Empire Water 46 Cain Dr, Plainview, NY11803 Empire Water has more than 60 years of experience providing clean drinking water to homes and businesses. Empire…More specializes in commercial and residential water filtration systems, which can be a very cost-effective way to supply a constant supply of filtered drinking water. The cooler filtration units are available for purchase and rental. Units are delivered within 72 hours, and there is a 48-hour response time for all service calls. The Empire Water Rewards Program gives 2 months' free service for every referral. Corporate discounts are available.