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Keyword: sewage overflow

Approximately 17,500 Gallons Released into Tributary of Herring Run

Baltimore County’s Department of Public Works has reported a sanitary sewer overflow in the 6600 block of Collinsdale Road in the Parkville-Hillendale area (east of Loch Raven Boulevard and south of Taylor Avenue). A discharge from a sewer line of 17,500 gallons began yesterday (Thursday, September 6) at 2:55 p.m. Utility crews responded immediately and stopped the overflow at 11:55 p.m.

The sanitary sewerage discharge was caused by a broken sewer main. Crews located the break and set up a pump-around, which halted the flow shortly before midnight. Some of the discharge flowed to a tributary of Herring Run. 

Baltimore County Department of Health inspectors investigated the area and observed no signs of sewage in any publicly accessible areas. The overflow site is in a wooded area, which is difficult to reach and mostly surrounded by fencing. Therefore, no alert/advisory signs were posted and no water sampling will be conducted at this time.

When water contact advisories are necessary, they are posted on the Department of Health website at

Overflows in Halethorpe and Catonsville Stopped Within Hours

Baltimore County’s Department of Public Works reported and corrected two sanitary sewage overflows in the County's southwest area following Sunday’s flooding.

The Patapsco Sewage Pumping Station, located at 4612 Annapolis Road in Halethorpe, 21227, was overwhelmed by the storm at 10:32 p.m. Sunday night and discharged 607,000 gallons into the Patapsco River. The overflow was stopped at 2:47 a.m. Monday morning.

The Frederick Road Pumping Station, located at 1809 Frederick Road in Catonsville, 21228, released 47,000 gallons into the Patapsco River. The overflow began at 4:10 p.m. on Sunday afternoon and ceased at 10:08 p.m. that evening.  

The sanitary sewage discharges were due to increases in volume caused by the storm which exceeded the capacities of both stations. When volumes receded, full operations were restored.

As a precaution, contact with the waters of the Patapsco River should be avoided. The Baltimore County Department of Health will issue water contact advisories when necessary on the Department of Health Department's website


Revised September 11, 2017