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Maryland · Maryland (MDE)

Private System

Permit N/A

—
No waterway impact reported
Reported events
149
Total volume
642K gal
Reached waterways
0 (0%)
Reporting since
2023

What caused the overflows

Other / Unknown
149

Reported overflow events (showing 149 of 149)

DateVolumeCauseReached waterReceiving water
Apr 26, 2026—Other / Unknown——
Mar 19, 20261K galOther / Unknown—went into another drain, possibly storm drain
Mar 15, 20262 galOther / Unknown—Did not enter.
Mar 15, 20263 galOther / Unknown—Did not enter.
Mar 9, 2026100 galOther / Unknown——
Mar 9, 2026—Other / Unknown—Storm Drain
Feb 28, 2026200 galOther / Unknown—N/A
Feb 26, 2026—Other / Unknown—no in the woods
Feb 20, 20265K galOther / Unknown—Choptank River
Feb 18, 202640 galOther / Unknown—none
Feb 2, 202612K galOther / Unknown—Storm drain
Feb 1, 20261K galOther / Unknown—N/A
Jan 29, 2026300 galOther / Unknown—none
Jan 29, 2026900 galOther / Unknown—unknown
Jan 22, 202650 galOther / Unknown—Retention pond
Jan 14, 202635 galOther / Unknown—The SSO was contained to the immediate area, cleaned, and did not enter "waters of the State". SSO was contained to the sewer pipe.
Jan 7, 20265 galOther / Unknown——
Jan 7, 20263 galOther / Unknown—storm drain
Jan 5, 202640 galOther / Unknown—The overflow never reached a surface body of water, it ponded around the tank area.
Jan 5, 2026500 galOther / Unknown—no
Dec 31, 202585 galOther / Unknown—No release to storm drains or waterways. Evidence of overflow on the ground in the grass around the cleanout.
Dec 29, 20251K galOther / Unknown—none
Dec 7, 202510 galOther / Unknown—N/A
Dec 6, 20252 galOther / Unknown—DPW reported no nearby storm drains.
Dec 3, 202510 galOther / Unknown—Groundwater.
Nov 24, 20252 galOther / Unknown—None.
Nov 21, 2025615 galOther / Unknown—None.
Nov 8, 202580 galOther / Unknown—Intially reported as no release to waterways. SSO contained, but pooling in parking lot. Today I contacted the Manager of the Starbucks who provided the Shopping center's facilities' contact (Tara 443-318-5021) who did not answer the phone nor return my c
Oct 30, 202512K galOther / Unknown—Cabin John Creek
Oct 29, 20252 galOther / Unknown—None.
Oct 22, 202514K galOther / Unknown—N/A
Oct 18, 2025100 galOther / Unknown—Unnamed Tributary of Piney Creek. No sewage has reached any stormdrain or waterway.
Oct 17, 2025150 galOther / Unknown—no
Oct 17, 2025200 galOther / Unknown—None.
Oct 7, 2025297 galOther / Unknown—Herring Run
Sep 16, 202540 galOther / Unknown—did not enter any water of State
Sep 6, 202530 galOther / Unknown—None.
Aug 15, 202510 galOther / Unknown—Stemmers Run closest - did not enter any drainage ditches or storm drains
Aug 13, 2025100 galOther / Unknown—grassy area at rear of 13831 Exeter Court adjacent to CSX Rail line
Jul 24, 20250 galOther / Unknown—None.
Jul 19, 2025100K galOther / Unknown—Choptank River
Jun 28, 20252K galOther / Unknown—Weems Creek
Jun 12, 2025100 galOther / Unknown—Went into storm drain. Closest waterway is Unnamed Tributary to Jones Falls (Use I).
May 24, 20253 galOther / Unknown——
May 19, 2025400 galOther / Unknown—NA. spilled on gravel area, pumper truck called
