Islands: The Water Supply

Purchasing your own private island might mean owning a piece of paradise, but it also brings with it a whole set of new responsibilities that must be kept in mind. Aspects of home ownership that many of us take for granted on land can pose serious problems on an island.

One thing to keep in mind is that if you plan to develop your island, you will need to ensure that there is a suitable supply of fresh water. If you plan to reside on your island part-time, you’ll need about 30,000 to 100,000 gallons annually. For full-time living, you will need the equivalent of 40 inches of annual rainfall. The smaller and/or rockier the island is, the less likely it is to have a steady supply of water. Luckily, there are options. If the ground water table is high enough, you may be able to dig a well. If you are close enough to the mainland or another island with a water source, you may be able to access it via PVC piping. Desalination plants can also be purchased for as little as $20,000.

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