Water Softeners and Drinking Water Systemsthat have the Water Quality Association's Gold Seal of Approval.Grosch Quality Water, Inc. is proud to be the authorized Hague Quality Water dealer in Greenville and its surrounding areas. Since 1960, Hague Quality Water has been manufacturing the most reliable and efficient water treatment systems in the USA. We are water treatment specialists, experienced, knowledgeable and eager to offer expert installation and service.