May 17, 202555 galOther / Unknown—retention pond/ stormwater management
May 15, 2025163 galOther / Unknown—Storm drain
May 14, 202510 galOther / Unknown—none
May 11, 202550 galOther / Unknown—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.
Apr 17, 2025300 galOther / Unknown—None (previously reported Gwynns Falls)
Apr 17, 20255 galOther / Unknown—N/A
Mar 21, 202510 galOther / Unknown—Loch Raven Reservoir (nearest body of water). Did not enter body of water.
Feb 26, 20255 galOther / Unknown—NA
Feb 22, 20256K galOther / Unknown—NA (Gwynns Falls watershed)
Feb 19, 2025120 galOther / Unknown—reached storm drain system - drainage ditch - Gashy's Creek
Feb 7, 2025—Other / Unknown—NA (nearest waterbody is Schoolhouse Cove, confluent to Bear Creek)
Jan 27, 20252 galOther / Unknown—NA (closest water body is Beaver Dam Run)
Jan 4, 20251 galOther / Unknown—NA
Dec 5, 2024300 galOther / Unknown—Storm drain to Chesapeake Bay
Dec 3, 2024—Other / Unknown—just a little spillage out of the manhole not enough to reach waters of the state.
Nov 27, 2024100 galOther / Unknown—Nearest waterway is Big Gunpowder Falls
Nov 19, 2024200 galOther / Unknown—None (closest waterway is UT to East Branch Herbert Run, Patapsco watershed)
Nov 18, 20245 galOther / Unknown—N/A (UT to Patapsco River)
Nov 16, 2024—Other / Unknown——
Nov 7, 202420 galOther / Unknown—N/A (Bullneck Creed watershed)
Oct 28, 20243K galOther / Unknown—none
Oct 22, 202414K galOther / Unknown—Monocacy River
Oct 17, 202425 galOther / Unknown—N/A
Oct 3, 20241K galOther / Unknown—The area which received the overflow was a dry, contained drainage ditch area, Located near to the above-referenced address. This are is not designated as shellfish waters and is not a public drinking water supply.
Sep 22, 2024100 galOther / Unknown—none reported
Sep 15, 2024—Other / Unknown—none
Sep 10, 202420 galOther / Unknown—N/A
Sep 3, 202475 galOther / Unknown—Whitemarsh Run
Sep 3, 202475 galOther / Unknown—White Marsh Run
Aug 13, 202412 galOther / Unknown—The sewage did not reach the waters of the state.
Aug 12, 20243K galOther / Unknown—Antieman Creek, Storm drain
Aug 7, 2024500 galOther / Unknown—Stormwater structure located by the south-west corner of the building.
Jul 11, 2024—Other / Unknown—UT to Piney Run
Jul 8, 2024300 galOther / Unknown—West Branch Marsh Run near Marsh Pike
Jul 2, 202425 galOther / Unknown—N/A
Jun 26, 202420K galOther / Unknown—ditches Little Black River or Shoal Creek
Jun 6, 2024500 galOther / Unknown—ditch (5 gals went in)
Jun 2, 2024250 galOther / Unknown—Curtis Creek
May 31, 20240 galOther / Unknown—storm drain
Apr 28, 202430 galOther / Unknown—Grassy yard, only went 5 feet manhole.
Apr 16, 202435 galOther / Unknown—No
Apr 10, 2024—Other / Unknown—Magothy River
Apr 9, 2024—Other / Unknown—Severn River
Apr 9, 2024—Other / Unknown—Groundwater
Apr 3, 202420 galOther / Unknown—Choptank watershed
Apr 2, 20242K galOther / Unknown—no
Mar 31, 20243K galOther / Unknown—Lake Heron
Mar 25, 20246K galOther / Unknown—none
Mar 24, 2024100 galOther / Unknown—N/A
Mar 24, 20246K galOther / Unknown—Hudson Branch to Inlet Bays
