SANTA ANA, Calif. (AP) — Thirty-seven water districts or cities around California have passed rules restricting the use of water in swimming pools in the past few months due to a devastating drought. The new regulations range from mandating the use of pool covers to reduce evaporation to outright bans on filling or refilling new or newly drained pools to requiring that pool owners fill up with water from an external source that won’t reduce the supply of drinking water.