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Maryland sewage discharges, December 2025

84 records of sewage discharges and water advisories in Maryland dated in December 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.

Records in Maryland, December 2025, newest first
When	Report	Status
Dec 31 ’25, 8:45 AMto 11:20 AM	Baltimore City DPW · “No release to storm drains or waterways. Evidence of overflow on the ground in the grass around the cleanout.” · 2912 Erdman Ave · SSO · 85 gallons · notice · map	ended
Dec 31 ’25, 7:00 AMto 9:00 AM	City of Rockville · “Tributary to Watts Branch” · 1510 West Montgomery Ave · SSO · 2,000 gallons · notice · map	ended
Dec 30 ’25, 12:55 PMto 5:45 PM	Wssc · “Cabin John” · 6807 Bradley Blvd · SSO · 460 gallons · notice · map	ended
Dec 30 ’25, 8:00 AMto 8:05 AM	Baltimore City DPW · “N/A” · 1055 Ellicott Drive · SSO · 0 gallons · notice · map	ended
Dec 29 ’25, 12:00 PMto 1:30 PM	Baltimore County DPW · “None.” · 2000 E. Joppa Rd · SSO · 150 gallons · notice · map	ended
Dec 29 ’25, 11:00 AMto Jan 29, 4:00 PM	City of Cambridge DPW · “none” · 3658 Karen Circle · SSO · 1,000 gallons · notice	ended
Dec 29 ’25, 8:00 AMto 8:15 AM	Baltimore City DPW · “N/A” · 422 South Lehigh St · SSO · 1 gallons · notice · map	ended
Dec 29 ’25to Jan 5	Anne Arundel County Department of Health · Patapsco River · Beach closure · volume not reported · notice · map	lifted
Dec 29 ’25to Jan 4	Anne Arundel County Department of Health · Patapsco River · Beach closure (earlier version) · volume not reported report · notice · map	listed
Dec 29 ’25, 12:00 AMto Jan 7, 4:00 PM	Baltimore County DPW · Bear Creek · 734 Avondale Rd. · SSO · volume not reported · notice · map	ended
Dec 28 ’25, 4:40 PMto 10:30 PM	Federal Aviation Administration · “Kitten Branch watershed” · Furnace Ave. · SSO · 50,000 gallons · notice	ended
Dec 28 ’25, 8:00 AMto 8:05 AM	Baltimore City DPW · “N/A” · 215 N Castle St · SSO · 0 gallons · notice	ended
Dec 27 ’25, 3:33 PMto 7:30 PM	Wssc · “Rock Creek watershed, nearest waterway UT to North Branch about 900 ft south.” · 4505 Valley Forge Drive · SSO · 89 gallons · notice · map	ended
Dec 27 ’25, 3:00 PMto 4:00 PM	Howard County DPW · “Nearest waterway is UT to Middle Patuxent River, b/t confluence w/ Carrolls Branch and Little Patuxent River” · 11238 Pear Tree Way · SSO · 500 gallons · notice · map	ended
Dec 27 ’25, 8:00 AMto 8:10 AM	Baltimore City DPW · “N/A” · 1904 N Pulaski St · SSO · 1 gallons · notice	ended
Dec 27 ’25, 8:00 AMto 8:10 AM	Baltimore City DPW · “N/A” · 1231 N Gay St · SSO · 2 gallons · notice	ended
Dec 26 ’25, 7:00 AMto Dec 27 ’25, 7:00 AM	City of Frostburg · “Sand Spring Run and George's Creek” · State Street and Grant Street · CSO · 13,000 gallons · notice	ended
Dec 25 ’25, 8:00 AMto 8:10 AM	Baltimore City DPW · “N/A” · 2907 Wayne Ave · SSO · 1 gallons · notice	ended
Dec 24 ’25, 12:55 PMto 3:49 PM	Baltimore City DPW · “N/A” · 2415 W Franklin St · SSO · 89 gallons · notice	ended
