Major Water Users

Missouri collects water use data to better understand and manage the state’s water inventory.  A Major Water User is any person or entity that has the capability of producing a large amount of water (100,000 gallons per day or 70 gallons per minute or more) with all their combined wells or surface intakes. This water can be from either groundwater via a well, or surface water from a stream, river, lake, pond, or spring. 

Major Water Users are required by law to report the volume of water used by March 31 of the year following the usage.