CSO Locations

• CSO Location Map

CSO Project Information

• Christian Brook Separation Project Contract 1 and Contract 2
• Cemetery Brook Drain Tunnel Project Press Release

CSO Compliance Reports - 2025

• CSO Consent Decree Report No. 9 - January 1 to June 30, 2025

• CSO Consent Decree Report No. 10 – July 1 to December 31, 2025

• 2025 Combined Sewer Overflow DMRs

CSO Compliance Reports – 2024

• CSO Consent Decree Report No. 8 - July 1 to December 31, 2024

• CSO Consent Decree Report No. 7 - January 1 to June 30, 2024 

• 2024 Combined Sewer Overflow DMRs

CSO Compliance Reports - 2023

• CSO Compliance Report No. 5 - January 1 to June 30, 2023
• CSO Compliance Report No. 6 - July 1 to December 31, 2023
• 2023 Combined Sewer Overflow DMRs

CSO Compliance Reports - 2022

• CSO Compliance Report No. 3 - January 1 - June 30, 2022
• CSO Compliance Report No. 4 – July 1 – December 31, 2022
• 2022 Combined Sewer Overflow DMRs

CSO Compliance Reports - 2021

• CSO Compliance Report No. 2 - July 1 - December 31, 2021
• CSO Compliance Report No. 1 - January 1 - June 30, 2021
• 2021 Combined Sewer Overflow DMRs

CSO Continuous Flow Monitoring Program Results - 2015

• CSO_FMR_Cover2015
• CSO_Observations_for_Going_Forward2015

CSO Continuous Flow Monitoring Program Results - 2014

• CSO_FMR_Cover2014
• CSO_Observations_for_Going_Forward2014

CSO Continuous Flow Monitoring Program Results - 2013

• CSO_FMR_Cover2013
• CSO_Observations_for_Going_Forward2013

Revised Long Term CSO Control Plan - March 2010

• CSO_Cover
• CSO_Executive_Summary

CSO Abatement Program Phase I Summary Report 2009

• CSO Abatement Program Phase I Summary Report 2009 (51MB)