File Document Information Areas of Focus Water » Groundwater Water » Wells and Drilling Water » Major Water Users Document Type Publications Last revised 07/01/2025 Description This is a print-only document. The Water Use Reporting - PUB2221 trifold provides information about registering as a major water user in Missouri, reporting and more. For more information call 573-368-2175 or email mowaters@dnr.mo.gov. Keywords Registered Major Water User