Maryland sewage discharges, May 2025
172 records of sewage discharges and water advisories in Maryland dated in May 2025, newest first. Each record keeps the source's own times and wording.
Source: the agencies, sewer operators and EPA records named on each row and on the Sources page. Updated 2026-11-03 02:43 UTC.
Sanitary sewer overflow (SSO): sewage spills from a sewer meant to carry sewage separately from rainwater. Treatment bypass: wastewater skips one or more treatment steps. Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system.
| When | Report | Status |
|---|---|---|
| to Jun 1 ’25, 6:00 AM | Town of Emmitsburg · “Flat Run” · Park Drive · SSO · 180,000 gallons · notice | ended |
| to 6:55 PM | Baltimore City DPW · “Gwynns Falls” · Wabash Ave & Dorchester Rd · SSO · 430 gallons · notice | ended |
| to May 31 ’25, 1:15 AM | Baltimore County DPW · “Herring Run” · 7902 Highpoint Rd · SSO · 40 gallons · notice | ended |
| to Jun 2 ’25, 2:00 AM | Baltimore City DPW · “N/A” · 3501 Asiatic Ave · Bypass · 42 million gallons · notice · map | ended |
| to 11:05 PM | Baltimore City DPW · “Gwynns Falls” · 2121 Wicomico St · SSO · 2,000 gallons · notice · map | ended |
| to 11:50 PM | Baltimore City DPW · “Herring Run” · 3900 Belair Rd · SSO · 476,035 gallons · notice · map | ended |
| to 11:05 PM | Baltimore City DPW · “Jones Falls” · 1901 Falls Rd · SSO · 445,875 gallons · notice · map | ended |
| to 10:55 PM | Baltimore City DPW · “Jones Falls” · SSO · volume not reported · notice | ended |
| to 10:10 PM | Baltimore City DPW · “Jones Falls” · N Charles St and W Lanvale St · SSO · 10,005 gallons · notice · map | ended |
| to 10:20 PM | Baltimore City DPW · “Maiden Choice Creek” · SSO · volume not reported · notice | ended |
| to 10:30 PM | Baltimore City DPW · “Maiden Choice Run” · Charing Cross Rd & Greenwich Ave · SSO · 23,010 gallons · notice | ended |
| to May 31 ’25, 9:00 AM | Allegany County DPW · “Elk Lick Run” · Unknown · CSO · volume not reported · notice | ended |
| to May 31 ’25, 9:00 AM | Allegany County DPW · “Wills Creek” · Old Shellsburg Rd · CSO · volume not reported · notice | ended |
| to Jun 1 ’25, 11:58 PM | Mayor and City Council of Cumberland · “Wills Creek” · Valley Street, Avirett Street, Walnut Place, WWTP, Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street · CSO · 38.56 million gallons · notice | ended |
| to 7:15 PM | Baltimore County DPW · Middle River · 19 Taos Circle · SSO · 30 gallons · notice · map | ended |
| to May 31 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run and George's Creek” · Multiple CSO locations · CSO · 65,000 gallons · notice | ended |
| to May 31 ’25, 9:00 AM | Mayor and City Council of Cumberland · North Branch Potomac River · 10 CSO locations · CSO · 38.56 million gallons · notice · map | ended |
| to Jun 6 ’25 | Anne Arundel County Department of Health · Patapsco River · Beach advisory · volume not reported · notice · map | lifted |
| to Jun 6 ’25 | Anne Arundel County Department of Health · Patapsco River · Beach advisory (earlier version) · volume not reported report · notice · map | listed |
| to May 30 ’25, 2:00 AM | Wssc · “Northeast Branch” · 6806 Greenvale Parkway · SSO · 3 gallons · notice · map | ended |
| to May 30 ’25, 12:32 AM | Baltimore County DPW · “Maiden Choice Creek” · Overbrook Rd & Medwick Garth · SSO · 259,927 gallons · notice · map | ended |
| to 5:45 PM | Baltimore City DPW · “None.” · 3501 Asiatic Avenue · SSO · 200 gallons · notice · map | ended |
