Maryland sewage discharges, March 2025
90 records of sewage discharges and water advisories in Maryland dated in March 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. Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. Treatment bypass: wastewater skips one or more treatment steps.
| When | Report | Status |
|---|---|---|
| to 11:00 PM | Harford County DPW · “storm drain @ Lafayette/Concord and Alliance/Young” · 105 Lafayette St · SSO · 1,500 gallons · notice | ended |
| to 5:57 PM | Mayor and City Council of Cumberland · North Branch Potomac River · Oldtown Road · CSO · 6,900 gallons · notice · map | ended |
| to 5:00 PM | Anne Arundel County DPW · Stony Creek · 7657 Solley Rd · SSO · 1,000 gallons · notice · map | ended |
| to 4:15 PM | Wssc · “N/A” · 7122 Meadow Green Terrace · SSO · 25 gallons · notice | ended |
| to 2:50 PM | Wssc · “N/A” · 600 Wayne Ave · SSO · 450 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2510 E Strathmore Ave · SSO · 1 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2300 St. Paul Street · SSO · 2 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 1920 Park Ave · SSO · 2 gallons · notice | ended |
| to Mar 31 ’25, 12:04 AM | Baltimore City DPW · “Gwynns Falls (stated did not reach waterway, but large volume discharged)” · 3435 Edmondson Ave · SSO · 510 gallons · notice | ended |
| to Mar 31 ’25, 12:04 AM | Baltimore City DPW · “Gwynns Falls (stated did not reach waterway, but large volume discharged)” · 3435 Edmondson Avenue (DUPLICATE) · SSO (earlier version) · 0 gallons · notice | ended |
| to 9:25 PM | Baltimore City DPW · “NA” · 1612 Westwood Ave (DUPLICATE) · SSO · 50 gallons · notice | ended |
| to 3:00 PM | Baltimore County DPW · “Claim NA but also mitigation was washing it down the street.” · Greenside Dr & Duke of York Ln · SSO · 70 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 831 Harlem Ave · SSO · 1 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 6214 Cross Country Blvd · SSO · 3 gallons · notice | ended |
| to 10:30 PM | Baltimore County DPW · “NA” · 3000 Illinois Ave · SSO · 25 gallons · notice | ended |
| to 1:00 PM | Dorchester County DPW · “Maple Dam Branch” · Maple Dam Pump Station · SSO · 36,000 gallons · notice | ended |
| to 8:15 AM | Maryland Environmental Service · “An estimated 3,000 gallons of sewage overflowed the EQ Basin at the WWTP and pooled on the surrounding asphalt and concrete.” · 29449 Charlotte Hall RD · SSO · 3,000 gallons · notice | ended |
| to 3:30 PM | Somerset County Sanitary District, Inc. · Manokin River · 11831 Beechwood Street · SSO · 180 gallons · notice · map | ended |
| Garrett County Sanitary District, Inc. · Youghiogheny River · 237 West Ashby-Ellis Road · SSO · volume not reported · notice · map | reported | |
| to 10:30 AM | City of Cambridge DPW · Choptank River · 101 Hayward Street · SSO · 500 gallons · notice · map | ended |
| to Mar 27 ’25, 11:52 PM | Baltimore City DPW · “Reported as none, but very large volume; closest waterway is Maidens Choice Run” · 4403 Frederick Avenue · SSO · 1,822 gallons · notice | ended |
| to 3:46 PM | Baltimore City DPW · “NA” · 5105 Roland Rd Ave · SSO · 1 gallons · notice | ended |
| to 5:00 PM | Town of Hancock · “N/A” · Smith Circle · SSO · 25 gallons · notice | ended |
| to 5:00 PM | Wssc · “N/A” · 25-75 E. Wayne Avenue · SSO · 969 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “Gwynns Falls” · 618 N Carrollton Ave · SSO · 1 gallons · notice | ended |
| to 10:21 PM | Baltimore City DPW · “Moores Run” · 3501 Taylor Avenue · SSO · 9,760 gallons · notice | ended |
| to 11:00 AM | Baltimore County DPW · “no” · 6102 Frederick Rd · SSO · 15 gallons · notice | ended |
| to 9:00 PM | Wssc · “n/a” · 13600 Castle Cliff Way · SSO · 69 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2121 Kentucky Ave · SSO · 1 gallons · notice | ended |
