Permits Needed for a Public Water System

If your business is required to obtain a Part 70 Operating Permits but accepts voluntary, practically enforcement limitation to reduce emissions to less than 100 tons per year of any regulated pollutant and is less than 10 tons per year of any single hazardous air pollutant and less than 25 tons per year of any combined hazardous air pollutant, you may require an Air Intermediate Operating Permit to address potential air emissions.

If your business plans to construct a new installation or modify an existing minor installation and the project has the potential to emit more than major emission levels of a regulated air containment or construct a new installation or modify an existing major installation and the project has the potential to emit more than the minor levels per year, you may require an Air Major Construction Permit Sections (7), (8) & (9) to address potential air emissions.

If your business plans to construct a new installation or modify an existing minor installation and the project has the potential to emit less than major source levels per year; or you plan to construct a new installation or modify an existing major installation and the project has the potential to emit less than the minor levels per year, you may require an Air Minor Construction Permit to address potential air emissions.

If your business has the potential to emit greater than 100 tons per year of any regulated pollutant, has the potential to emit greater than 100 tons per year of any single hazardous air pollutant, or greater than 25 tons per year of combined hazardous air pollutants, or is required by a New Source Performance Standard or a Maximum Achievable Control Technology, you may require an Air Part 70 Operating Permit.

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. 

• Drinking Water Distribution Operator Certification Fact Sheet PUB2184
• Drinking Water Treatment Operator Certification Fact Sheet PUB2185

If you or your business plans to transport hazardous waste including waste oil, explosives, gases, flammable and combustible liquids, flammable solids, oxidizers and organic peroxides, poisons, radioactive materials, corrosives or infectious waste, you must obtain a Hazardous/ Infectious Waste Transporter License.

If your business plans to engage in surface mining of industrial minerals such as sand, gravel, limestone, dolomite, clay or other construction aggregates, you may need an Industrial Mineral Mines Permit – In-stream Sand and Gravel Mining to engage in surface mining.

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.

If your business plans to remove topsoil and other soil material to expose the mineral commodity, you may need an Industrial Minerals Mines Permit - Open Pit Mining. Industrial mineral open pit mine sites range in size from one acre sand and gravel pits to 1,000 acre limestone sites.

If your business plans to construct a public water system that will supply drinking water to the public, you must obtain a Public Drinking Water Construction Permit. You must obtain this permit if you also plan to complete the following construction projects to the water system: waterline extensions, waterline replacements, drilling water supply well, construction a storage tank, adding a disinfection system, treatment changes, building a pump station or other improvements or modifications. 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.

Construction of new public water systems and expansions, alterations, or modifications of an existing public water system must conform to the department’s Design Standards. If your public water system would like to request an exception to these standards, you will need to submit a Public Water Systems Design Standards Exception Request. 

If your public water system is faced with a critical situation such as currently out of water, drought, flooding, storm damage or other natural disaster and are in need of making emergency construction repairs, you may need to apply for a Public Water Systems Emergency Exception Request.

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 you want to treat, store or dispose of hazardous remediation waste at a remediation waste management site in Missouri, you may be required to follow a Remedial Action Plan. The plan lists conditions about how to treat, store or dispose of hazardous remediation waste.

If your business plans to operate a facility where solid wastes are transferred from one container to another or are processed, you are required to apply for a Solid Waste Processing Facility Construction Permit. Types of processing facilities include incinerator, compost plant, infectious waste, transfer station and material recovery, with or without composting.

If your business plans to operate a facility where solid wastes are transferred from one container to another or are processed, you are required to apply for a Solid Waste Processing Facility Operating Permit. Types of processing facilities include incinerator, compost plant, infectious waste, transfer station and material recovery, with or without composting.