In Missouri, a permit is required for anyone working on water wells, monitoring wells, pumps, heat pumps or drilling test holes. If you are planning to contract or subcontract work to drill, construct, repair, reconstruct or plug water wells or install water well pumps, you may need to apply for a Restricted Well and Pump Installation Contractor Permit. For more information, visit the department's Well and Pump Installation Contractor Permitting webpage.