| to 4:11 PM | Baltimore City DPW · “N/A” · 1819 Appleton St · SSO · 498 gallons · notice | ended |
| to 12:30 PM | Wssc · “Little Falls” · 5703 Warwick Place · SSO · 135 gallons · notice · map | ended |
| to 12:30 PM | Baltimore City DPW · “storm drain” · 8201 Eastern Blvd · SSO · 4,000 gallons · notice | ended |
| to Jun 5 ’25, 3:00 PM | Maryland Water Service Utilities, Inc. · North Branch Potomac River · Route 220 · Bypass · 1 million gallons · notice · map | ended |
| to Jun 3 ’25, 2:00 PM | Town of Westernport · Potomac River · Main Street · SSO · volume not reported · notice · map | ended |
| to 3:00 PM | Baltimore County DPW · “Storm drain” · 39 Bloomsbury Avenue · SSO · 35 gallons · notice · map | ended |
| to May 29 ’25, 11:00 AM | Baltimore City DPW · “none” · 3501Asiatic Avenue · SSO · 800 gallons · notice | ended |
| to May 29 ’25, 11:00 AM | Baltimore City DPW · “Spilled onto grass near the structure.” · 3501 Asiatic Ave · SSO (earlier version) · 800 gallons · notice · map | ended |
| to May 29 ’25, 11:00 AM | Baltimore City DPW · “Spilled onto the grass next to the structure.” · 3501 Asiatic Avenue · Bypass · 800 gallons · notice · map | ended |
| to May 29 ’25, 8:00 AM | City of Frostburg · “Sand Spring Run and George's Creek” · Three CSO locations · CSO · 30,000 gallons · notice | ended |
| to May 29 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run & Georges Creek” · State Street, FSU Running Track, 009/P.1 · CSO · 30,000 gallons · notice | ended |
| to 10:30 PM | LaVale Sanitary Commission · “Braddock Run” · 1 Old Mt. Savage Road · CSO · 1.14 million gallons · notice | ended |
| to May 29 ’25, 10:27 PM | Mayor and City Council of Cumberland · North Branch Potomac River · WWTP, Mill Race, Oldtown Road, Bedfords Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street · CSO · 40.74 million gallons · notice · map | ended |
| to May 28 ’25, 9:53 AM | Mayor and City Council of Cumberland · North Branch Potomac River · 8 CSO locations · CSO · 40.74 million gallons · notice · map | ended |
| to 8:09 AM | Baltimore City DPW · “N/A” · Clifton Rd & Mondawmin Ave · SSO · 5 gallons · notice · map | ended |
| to 8:09 AM | Baltimore City DPW · “N/A” · 5944 Green Meadow Parkway · SSO · 2 gallons · notice | ended |
| to May 28 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run & George's Creek” · State Street, oufall 009/P.1 · CSO · 49,000 gallons · notice | ended |
| to Jun 1 ’25, 7:00 AM | City of Frostburg · “George's Creek” · Grant St. · CSO · 83,000 gallons · notice | ended |
| to May 28 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run and George's Creek” · 3 CSO locations · CSO · 49,000 gallons · notice | ended |
| to 8:09 AM | Baltimore City DPW · Northwest Harbor · Eastern Ave & S Eden St · SSO · 3 gallons · notice · map | ended |
| to 1:41 PM | Baltimore City DPW · “N/A” · 2119 Kentucky Ave · SSO · 4 gallons · notice · map | ended |
| to 8:10 AM | Baltimore City DPW · “N/A” · 3116 N Calvert St · SSO · 1 gallons · notice · map | ended |
| to 8:30 AM | Baltimore City DPW · “N/A” · 2415 W Franklin St · SSO · 2 gallons · notice · map | ended |
| to May 25 ’25, 11:30 AM | Baltimore City DPW · “None.” · 3501 Asiatic Avenue · Bypass · 40 million gallons · notice · map | ended |
| to 1:45 PM | Baltimore County DPW · 6602 Krone Dr · SSO · 3 gallons · notice | ended |
| to 3:00 PM | Wssc · “Seneca Creek” · 18901 Marsh Hawk Lane · SSO · 1 gallons · notice · map | ended |
| to 11:30 AM | Anne Arundel County DPW · “None.” · 1536 Gordon Cove Drive · SSO · 80 gallons · notice · map | ended |
