Combined Sewer Overflow Technical Assistance

EPA offers support to combined sewer overflow (CSO) permittees and state National Pollutant Discharge Elimination System (NPDES) permitting authorities that may lack the necessary resources or have questions on complying with the CSO Control Policy and Clean Water Act.

EPA can provide a range of assistance including the following:

• Using EPA’s CSO community spreadsheet-based tools
  • CSO Model
  • Long-Term Control Plan Review (LTCP) Checklist
  • Post-Construction Compliance Monitoring (PCCM) Checklist
• Regulatory/compliance questions
• Troubleshooting operation and maintenance problems
• Asset management training
• Smart sewer and smart data infrastructure training
• Monitoring and modeling training

Please submit any questions or feedback through the comment form. If you are interested in providing feedback on more than one tool, please fill out separate forms for each tool. If you have trouble submitting this form or would like more information about CSO technical assistance opportunities offered by EPA, contact the NPDES program (NPDES@epa.gov).