Mar 22, 20242K galOther / Unknown—Entered storm drain at Ulster Ct (near intersection of Ulster Ct and Headwater Rd)
Mar 21, 202425 galOther / Unknown—N/A
Mar 18, 20245K galOther / Unknown—Entered storm drain at Ulster Ct (near intersection of Ulster Ct and Headwater Rd)
Mar 18, 20240 galOther / Unknown—C&O Canal & North Branch of the Potomac River near CSO Outfall 005, Elizabeth Street.
Mar 14, 202410 galOther / Unknown—N/A
Mar 12, 20241K galOther / Unknown—Entered storm drain at Ulster Ct (near intersection of Ulster Ct and Headwater Rd)
Mar 8, 2024350 galOther / Unknown—None known. Closest WWTP is Back River WWTP. Baltimore County is a shellfish harvest county
Mar 2, 202432 galOther / Unknown—Little Patuxent River
Feb 21, 202440 galOther / Unknown—Discharge has not entered waters of the state
Feb 10, 202445 galOther / Unknown—N/A
Feb 7, 202420 galOther / Unknown—ditch
Feb 6, 202425 galOther / Unknown—N/A
Feb 2, 202430 galOther / Unknown—No Discharge to State Waters
Feb 2, 202450 galOther / Unknown—n/a
Jan 31, 202450 galOther / Unknown—none
Jan 26, 20245 galOther / Unknown—N/A
Jan 23, 2024—Other / Unknown—condo building, private system
Dec 26, 20232 galOther / Unknown—none
Dec 23, 20234K galOther / Unknown—N/A
Dec 20, 202312K galOther / Unknown—Storm Management Pond.
Dec 19, 20233K galOther / Unknown—Manokin River
Dec 18, 20239K galOther / Unknown—Adjacent storm drain system.
Dec 18, 202310K galOther / Unknown—Choptank River
Dec 18, 202330 galOther / Unknown—storm drain
Dec 18, 202310K galOther / Unknown—Little Maple Dam Branch
Dec 16, 202375 galOther / Unknown—Watts Branch
Dec 8, 2023500 galOther / Unknown—Rock Creek
Dec 6, 202320 galOther / Unknown—Storm drain
Dec 6, 202320 galOther / Unknown—Back River
Dec 6, 202320 galOther / Unknown—Back River
Dec 3, 2023200 galOther / Unknown—DUPLICATE WITH SSO #8730
Dec 1, 2023200 galOther / Unknown—Near stormdrain that discharges (possibly) into Potapsco
Nov 24, 202315 galOther / Unknown—N/A
Nov 6, 2023300 galOther / Unknown—N/A
Nov 1, 20232 galOther / Unknown—A small amount to ground and possible to groundwater. No surface water discharge.
Oct 26, 202310K galOther / Unknown—N/A
Oct 22, 20232K galOther / Unknown—None
Oct 10, 2023400 galOther / Unknown—Seneca Creek
Sep 27, 202310K galOther / Unknown—Chester River
Sep 26, 2023200 galOther / Unknown—n/a
Sep 24, 20230 galOther / Unknown—Patapsco River (Baltimore Harbor)
Sep 9, 202340 galOther / Unknown—none
Aug 27, 202360 galOther / Unknown—Unnamed tributary to Bill Branch Currently contained on grassy area
Aug 7, 202325K galOther / Unknown—Choptank River
Aug 1, 2023315K galOther / Unknown—Groundwater. Nearest surface water is Marsh Run West approximately 3/4 mile away
Jul 31, 20234 galOther / Unknown—no
Jul 7, 20235 galOther / Unknown—N/A
Jul 3, 20231 galOther / Unknown—Northwest Harbor
Jun 1, 20235 galOther / Unknown—none.
Jun 1, 202310 galOther / Unknown—none
May 17, 202325 galOther / Unknown—N/A
May 2, 20234 galOther / Unknown—none
Apr 20, 2023714 galOther / Unknown—storm drain (Back River)
Mar 6, 202375 galOther / Unknown—Saltpeter Creek

Source: Maryland (MDE). Volumes are utility-reported estimates. Some events lack precise coordinates or volumes.