Municipal Wastewater Operating Permit

Antidegradation

Antidegradation reviews are applicable to all new or expanded regulated discharges, including new pollutants of concern, outfall relocation, or changes in production processes. The antidegradation review process is intended to achieve the highest statutory and regulatory requirements and ensure that the proposed discharges fully protect beneficial uses such as swimming, fishing, aquatic life, and drinking water supply protection. In addition, the applicant must demonstrate that the discharge is necessary and has social and economic importance. Each community is different and the social and economic evaluation requires the consideration of factors and potential impacts unique to the community. Through the antidegradation review process, new or expanded discharges are evaluated for no-discharge options, treatment options that meet the water quality-based effluent limits, and treatment options that provide higher levels of treatment. These alternatives are compared (in terms of practicability, economic efficiency and affordability) in ability to protect water quality.

Public participation through the permitting process is a component of the antidegradation review process. The intergovernmental coordination and review process occurs prior to the issuance of any final determination on the social and economic importance of the proposed discharge. The antidegradation analysis and decision are only considered final when a permitting decision has been made that incorporates the public participation process, and the antidegradation review may be revised based on comments received. Visit the department’s antidegradation website to learn more and find necessary forms.

Operator Certification

The use or operation of this facility shall be in accordance with Operator Certification requirements 10 CSR 20-9. Certified wastewater operators perform the daily operational activities at the facility to ensure they are discharging treated wastewater in an environmental safe manner to Missouri’s rivers, lakes and streams. Visit the department’s website to learn more about the Operator Certification program.

Wastewater Construction Permit

This master general permit does not cover construction activities that may be required as part of the project. If you plan to construct, install or modify any earthen basin, collection system or wastewater treatment facility, you may be required to obtain a Site-Specific Wastewater Construction Permit.

Major Water User

Any surface or groundwater user with a water source and the equipment necessary to withdraw or divert 100,000 gallons (or 70 gallons per minute) or more per day combined from all sources from any stream, river, lake, well, spring or other water source is considered a major water user in Missouri. All major water users are required by law to register water use annually.

Reporting

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