Skip to main content


Buy Article:

$9.50 plus tax (Refund Policy)

Or sign up for a free trial

There are seven permitted combined sewer overflow (CSO) points within the City (19 mi2 drainage area). The City constructed CSO control facilities in the 1980s to 1990s to provide a level of treatment that was approved by the Georgia Department of Natural Resources, Environmental Protection Division (EPD) at that time. However, the treated discharge does not meet current Federal and State water quality standards, as determined by the presiding judge in a federal lawsuit and the EPD.

To comply with a consent decree, the City must bring its CSOs into compliance by 2007. The consent decree also required several interim steps, including a CSO Control System Evaluation that encompassed an analysis of the combined sewer area and the City's CSO control facilities. Information obtained through this evaluation assisted the City in formulating recommendations for long-term improvements. This paper presents a synopsis of the 6-volume report that documented the 15-month system evaluation task.

Based on the results, the main pollutants of concern for meeting water quality standards are copper (Cu), zinc (Zn), and bacteria (fecal coliform). These two metals exceeded the baseline dissolved criteria frequently enough to cause the evaluation of remedial measures to focus on a high level of control for these metals. However, there are also site-specific factors that need to be examined before establishing appropriate metals criteria. Toxicity testing demonstrated that there was only acute toxicity resulting from residual chlorine, even when metal concentrations were high. The City is improving their existing disinfection facilities, and installing chlorination facilities where there were none previously. Future control improvements will need to eliminate the toxicity from residual chlorine.

Supplemental storm water runoff sampling from parking lots and parks demonstrated high levels of metals (Cu and Zn) and bacteria too. While concentrations were not quite as high, the frequency of exceedences were similar to that of CSO; thus, there are similar water quality compliance issues with storm water runoff even if the sewers were fully separated.
No Reference information available - sign in for access.
No Citation information available - sign in for access.
No Supplementary Data.
No Article Media
No Metrics

Document Type: Research Article

Publication date: 2001-01-01

More about this publication?
  • Proceedings of the Water Environment Federation is an archive of papers published in the proceedings of the annual Water Environment Federation® Technical Exhibition and Conference (WEFTEC® ) and specialty conferences held since the year 2000. These proceedings are not peer reviewed.

    A subscription to the Proceedings of the Water Environment Federation includes access to most papers presented at the annual WEF Technical Exhibition and Conference (WEFTEC) and other conferences held since 2000. Subscription access begins 12 months after the event and is valid for 12 months from month of purchase. A subscription to the Proceedings of the Water Environment Federation is included in Water Environment Federation (WEF) membership.

    WEF Members: Sign in (right panel) with your IngentaConnect user name and password to receive complimentary access. Access begins 12 months after the conference or event
  • Subscribe to this Title
  • Membership Information
  • About WEF Proceedings
  • WEFTEC Conference Information
  • Learn about the many other WEF member benefits and join today
  • Ingenta Connect is not responsible for the content or availability of external websites
  • Access Key
  • Free content
  • Partial Free content
  • New content
  • Open access content
  • Partial Open access content
  • Subscribed content
  • Partial Subscribed content
  • Free trial content
Cookie Policy
Cookie Policy
Ingenta Connect website makes use of cookies so as to keep track of data that you have filled in. I am Happy with this Find out more