Permits Needed for Domestic Wastewater Treatment Facility Businesses

If your business plans to perform backflow prevention assembly inspections, the inspection must be performed by an individual that has obtained a Backflow Prevention Assembly Tester Certification from the department. Certification must first be obtained at a school in the state through either the American Society of Sanitary Engineers or the American Backflow Prevention Association.

If you would like to become a licensed drinking water treatment operator or a drinking water distribution operator, visit the department's Operator Certification webpage. The department can help provide you with training, examinations, funding vouchers to obtain certification and information about employment opportunities within Missouri. 

If your business is a no-discharge, private or domestic wastewater treatment facility with design flows of less than 50,000 gallons per day and land apply the wastewater, design flows of less than 50,000 gallons per day and plan to land apply the wastewater, you must obtain a Land Application of Domestic Wastewater MOG823000 master general permit.

If you or your business is capable of producing 100,000 gallons per day, or approximately 70 gallons per minute, including all wells or surface intakes, you are required to register with the department as a Major Water User. This registration is not for permitting purposes or to regulate water usage. Major water users are required by law to report the volume of water they used by March 31 of the year following the usage. Registration is required in order to submit reports.

The Major Water Users Program is established to simply gather water use data. Missouri collects water use data to better understand and manage the state’s water inventory. For more information, or to complete the online registration, please visit the Major Water Users webpage.

If your business plans to operate a publicly owned treatment works facility that receives primarily domestic sewage from residential and commercial customers, you will need to apply for a Municipal Wastewater Operating Permit. Larger types of these facilities may also receive and treat wastewater from industrial facilities connected to the system.

If your business plans to operate a public water system that supplies drinking water to the public, you must obtain a Public Drinking Water Permit to Dispense. A public water system has at least 15 service connections or serves at least 25 people at least 60 days out of the year. If your business plans to connect to a permitted public water system, then you are not required to obtain this permit.

If your business plans to construct a gravity sewer extension, force main and lift station, you may need a site-specific Sewer Extension Construction Permit. You may also need this permit if you plan to construct a non-earthen flow equalization storage basin at a lift station and an inline storage.

If you or your business has received a Wastewater Construction Permit for domestic wastewater discharges and have completed the construction project, you will need to apply for a Site-Specific Domestic Wastewater Operating Permit before you may operate, use or maintain the existing point source of water pollution. 

If your business plans to build, erect, alter or replace an existing or proposed point source, water contaminate source or wastewater treatment facility, you may need a Wastewater Construction Permit.

If you would like to become a licensed wastewater treatment operator including a Concentrated Animal Feeding Operation Waste Management System operator, visit the department's Operator Certification webpage. The department can help provide you with training, examinations, funding vouchers to obtain certification and information about employment opportunities within Missouri.