| to 8:00 PM | Baltimore County DPW · Loch Raven Reservoir · 115 Wight Avenue · SSO · 10 gallons · notice · map | ended |
| to 1:50 PM | Wssc · “Lower Anacostia” · 4616 Baltimore Avenue · SSO · 50 gallons · notice | ended |
| to 1:50 PM | Calvert County DPW · “There was no discharge to waters of the State” · 4590 Hallowing Point Road · SSO · 300 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2407 Arunah Ave · SSO · 1 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2325 Druid Hill Ave · SSO · 1 gallons · notice | ended |
| to 9:00 PM | Baltimore City DPW · “storm drain to Gwynns Falls” · Ridgewood Ave & Grenada Ave · SSO · 1,014 gallons · notice | ended |
| to Mar 20 ’25, 4:30 AM | Cecil County Government · “unnamed stream” · Carpenters Point Road · SSO · 20,000 gallons · notice | ended |
| to 2:55 PM | Wssc · “N/A” · 15325 Carrolton Road · SSO · 456 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 701 N Carey Street (Duplicate) · SSO (earlier version) · 1 gallons · notice | ended |
| to 12:01 PM | Baltimore City DPW · “NA” · 701 N. Carey St. · SSO · 1 gallons · notice | ended |
| to 12:01 PM | Baltimore City DPW · “NA” · 1706 McCulloh St · SSO · 3 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 1639 Northwick Rd · SSO · 2 gallons · notice | ended |
| to Mar 19 ’25, 12:22 PM | Baltimore City DPW · “Gwynns Falls” · Edmonson Ave and Hilton Pkwy · SSO · 5,860 gallons · notice | ended |
| to 11:27 AM | St. Mary's County Metropolitan Commission · “N/A” · 49888 Airedele Road · SSO · 1,250 gallons · notice | ended |
| to 1:00 PM | Baltimore County DPW · “N/A” · 745 Lannerton Road · SSO · 80 gallons · notice | ended |
| to 6:18 PM | Mayor and City Council of Cumberland · North Branch Potomac River · North Mechanic Street, Mill Race, Bedford Street, Franklin Street, Valley Street · CSO · 80,300 gallons · notice · map | ended |
| to 9:30 PM | Washington County Department of Water Quality · “n/a” · 17805 Oakridge Drive · SSO · 7,000 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2500 Liberty Heights Ave · SSO · 3 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2200 W Lexington St · SSO · 5 gallons · notice | ended |
| to Mar 14 ’25, 12:00 AM | Wssc · “Lake of Kings” · 1 Ballinger Ct · SSO · 253 gallons · notice | ended |
| to 10:30 AM | Baltimore County DPW · “none” · 2611 Gwynndale Avenue · SSO · 40 gallons · notice | ended |
| to 3:20 PM | Anne Arundel County DPW · “Only on impervious surfaces.” · 8833 Wagner Station Road · SSO · 5 gallons · notice · map | ended |
| to 3:00 PM | Baltimore City DPW · “Storm drain to Gwynns Falls” · 3615 W Forest Park Ave · SSO · 610 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 1812 Braddish Ave · SSO · 1 gallons · notice | ended |
| to 2:00 PM | Anne Arundel County DPW · “None.” · 1545 Florida Avenue · SSO · 1,000 gallons · notice · map | ended |
| to 9:35 AM | Anne Arundel County DPW · “none” · 8833 Wagner Station Rd · SSO · 100 gallons · notice | ended |
| to 2:53 PM | Baltimore City DPW · “into a storm drain connected to Moores Run into Herring Run” · 6107 Eastern Parkway · SSO · 2,160 gallons · notice | ended |
| to 2:29 PM | Anne Arundel County DPW · “N/A” · 8198 Old Jumpers Hole Road · SSO · 50 gallons · notice | ended |
| to 3:09 PM | Baltimore City DPW · “NA” · 213 S Eden St · SSO · 172 gallons · notice | ended |
| to 2:40 PM | Mayor and Council of Myersville · “All wastewater was absorbed back into the ground.” · 9629 Myersville Road · SSO · 102,600 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 3027 Wylie Ave · SSO · 2 gallons · notice | ended |
| to 1:05 PM | Harford County DPW · “Reached stormdrain system, percolated into the ground, partially picked up by pumper trucks” · 1012 Magnolia Road · SSO · 5,565 gallons · notice | ended |
