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In Beverly Hills, Calif., environmental activist Tony Corcoran shoots video of residential lawn sprinklers while looking for water wasters. According to records obtained by Reveal, the city's 90210 ZIP code had 32 customers using 2.8 million gallons or more per year.

Credit: Jae C. Hong/Associated Press

The Wet Prince of Bel Air: Who is California’s biggest water guzzler?