Dec 24 ’25, 8:56 AMto 12:00 PM	Wssc · “The SSO discharged into UT to Cabin Branch, designated use class I-P waterway.” · 9503 Stewartown Road · SSO · 621 gallons · notice	ended
Dec 24 ’25, 6:00 AMto 6:50 AM	Calvert County DPW · Port Tobacco River · 9225 Twin Berry Drive · SSO · 5,000 gallons · notice · map	ended
Dec 23 ’25, 12:38 PMto 3:20 PM	Baltimore City DPW · “Gwynns Falls” · West Mulberry St and Lyndhurst St · SSO · 204 gallons · notice	ended
Dec 22 ’25, 12:30 PMto 4:00 PM	Baltimore County DPW · “None.” · 43 Mill Bridge Court · SSO · 80 gallons · notice · map	ended
Dec 22 ’25, 10:00 AMto 10:30 AM	Baltimore County DPW · “None.” · 7839 Eastern Avenue · SSO · 150 gallons · notice · map	ended
Dec 22 ’25, 7:00 AMto 9:40 PM	Maryland Environmental Service · “middle of solar panel field” · MCI - Solar Field Block #3 · SSO · 240,000 gallons · notice	ended
Dec 21 ’25, 1:51 PMto Dec 22 ’25, 4:04 PM	Baltimore City DPW · “Reported to enter White Marsh Run through the woods. When contacted on 12/22/25, the caller stated that the sso did not reach waters of the State, just on the ground.” · 43 Millbridge Court · SSO · 80 gallons · notice	ended
Dec 21 ’25, 9:17 AMto Apr 21, 1:15 PM	Wssc · “Storm Drain” · 10600 Shasta Court · SSO · 89 gallons · notice	ended
Dec 21 ’25, 8:00 AMto 8:10 AM	Baltimore City DPW · “N/A” · 6 East Lafayette Ave · SSO · 1 gallons · notice · map	ended
Dec 20 ’25, 6:21 PMto 9:40 PM	Wssc · “Storm drain” · 3538 Fiske Terrace · SSO · 100 gallons · notice	ended
Dec 20 ’25, 3:45 PMto 3:45 PM	Baltimore County DPW · 2228 Reistertown Road · SSO · volume not reported · notice	ended
Dec 20 ’25, 9:36 AMto 2:00 PM	Wssc · “Entered storm drain.” · 2306 Shadyside Ave · SSO · 408 gallons · notice	ended
Dec 20 ’25, 8:14 AMto 2:00 PM	Wssc · “Unnamed small creek on the property.” · 2311 Shadyside Ave · SSO · 572 gallons · notice	ended
Dec 20 ’25, 8:00 AMto 8:30 AM	Baltimore City DPW · “N/A” · 2728 Reisterstown Rd · SSO · 3 gallons · notice · map	ended
Dec 19 ’25, 9:00 PMto 11:00 PM	Wssc · Seneca Creek · 19137 St. Johnsbury Lane · SSO · 119 gallons · notice · map	ended
Dec 19 ’25, 5:00 AMto 7:20 AM	Baltimore City DPW · Back River · 8201 Eastern Blvd · Bypass · 1.23 million gallons · notice · map	ended
Dec 19 ’25, 4:01 AMto 4:33 AM	Allegany County DPW · “Wills Creek & Potomac River” · Valley Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Avirett Street, Walnut Place · CSO · 84,800 gallons · notice · map	ended
Dec 18 ’25, 12:49 PMto 4:39 PM	Baltimore City DPW · “Gwynns Falls” · 4025 W. Belvedere Ave · SSO · 850 gallons · notice	ended
Dec 18 ’25, 10:19 AMto 1:04 PM	Montgomery County Revenue Authority · “Did not reach any water” · 7699 New Hampshire Ave · SSO · 150 gallons · notice	ended
Dec 18 ’25, 7:00 AMto Dec 19 ’25, 7:00 AM	City of Frostburg · “Sand Spring Run and George's Creek” · State Street, outfall 009/P.2 Paul Street, Grant Street · CSO · 44,000 gallons · notice	ended
