News Release 336

Department of Natural Resources responds to pair of wastewater releases in Jefferson City

Volume 38-336 (For Immediate Release)
Contact:  Larry Archer

JEFFERSON CITY, MO, JUNE 8, 2010 – The Missouri Department of Natural Resources is investigating a pair of wastewater releases reported Monday in Jefferson City.

City officials contacted the department Monday to report that a valve failure on a sewer main one quarter mile north of the intersection of West Main Street and Rock Hill Road resulted in the release of an undetermined amount of wastewater into a nearby unnamed tributary that discharges to Grays Creek.

The department dispatched an investigator from its Northeast Regional Office in Macon to determine the level of environmental damage caused by the release.

While on the scene, the investigator also learned of a release caused by roots in a sewer line that forced wastewater to back up and overflow from a manhole on Hawthorne Parkway. An undetermined amount of sewer flowed from the manhole into an unnamed tributary to Wears Creek.  

Clean water regulations require the city to submit a report detailing the release to the department within five days. The department will base future enforcement action on the city’s report and the findings of the investigator.

The department considers discharges of wastewater from sanitary sewer collection systems to be potential threats to public health and the environment. Such discharges have the potential to contaminate lakes and streams, causing serious water quality problems.

Sanitary sewer overflows can be caused by obstructions in sewer lines, mechanical failure, infiltration of rainwater and snow melt into aging systems, or undersized systems that cannot compensate for sudden increases in wastewater.

Communities across Missouri produce millions of gallons of wastewater that must be properly transported and treated before being released to waterways. However, some communities are facing challenges in accomplishing this.

In order to protect public health and the environment, the department requires communities to take appropriate action to eliminate their sanitary sewer overflow issues. To do this, communities should develop a system to track information about such incidents, including the date, time, location and size of the overflow, weather data, who notified them, when they notified the department and the measures taken to respond. The community can then use this data to aid in developing a plan to inspect the collection system, and plan and finance system upgrades.

For more information on sanitary sewer overflows or other water quality issues, contact the Department of Natural Resources’ Water Protection Program at 573-751-1300 or 800-361-4827 or visit the department website at

To report an environmental emergency, including sewage overflows, please contact the DNR spill line at 573-634-2436. For more information contact the department at 800-361-4827 or 573-751-3443, or visit the department's Web page at