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Welcome to the Official Website of Windermere Oaks Water Supply Corporation in Spicewood Texas Our Mission At Windermere Oaks Water Supply Corporation we are committed to providing safe high quality water services to our community while maintaining a standard of excellence in customer service and environmental conservation. Bill Payment Options Looking for the most convenient way to pay your bill. Bills can be paid by mail placed in the community drop box or online with PayStar. Simply choose the option that best suits your needs.