| to 1:10 PM | Wssc · “Storm drain, Rock Creek” · 13602 Sloan Street · SSO · 91 gallons · notice · map | ended |
| to 11:00 PM | Kent County DPW · 5816 Liberty St · SSO · 49 gallons · notice | ended |
| to May 24 ’25, 10:30 AM | Town of Rock Hall · “On yard and street.” · Multiple locations · SSO · 100 gallons · notice | ended |
| to May 22 ’25, 1:50 PM | Allegany County DPW · “Wills Creek & Potomac River” · Mill Race, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 18.05 million gallons · notice · map | ended |
| to May 22 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run and George's Creek” · 3 CSO locations · CSO · 66,000 gallons · notice | ended |
| to 10:00 AM | Baltimore City DPW · Patapsco River · 3501 Asiatic Ave · Bypass (earlier version) · volume not reported · notice · map | ended |
| to 10:00 AM | Baltimore City DPW · Patapsco River · 3501 Asiatic Avenue · Bypass · 19.6 million gallons · notice · map | ended |
| to 3:45 PM | Town of La Plata · “none” · 400 Willow Lane · SSO · 500 gallons · notice | ended |
| to 11:25 AM | Frederick County Division of Utilities · “Inlet for Lake Linganore, Reached inlet after flowing onto grassy area, flowing thru woods to the inlet.” · Eaglehead Drive · SSO · 250 gallons · notice · map | ended |
| to 10:00 AM | Worcester County DPW · “NA. spilled on gravel area, pumper truck called” · 11224 Dale Rd · SSO (earlier version) · 400 gallons · notice | ended |
| to 12:00 PM | Sun TRS Fort Whaley LLC · “Influent wastewater overflowed onto ground.” · 11224 Dale Rd · SSO · 503 gallons · notice | ended |
| to 1:47 PM | Baltimore City DPW · “Stony Run” · 500 W. University Parkway · SSO · 8,650 gallons · notice · map | ended |
| to 8:30 AM | Baltimore City DPW · “N/A” · 31 S Washington St · SSO · 2 gallons · notice · map | ended |
| to 10:11 PM | Anne Arundel County DPW · “N/A” · 3331 Arundel On The Bay Rd · SSO · 250 gallons · notice · map | ended |
| to 11:00 PM | Baltimore County DPW · “N/A” · 10100 Mill Run Circle · SSO (earlier version) · 55 gallons · notice · map | ended |
| to 11:00 PM | Baltimore County DPW · “retention pond/ stormwater management” · 10100 Mill Run Circle · SSO · 55 gallons · notice | ended |
| to 8:00 AM | Howard County DPW · “Storm drain leading to Hammond Branch.” · 7125 Chardon Court · SSO · 50 gallons · notice · map | ended |
| to May 17 ’25, 12:34 AM | Baltimore County DPW · Bullneck Creek · 7908 Dundalk Ave · SSO · 753,396 gallons · notice · map | ended |
| to May 21 ’25, 5:43 AM | Mayor and City Council of Cumberland · North Branch Potomac River · Oldtown Road, Bedford Street, North Mechanic Street, Franklin Street, Valley Street · CSO · 2.05 million gallons · notice · map | ended |
| to 1:50 PM | Baltimore City DPW · “n/a (the spill was contained within the facility)” · 3501 Asiatic Ave. · SSO · 10,000 gallons · notice | ended |
| to 8:30 AM | Maryland Water Service Utilities, Inc. · “Unknown” · 15601 Packard Drive · SSO · volume not reported · notice · map | ended |
| to 8:15 AM | Baltimore City DPW · “N/A” · 2500 Liberty Heights Ave · SSO · 0 gallons · notice · map | ended |
| to May 16 ’25, 8:30 AM | Baltimore County DPW · “Storm drain” · 3014 bero road · SSO · 163 gallons · notice | ended |
| to 4:30 PM | Anne Arundel County DPW · “N/A it was contained” · 1140 Annapolis Road · SSO · 50 gallons · notice · map | ended |
| Garrett County Sanitary District, Inc. · Youghiogheny River · 237 West Ashley-Ellis Road · Bypass · 2,880 gallons · notice · map | reported | |
