Long Island's water cycle

An aquifer is an area underground where rainwater is held, usually between the spaces of sand and gravel. Long Island has 3 major aquifers.

Glacial Aquifer

The top of this aquifer is our water table. You are looking at it when you see ponds or streams.

Magothy Aquifer

This aquifer is where most of us get our drinking water. It's the biggest aquifer we have under Long Island.

Lloyd Aquifer

This is our deepest aquifer and it contains the oldest and cleanest water. It takes a long, long time for water to get down there and that water trickles down only from a few places near the middle of Long Island.

What happens if we use too much water? Click here

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