Dec 17 ’25, 3:18 PMto 11:15 PM	Wssc · “Did not reach waters of the state.” · 5134 Wissioming Rd · SSO · 417 gallons · notice	ended
Dec 17 ’25, 10:00 AMto 10:10 AM	Baltimore City DPW · “N/A” · 715 N. Fulton Ave · SSO · 1 gallons · notice · map	ended
Dec 16 ’25, 5:02 PMto 7:30 PM	Wssc · “The WSSC representative said that the SSO was not entering into a waterway. They said that the discharge was just entering into a grassy area. They also said that they did not know if the discharge was traveling into a storm drain, ditch, etc.” · 8416 Barron Street · SSO · 148 gallons · notice · map	ended
Dec 16 ’25, 12:20 PMto Dec 20 ’25, 12:00 PM	Baltimore City DPW · “Gwynns Falls” · 3300 Liberty Height Ave · SSO · 21,200 gallons · notice · map	ended
Dec 15 ’25, 8:04 PMto 9:37 PM	Baltimore City DPW · “N/A” · 3633 Yolando Road · SSO · 139 gallons · notice	ended
Dec 15 ’25, 8:00 PMto Dec 16 ’25, 8:15 AM	Baltimore City DPW · “none” · 3501 Asiatic Ave · Bypass · volume not reported · notice	ended
Dec 15 ’25, 4:15 PMto 7:28 PM	Baltimore City DPW · “N/A” · 3749 Elm Avenue · SSO · 386 gallons · notice	ended
Dec 15 ’25, 1:13 PMto Dec 16 ’25, 9:29 AM	Baltimore City DPW · “N/A” · 4201 Ridgewood Ave · SSO · 608 gallons · notice	ended
Dec 15 ’25, 11:45 AMto 1:15 PM	Howard County DPW · “grassy area” · behind 5496 Ring Dove Lane · SSO · 250 gallons · notice	ended
Dec 15 ’25, 11:09 AMto 1:00 PM	Baltimore City DPW · “N/A” · 1512 Popular Grove · SSO · 1 gallons · notice · map	ended
Dec 15 ’25, 12:05 AMto 12:09 AM	Anne Arundel County DPW · “Cox Creek” · 8833 Wagner Station Rd · SSO · 3,000 gallons · notice · map	ended
Dec 13 ’25, 8:00 AMto 8:30 AM	Baltimore City DPW · “Gwynns Falls” · 4341 Park Heights Ave · SSO · 5 gallons · notice	ended
Dec 13 ’25, 8:00 AMto 8:05 AM	Baltimore City DPW · “N/A” · 3947 Greenmount Ave · SSO · 1 gallons · notice · map	ended
Dec 13 ’25, 8:00 AMto 8:15 AM	Baltimore City DPW · “Gwynns Falls” · 2212 Russell St · SSO · 5 gallons · notice · map	ended
Dec 13 ’25, 8:00 AMto 8:05 AM	Baltimore City DPW · “N/A” · 2900 Overland Ave · SSO · 1 gallons · notice · map	ended
Dec 12 ’25, 3:03 PMto 6:00 PM	Baltimore City DPW · “Gwynns Falls” · 3300 Liberty Heights Ave · SSO · 585 gallons · notice · map	ended
Dec 12 ’25, 10:00 AMto 10:30 AM	Baltimore County DPW · “storm drain” · 7625 German Hill Road · SSO · 25 gallons · notice	ended
Dec 12 ’25, 8:00 AMto 8:15 AM	Baltimore City DPW · “N/A” · 2603 Talbot Rd · SSO · 1 gallons · notice · map	ended
Dec 11 ’25, 2:42 PMto 7:00 PM	Baltimore City DPW · “Chinquapin Run” · 815 Winston Ave · SSO · volume not reported · notice	ended
Dec 10 ’25, 10:24 AMto 11:45 AM	Baltimore City DPW · “none” · 3101 Pulaski & Ellwood St · SSO · 81 gallons · notice	ended
Dec 8 ’25, 1:30 PMto 2:34 PM	Baltimore City DPW · “N/A” · 2415 W. Franklin St · SSO · 32 gallons · notice	ended
Dec 8 ’25, 11:25 AMto 11:45 AM	Baltimore City DPW · “N/A” · 1921 Brunt St · SSO · 2 gallons · notice	ended