| to May 17 ’25, 11:30 AM | Maryland Environmental Service · “Friends Creek” · 17131 Bentzel Road · Bypass · 145,000 gallons · notice · map | ended |
| to 2:46 PM | Baltimore County DPW · “none” · 208 Parkholme Circle · SSO · 10 gallons · notice | ended |
| to 7:45 PM | Baltimore City DPW · Patapsco River · 4403 Greene Avenue · SSO · 10 gallons · notice · map | ended |
| to 9:10 AM | Baltimore City DPW · Back River · 8201 Eastern Avenue · Bypass · 125,000 gallons · notice · map | ended |
| to 8:30 AM | Baltimore City DPW · “N/A” · 4403 Frederick Ave · SSO · 2 gallons · notice · map | ended |
| to May 15 ’25, 6:00 AM | Town of Hancock · Potomac River · East Main Street, Route #40 · SSO · 10,000 gallons · notice · map | ended |
| to May 15 ’25, 8:00 AM | Town of Hancock · Potomac River · Route 40 · SSO · 15,000 gallons · notice · map | ended |
| to May 16 ’25, 1:00 PM | Baltimore City DPW · Back River · 8201 Eastern Ave · SSO · 37,800 gallons · notice · map | ended |
| to 3:00 PM | Baltimore City DPW · “storm drain” · 8201 Eastern Blvd · SSO · 95,605 gallons · notice | ended |
| to 2:25 AM | Baltimore City DPW · “Jones Falls” · 1901 Falls Rd · SSO · 112,000 gallons · notice | ended |
| to May 15 ’25, 3:00 AM | Baltimore City DPW · Patapsco River · 3501 Asiatic Avenue · Bypass · 24 million gallons · notice · map | ended |
| to May 15 ’25, 1:00 PM | Maryland Environmental Service · “unnamed tributary of Little Beaver Creek” · 21843 National Pike · Bypass · 59,100 gallons · notice | ended |
| to 3:38 AM | Baltimore County DPW · “Maiden Choice Creek” · Overbrook Rd & Medwick Garth S · SSO · 6,273 gallons · notice · map | ended |
| to 10:15 AM | Commissioners of Thurmont · “UT to Big Hunting Creek, b/t confluence w/ Bear Branch and Muddy Run. Use Class III-P” · 96 E Moser · Bypass · 240,000 gallons · notice · map | ended |
| to May 16 ’25, 3:21 PM | Mayor and City Council of Cumberland · North Branch Potomac River · Multiple street addresses · CSO · 2.05 million gallons · notice · map | ended |
| to 1:00 AM | Washington County Department of Water Quality · “Salls Creek” · 25040 Penn Mar Road · SSO · 20,000 gallons · notice · map | ended |
| to May 14 ’25, 6:30 AM | Frederick County Division of Utilities · “Unnamed tributary, may be dry when not raining. Leads to Hollow Road Creek.” · 7298 Beechtree Lane · SSO · 34,000 gallons · notice · map | ended |
| to 11:00 PM | Town of Hancock · “No name feeder stream that leads to Potomac” · PA Avenue Pump Station · SSO · 1,000 gallons · notice | ended |
| to May 14 ’25, 6:00 AM | Town of Hancock · Tonoloway Creek · Subway Pump Station · SSO · 5,000 gallons · notice · map | ended |
| to May 14 ’25, 8:00 AM | Maryland Water Service Utilities, Inc. · North Branch Potomac River · 6 manholes · SSO · 232,200 gallons · notice · map | ended |
| to May 14 ’25, 10:00 AM | LaVale Sanitary Commission · “N/A” · Arlington Avenue · CSO · 500,000 gallons · notice | ended |
| to May 16 ’25, 9:00 AM | Allegany County DPW · “Elk Lick Run” · Manhole 127 (Pharmacare) · SSO · volume not reported · notice | ended |
| to May 16 ’25, 9:00 AM | Allegany County DPW · “Elk Lick Run” · Mill Run Pump Station · SSO · volume not reported · notice | ended |
| to May 14 ’25, 5:00 AM | Allegany County DPW · “Georges Creek” · Wrights Crossing Pump Station · CSO · 1.4 million gallons · notice | ended |
| to May 14 ’25, 11:00 AM | Garrett County Sanitary District, Inc. · North Branch Potomac River · 121 Owens Avenue · SSO · 1,000 gallons · notice · map | ended |