| to 7:00 PM | City of Havre de Grace · “Storm drain at Ferdinand Drive” · Bulle & Rock Parkway · SSO · 500 gallons · notice | ended |
| to 4:15 PM | Wssc · “N/A” · 8707 - 8711 Arliss Street · SSO · 110 gallons · notice | ended |
| to 2:15 PM | Baltimore City DPW · “N/A” · 1029 West 29th Street · SSO · 5 gallons · notice | ended |
| to 2:40 PM | Baltimore City DPW · “N/A” · 4600 Hamilton Avenue · SSO · 6 gallons · notice | ended |
| to 12:17 PM | Anne Arundel County DPW · “None.” · 1919 Everglade CT · SSO · 7,000 gallons · notice · map | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · Elizabeth Ave and Harriet Ave · SSO · 20 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2651 Frederick Ave · SSO · 1 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “NA” · 2824 Rosalie Ave · SSO · 1 gallons · notice | ended |
| to Mar 6 ’25, 7:00 AM | Baltimore City DPW · “unknown (under investigation)” · 3501 Asiatic Avenue · Bypass · 25.8 million gallons · notice | ended |
| to 6:30 PM | City of Cambridge DPW · Choptank River · 606 Water Street · SSO · 75,000 gallons · notice · map | ended |
| to 6:30 PM | City of Cambridge DPW · Choptank River · 101 Hayward Street · SSO · 10,000 gallons · notice · map | ended |
| to 8:08 PM | Mayor and City Council of Cumberland · North Branch Potomac River · Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 1.94 million gallons · notice · map | ended |
| to 12:30 PM | Baltimore County DPW · “Herring Run B (sub shed)” · 7016 Sherwood Rd · SSO · 125 gallons · notice | ended |
| to 10:05 AM | American Water Operations & Maintenance, Inc. · “Storm drain” · South east intersection of Rockenbach Rd & O'Brien Rd · SSO · 250 gallons · notice | ended |
| to Mar 6 ’25, 7:00 AM | City of Frostburg · “Sand Spring Run & Georges Creek” · State Street, outfall 009/P.1, Grant Street · CSO · 25,000 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “Gwynns Falls” · 1512 Poplar Grove St · SSO · 1 gallons · notice | ended |
| to 3:34 PM | Baltimore City DPW · “Jones Falls” · 309 Mosher Street · SSO · 396 gallons · notice | ended |
| to 1:30 PM | Wssc · “Rock Creek” · 14529 Parkvale Road · SSO · 131 gallons · notice | ended |
| to 2:00 PM | Howard County DPW · “N/A Only reached grassy area - trench No waterway” · 6101 Old Dobbin Lane · SSO · 2,000 gallons · notice | ended |
| to 11:20 PM | Baltimore City DPW · “NA” · 816 Freemont Ave · SSO · 85 gallons · notice | ended |
| to 8:00 AM | Baltimore City DPW · “none” · 8201 Eastern Blvd · SSO · 400 gallons · notice | ended |
| to 3:36 PM | Baltimore City DPW · “Jones Falls” · 1822 Park Avenue · SSO · 372 gallons · notice | ended |
| to 12:01 AM | Baltimore City DPW · “Gwynns Falls” · 3300 W Forest Park Ave · SSO · 5 gallons · notice | ended |
| to 3:57 PM | Baltimore City DPW · “NA” · 4606 Schenley Road · SSO · 1 gallons · notice | ended |
| to 3:55 PM | Frederick County Division of Utilities · “did not enter Waters of the State” · 6812 Box Turtle Trail · SSO · 50 gallons · notice · map | ended |
| to 1:31 PM | Baltimore County DPW · “none” · 730 Fairmount · SSO · 60 gallons · notice | ended |
| to 1:54 PM | Baltimore City DPW · “Baltimore Harbor” · 250 W Pratt Street · SSO · 867 gallons · notice | ended |
| to 7:15 AM | Worcester County DPW · “ground” · 1126 Ocean Parkway · SSO · 1,000 gallons · notice | ended |
| to 12:01 AM | Calvert County DPW · “Not thought to have reached waterway (Sewell Branch to Huntington Creek is closest)” · 1365 Fairwood Drive · SSO · volume not reported · notice | ended |
Sources: MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), retrieved 2026-11-03 02:31 UTC. A report's record id and times show when you hover or focus its "report" link.