3:55 PM UPDATE – Repairs Completed on Sewer Main in Olney

Additional Inspection Scheduled for Sewer Main

| News Release



Laurel – August 13, 2015 – Repairs are complete on a 20-inch pressurized sewer main in Olney. This Sanitary Sewer Overflow (SSO) was mostly contained to the grassy areas near the break site with minimal impact to the area waterways.

The Sanitary Sewer Overflow (SSO) at the force main failure site began at approximately 6:30 am and ended at 10:00 am when the Olney Wastewater Pumping Station (WWPS) was shut down to facilitate repairs. The estimated total volume from the force main failure is 110,880 gallons. As a result of the pump station shut down, manholes at the Olney WWPS began to overflow at approximately 1:45 pm and ended at 9:35 pm on August 12, 2015, after the Olney WWPS was put back in service. The estimated total volume from the WWPS overflow is 159,911 gallons. The total overflow volume for the SSO is 270,791 gallons.

Septic haulers were onsite at the WWPS transferring the wastewater entering Olney WWPS to Reddy Branch WWPS. Haulers were able to prevent approximately 123,425 gallons from overflowing, minimizing the amount of the overflow and the environmental impact to nearby waterways.

WSSC has completed interior inspections of two sections of the force main via closed circuit television (CCTV), and both revealed severe deterioration of the pipe. WSSC is currently assessing the condition of the entire force main to determine a more comprehensive solution that will eliminate future breaks. In addition, a consultant is scheduled to inspect the force main the week of August 24, to determine if there are other leaks that may not have surfaced.

Posted signs have been updated warning residents to avoid the affected area including Lake Hallowell. Browns Bridge Recreation Area remains closed. Restoration around the manholes at the WWPS has been completed and the area has been raked and lime and straw have been applied.

It is important to note that WSSC’s water and wastewater systems are separate. The wastewater overflows do NOT affect WSSC’s drinking water system. Notifications have been made to Maryland Department of the Environment, Montgomery County Department of Environmental Protection and the surrounding community.

WSSC is committed to protecting the health of the public and the environment. WSSC appreciates notification from citizens if a sewer back up or water main break is suspected. Please call our 24 hour Emergency Call Center at 301-206-4002 to report water or sewer emergencies in Montgomery or Prince George's counties. Customers can also report emergencies via email at emergencycallcenter@wsscwater.com and those customers who have smart phones can report emergencies using the WSSC Mobile App.

WSSC Water is the proud provider of safe, seamless and satisfying water services, making the essential possible every day for our neighbors in Montgomery and Prince George’s counties. We work to deliver our best because it’s what our customers expect and deserve.

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