| to May 16 ’25, 3:00 PM | Allegany County DPW · “Warrior Run” · Manhole 20 on Darrows Lane · SSO · volume not reported · notice | ended |
| to May 16 ’25, 8:00 AM | Allegany County DPW · North Branch Potomac River · Cresaptown Pump Station · SSO · volume not reported · notice · map | ended |
| to May 16 ’25, 3:00 PM | Allegany County DPW · “Wills Creek” · Corriganville Pump Station · SSO · volume not reported · notice | ended |
| to May 31 ’25, 6:00 PM | Allegany County DPW · Potomac River · 701 Kelly Road · SSO · volume not reported · notice · map | ended |
| to Jul 3 ’25, 3:00 PM | Allegany County DPW · “Georges Creek” · Route #36 · Bypass · volume not reported · notice | ended |
| to Jul 18 ’25, 3:00 PM | Allegany County DPW · Potomac River · Bypass · volume not reported · notice · map | ended |
| to May 15 ’25, 4:00 PM | Allegany County DPW · “Jennings Run” · Manhole 47 between Barrellville and Corriganville · SSO · volume not reported · notice | ended |
| to 8:15 AM | Baltimore City DPW · “N/A” · 2717 Hollins Ferry Rd · SSO · 0 gallons · notice · map | ended |
| to 8:30 AM | Baltimore City DPW · “N/A” · 2606 Chelsea Terrace · SSO · 1 gallons · notice · map | ended |
| to May 16 ’25, 7:00 AM | LaVale Sanitary Commission · “Braddock Run” · Old Mt. Savage Road · CSO · 3.84 million gallons · notice | ended |
| to May 19 ’25, 8:00 AM | Maryland Water Service Utilities, Inc. · Potomac River · Route #220 South(McMullen Highway) · Bypass · 2.7 million gallons · notice · map | ended |
| to May 15 ’25, 8:00 AM | Upper Potomac River Commission · North Branch Potomac River · 528 Maryland Avenue · Bypass · 500,000 gallons · notice · map | ended |
| to May 15 ’25, 8:00 AM | Allegany County DPW · “Georges Creek” · Wrights Crossing Pump Station · CSO · volume not reported · notice | ended |
| to May 14 ’25, 8:00 AM | LaVale Sanitary Commission · “Braddock Run” · 12610 Labers Lane · CSO · 1 million gallons · notice | ended |
| to May 17 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run and George's Creek” · State Street and Grant Street · CSO · 211,000 gallons · notice | ended |
| to May 14 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run & Georges Creek” · FSU running track, 009/P.1 Paul Street, 009/P.2 25 feet southwest of outfall 009/P.1 · CSO · 170,000 gallons · notice | ended |
| to May 14 ’25, 7:00 AM | City of Frostburg · “Jennings Run” · Beall's Lane & Water Street · CSO · 108,000 gallons · notice | ended |
| to May 14 ’25, 10:00 AM | Maryland Environmental Service · North Branch Potomac River · 376 McAndrews Hill Road · SSO · 1,000 gallons · notice · map | ended |
| to May 16 ’25, 9:54 AM | Mayor and City Council of Cumberland · “Will's Creek & Potomac River” · WWTP, Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 772.19 million gallons · notice · map | ended |
| to May 14 ’25, 8:00 AM | LaVale Sanitary Commission · “Braddock Run” · Numerous Manholes · CSO · 200,000 gallons · notice | ended |
| to May 13 ’25, 4:00 AM | Wssc · Patuxent River · 15700 Erwin Court · SSO · 1,594 gallons · notice · map | ended |
| to 8:30 AM | Baltimore City DPW · “N/A” · 1906 Ramblewood Rd · SSO · 3 gallons · notice · map | ended |
| to May 13 ’25, 7:00 AM | City of Frostburg · “Jennings Run” · Water Street and Depot Street · CSO · 8,000 gallons · notice | ended |
| to May 13 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run, Jennings Run, Georges Creek” · State St, Water St and Depot St, Paul St, Grant St · CSO · 38,000 gallons · notice | ended |
