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Heavy Rains Lead to Wastewater Overflow at Mayo Wastewater Treatment Plant

Bear Neck and Whitemarsh Creek Impacted by Partially Treated Wastewater

Annapolis (June 28, 2006) - The Anne Arundel County, Department of Public Works reports that record-setting rainfall over the past several days has impacted the Mayo Wastewater Treatment Plant located off Central Avenue. Due to extremely high inflow from the wastewater collection system over the past few days, the storage capacity of the plant was exceeded.

At this time, approximately 10,000 gallons of partially treated wastewater has escaped from the peat wetlands, the third of four phases of the treatment process at this facility. Tanker trucks have been on-site and have captured and removed more than 100,000 gallons of the wastewater which is being treated at other county facilities.

It is expected that the flow will continue at above-normal levels until ground and surface water levels subside. An unofficial measurement of rainwater at the plant showed 11’’ of rainfall over the past several days. Tankers will continue to capture and remove as much overflow as possible until the inflow returns to normal levels.

The Department of Health has closed Bear Neck Creek and Whitemarsh Creek as a result of this failure. The Department advises people coming in contact with the affected water to wash with soap and warm water immediately. Clothing should also be washed.  For more information on this emergency closing, call the Water Quality Line at (410) 222-7999 or visit the “Water Quality” page on the
Department’s website.


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