Dec 8 ’25, 10:21 AMto 3:23 PM	Baltimore City DPW · “N/A” · 4212 Bonner Rd · SSO · 151 gallons · notice	ended
Dec 7 ’25, 12:49 PMto 6:30 PM	Wssc · “Sligo Creek.” · 8718 - 8722 Manchester Rd · SSO · 1,404 gallons · notice	ended
Dec 7 ’25, 12:09 PMto 4:35 PM	Wssc · “Ground.” · 13810 Connecticut Ave · SSO · 50 gallons · notice	ended
Dec 7 ’25, 8:05 AMto 8:10 AM	Baltimore County DPW · “N/A” · 11235 York Rd · SSO · 10 gallons · notice · map	ended
Dec 6 ’25, 3:25 PMto 5:30 PM	Baltimore City DPW · “DPW reported no nearby storm drains.” · 116 S Wolfe Street · SSO · 2 gallons · notice	ended
Dec 6 ’25, 2:20 PMto 3:53 PM	Baltimore City DPW · “N/A” · 501 S Hanover St · SSO · 93 gallons · notice	ended
Dec 6 ’25, 10:40 AMto 11:50 AM	City of Rockville · “Fallsgrove Stream” · SSO · 2,000 gallons · notice	ended
Dec 5 ’25, 9:30 AMto 9:45 AM	Washington County Department of Water Quality · “None, the spill did not enter surface water” · 22523 Lietersburg - Smithsburg Rd · SSO · 100 gallons · notice	ended
Dec 5 ’25, 8:00 AMto 10:15 AM	Worcester County DPW · “An estimated 500 gallons went into the ditch in front of 1210 Ocean Parkway.” · 1210 Ocean Parkway · SSO · 500 gallons · notice	ended
Dec 4 ’25, 11:46 AMto 12:50 PM	Anne Arundel County DPW · “none” · 8707 Fort Smallwood Rd · SSO · 25 gallons · notice	ended
Dec 4 ’25, 11:46 AMto 12:50 PM	Anne Arundel County DPW · “None.” · 1202 Valley Rd · SSO · 5 gallons · notice · map	ended
Dec 3 ’25, 2:57 PMto 10:07 PM	Baltimore City DPW · “NA” · 4527 Pimlico Road · SSO · volume not reported · notice	ended
Dec 3 ’25, 12:41 PMto 12:42 PM	Charles County DPW · “Groundwater.” · 13000 Pine Grove Rd · SSO · 10 gallons · notice	ended
Dec 3 ’25, 8:30 AMto 8:40 AM	Baltimore City DPW · “N/A” · 1303 Ashland Ave · SSO · 1 gallons · notice · map	ended
Dec 3 ’25, 8:00 AMto 8:05 AM	Baltimore City DPW · “N/A” · 4527 Pimlico Rd · SSO · 0 gallons · notice	ended
Dec 2 ’25, 5:10 PMto 7:10 PM	Howard County DPW · “Absorbed into ground before reaching Little Patuxent River” · 6310 Hillside Court · SSO · 100 gallons · notice · map	ended
Dec 2 ’25, 5:05 PMto 9:30 PM	Wssc · “Seneca Creek” · 19221 Esmond Terrace · SSO · 265 gallons · notice · map	ended
Dec 2 ’25, 1:00 PMto 5:00 PM	Harford County DPW · Blumesberry Ave & Seneca Ave · SSO · 750 gallons · notice	ended
Dec 2 ’25, 1:00 PMto 5:00 PM	City of Havre de Grace · “None.” · Seneca Ave & Bloomsbury Ave · SSO · 750 gallons · notice	ended
Dec 2 ’25, 8:00 AMto 8:10 AM	Baltimore City DPW · “N/A” · 2700 Gwynns Falls Parkway · SSO · 3 gallons · notice · map	ended
Dec 2 ’25, 8:00 AMto 8:05 AM	Baltimore City DPW · “N/A” · 5015 Anntana Ave · SSO · 2 gallons · notice · map	ended
Dec 1 ’25, 1:00 PMto 2:00 PM	Town of Hancock · Tonoloway Creek · 552 Bridge on Main Street · SSO · 4,000 gallons · notice · map	ended
Dec 1 ’25, 10:36 AMto 4:35 PM	Baltimore City DPW · “Tiffany Run” · YorK Road & Cold Spring Lane · SSO · 299 gallons · notice · map	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.