| to May 13 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run & George's Creek” · State Street, outfall 009/P1 Paul Street, Grant Street · CSO · 30,000 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 4310 Rugby Rd · SSO · 2 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 2711 Ruscombe Lane · SSO · 0 gallons · notice | ended |
| to 3:15 PM | Baltimore County DPW · “Closest waterway is a UT to Stemmers Run. Caller stated that approx 50 gallons were released onto the grass and seeped into the ground. 5-day letter states did not reach body of water.” · 6209 Kenwood Ave · SSO · 50 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 5944 Green Meadow Pkwy · SSO · 2 gallons · notice | ended |
| Mayor and Council of Myersville · Catoctin Creek · 2868 milt summers road · Bypass · volume not reported · notice · map | reported | |
| to Oct 10 ’25, 8:40 AM | Mayor and Council of Myersville · “Grindstone Run” · 2868 Milt Summer Rd · Bypass · volume not reported · notice · map | ended |
| to 6:00 PM | Baltimore City DPW · “none” · 3501 Asiatic St · SSO · 509 gallons · notice · map | ended |
| to May 10 ’25, 4:00 AM | Allegany County DPW · “Warrior Run” · Manhole 20 on Darrows Lane · SSO · 52,500 gallons · notice | ended |
| to May 10 ’25, 4:00 AM | Allegany County DPW · North Branch Potomac River · Cresaptown Pump Station · SSO · 52,500 gallons · notice · map | ended |
| to 9:35 PM | Mayor and City Council of Cumberland · “Wills Creek, Use Class IV-P” · Bedford St · CSO · 500 gallons · notice | ended |
| to May 12 ’25, 5:00 PM | Baltimore County DPW · “Unnamed tributary that leads to Gwynns Fall” · 300 Church Lane (DUPLICATE) · SSO (earlier version) · 0 gallons · notice | ended |
| to 4:00 PM | Amazon.com Services, LLC · “The sewage discharge entered a stormwater management basin that was discharging. The basin was discharging out of the outfall, and the stormwater, mixed with sewage, entered the inlet for a stormwater conveyance line that runs under the Hagerstown Premium” · 55 West Oak Ridge Drive · SSO · 10 gallons · notice | ended |
| to 5:38 PM | Baltimore City DPW · “storm drain” · 5204 Liberty Heights Ave · SSO · 564 gallons · notice | ended |
| to May 9 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run, George's Creek” · State Street, Tide Gate, Grant Street · CSO · 28,000 gallons · notice | ended |
| to May 12 ’25, 4:00 PM | Baltimore County DPW · “UT to Gwynns Falls, b/t confluence w/ Horsehead Branch and Scotts Level Branch” · 300 Church Ln · SSO · 100 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 1129 N Fulton Ave · SSO · 1 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 821 W Lake Ave · SSO · 2 gallons · notice | ended |
| to May 14 ’25, 2:00 PM | Baltimore City DPW · “Moores Run” · 3303 Chesley Ave · SSO · 2,520 gallons · notice · map | ended |
| to May 8 ’25, 6:00 PM | Howard County DPW · Patuxent River · 9045 Watchlight Court (behind) · SSO · 1 million gallons · notice · map | ended |
| to May 8 ’25, 12:50 PM | Baltimore City DPW · “Gwynns Falls” · 2627 Wegworth Ln · SSO · 8,190 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 2000 N Howard St · SSO · 2 gallons · notice | ended |
| to May 7 ’25, 2:30 AM | Allegany County DPW · “Warrior Run” · Manhole 20 on Darrows Lane · SSO · 67,500 gallons · notice | ended |
| to May 7 ’25, 2:30 AM | Allegany County DPW · North Branch Potomac River · Cresaptown Pump Station · SSO · 67,500 gallons · notice · map | ended |
| to May 7 ’25, 4:30 AM | Allegany County DPW · “Jennings Run” · Manhole 47 - between Barrelville and Corriganville · SSO · 82,500 gallons · notice | ended |
