The Old Collier Golf Club in Naples, Fla., uses brackish water to nourish special plants and minimizes sprinkling times, which cuts down on the club's water and electricity use. "We're able to irrigate the entire golf course in six-and-a-half hours, which means we can wait later to irrigate and give it a chance to rain," Tim Hiers said, which allows the club to pay just $14,000 per year in electricity.

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