately to the ocean
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7
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The highest point of the groundwater, closest to the surface
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9
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A body of underground water close to the surface
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10
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An impermeable layer underground that water cannot easily pass through
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11
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When rain water seeps underground into an aquifer
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