| to May 7 ’25, 4:30 AM | Allegany County DPW · “Wills Creek” · Corriganville Pump Station · SSO · 82,500 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 5501 Fernpark Ave · SSO · 3 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 4238 Roland View Ave · SSO · 5 gallons · notice | ended |
| to May 6 ’25, 2:00 AM | Allegany County DPW · “Georges Creek” · Wrights Crossing Pump Station · CSO · 36,000 gallons · notice | ended |
| to May 6 ’25, 11:00 PM | LaVale Sanitary Commission · “Braddock Run” · Old Mt. Savage Road · CSO · 937,037 gallons · notice | ended |
| to May 6 ’25, 11:30 AM | LaVale Sanitary Commission · “Braddock Run” · 12610 Labers Lane · CSO · 750,000 gallons · notice | ended |
| to 6:10 PM | U.S. Navy · Manahan Road · SSO · 3,500 gallons · notice | ended |
| to 6:00 PM | Baltimore County DPW · “None” · 9210 Oswald Way · SSO · 70 gallons · notice | ended |
| to May 6 ’25, 2:24 AM | Mayor and City Council of Cumberland · North Branch Potomac River · Franklin St., Mill Race, Elizabeth St., Oldtown Rd., Bedford St., N. Mechanic St., Valley St., Avirett St., Walnut Pl. · CSO · 3.23 million gallons · notice · map | ended |
| to May 6 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run and George's Creek” · State Street, FSU running track, outfall 009/P.1, Grant Street · CSO · 39,000 gallons · notice | ended |
| to May 6 ’25, 10:00 AM | Town of Westernport · “SSO was limited to the yard of the property owner of 119 -121 Wood Street, and did not enter "waters of the State".” · 119-121 Wood Street · SSO · 10 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 1904 N Pulaski St · SSO · 1 gallons · notice | ended |
| to May 5 ’25, 11:00 AM | City of Bowie · Patuxent River · 16550 Annapolis Rd · SSO · 300,000 gallons · notice · map | ended |
| to May 9 ’25, 9:00 AM | Mayor and Council of Myersville · “Grindstone Run” · Milt Summers Road · Bypass · 188,000 gallons · notice | ended |
| to May 4 ’25, 7:00 AM | City of Frostburg · “George's Creek” · Grant Street · CSO · 7,000 gallons · notice | ended |
| to 1:28 PM | Maryland Environmental Service · “N/A” · 18901 Roxbury Road · SSO · 8,800 gallons · notice | ended |
| to May 3 ’25, 12:30 PM | Allegany County DPW · “Warrior Run” · Manhole 20 on Darrows Lane · SSO · 91,500 gallons · notice | ended |
| to May 3 ’25, 12:30 PM | Allegany County DPW · North Branch Potomac River · Cresaptown Pump Station · SSO · 91,500 gallons · notice · map | ended |
| to May 2 ’25, 5:00 AM | LaVale Sanitary Commission · “Braddock Run” · 12610 Labers Lane · CSO · 500,000 gallons · notice | ended |
| to May 2 ’25, 3:30 AM | LaVale Sanitary Commission · “Braddock Run” · Old Mt. Savage Road · CSO · 256,494 gallons · notice | ended |
| to 10:30 PM | Wssc · Seneca Creek · 13421 Clopper Rd. · SSO · 652 gallons · notice · map | ended |
| to 7:34 PM | Mayor and City Council of Cumberland · North Branch Potomac River · Mill Race, Elizabeth St., Oldtown Rd., Bedford St., N. Mechanic St., Franklin St., Valley St., Avirett St., Walnut Pl. · CSO · 4.11 million gallons · notice · map | ended |
| to 12:01 AM | Baltimore City DPW · “Gwynns Falls” · 2775 W North Ave · SSO · 10 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “N/A” · 5621 Belair Road · SSO · 1 gallons · notice | ended |
Sources: MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), retrieved 2026-11-03 02:31 UTC; Anne Arundel County Department of Health Recreational Water Closings and Advisories, retrieved 2026-11-03 02:27 UTC. A report's record id and times show when you hover or focus its "report" link.