A-1 Eco/Lindsay Water Treatment Water Sales, Treatment & Service A-1 Eco/Lindsay Water Treatment Visit Website 2016 Plainfield Rd. Crest Hill, IL 60403 (815) 725-2122 (815) 725-1367 (fax) About About We sell, service & rent water treatment equipment to remove hardness, iron, radium, arsenic, lead, nitrates, sulfur, bacteria & more. EcoWater is the world's largest residential water treatment manufacturer.