Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system)
Sewer utility with combined sewers · Maryland · Cumberland
Map sources: water outlines and launches from OpenBoatLaunch and OpenStreetMap contributors (Open Database License); wastewater outlets from EPA and state records; downstream estimates by DirtyWaterWatch using U.S. Geological Survey maps and flow data. Base map: OpenFreeMap and OpenMapTiles.
No outlet locations are in our records for this operator. Square boat markers mark boat launches listed by OpenBoatLaunch.
- Federal wastewater discharge permit (NPDES)
- MD0021598
- Wastewater outlets
- None with locations in our records (the state's records list 11)
- Waters listed as receiving wastewater
- Wills Creek; North Branch Potomac River; Evitts Creek
- Tracked waters
- North Branch Potomac River, MD, Potomac River, MD, Wills Creek, MD, Braddock Run, MD
- Discharge records counted
- 187 records · latest
- Total reported volume in these records
- 1,183,482,563 gallons across the 186 records that give a volume (1 without one)
These totals reflect the records we track. Missing volumes and gaps in reporting limit comparisons between operators.
Sources: EPA ECHO and the operator and state sources linked below. Counts use the discharge records on this page. Updated 2026-11-03 08:50 UTC.
Public notices and alerts
Pages where Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system) or the state publishes its notices (check them for an alert sign-up):
Source: Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system)'s public notice and alert pages and the state's notification records.
Report a missing notice or error
Wastewater outlets
Outfall: a pipe or outlet where wastewater enters a water body.
Reports and advisories
Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system.
| When | Report | Status |
|---|---|---|
| to 3:04 PM | Wills Creek · Franklin Street, Bedford Street, Valley Street · CSO · 10,000 gallons report · notice · map | ended |
| to Oct 12, 8:20 AM | North Branch Potomac River · WWTP, Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 22.26 million gallons report · notice · map | ended |
| to Sep 22, 3:24 AM | North Branch Potomac River · Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 3.17 million gallons report · notice · map | ended |
| to 11:41 AM | North Branch Potomac River · North Mechanic Street, Mill Race, Oldtown Road, Bedford Street, Franklin Street, Valley Street, Avirett Street · CSO · 182,000 gallons report · notice · map | ended |
| to 9:19 PM | North Branch Potomac River · Mill Race, Elizabeth Street, Oldtown Road, Bedford Road, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 1.41 million gallons report · notice · map | ended |
| to 5:06 AM | Wills Creek · Bedford Street, Franklin Street, Valley Street · CSO · 12,600 gallons report · notice · map | ended |
| to 8:26 PM | North Branch Potomac River · Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 2.52 million gallons report · notice · map | ended |
| to 2:34 PM | Wills Creek · Franklin Street, Valley Street, Bedford Street · CSO · 6,500 gallons report · notice · map | ended |
| to 5:03 AM | Wills Creek · Valley Street & Franklin Street · CSO · 6,300 gallons report · notice · map | ended |
| to Aug 15, 3:31 AM | North Branch Potomac River · Valley Street, Mill Race, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Avirett Street · CSO · 66,400 gallons report · notice · map | ended |
| to Aug 11, 3:10 AM | North Branch Potomac River · Elizabeth Street & Valley Street · CSO · 5,300 gallons report · notice · map | ended |
| to 10:38 AM | Potomac River · 9 CSO locations · CSO · 190,800 gallons report · notice · map | ended |
| to 2:38 PM | North Branch Potomac River · Valley Street, Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Avirett Street, Walnut Place · CSO · 750,600 gallons report · notice · map | ended |
| to 8:49 PM | “Entered storm drains to the Potomac River & Wills Creek” · Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place · CSO · 174,400 gallons report · notice · map | ended |
| to 6:44 PM | North Branch Potomac River · Valley Street, Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Avirett Street · CSO · 63,300 gallons report · notice · map | ended |
| to 4:38 PM | North Branch Potomac River · Valley Street, Mill Race, Oldtown Road, N. Mechanic Street, Franklin Street, Avirett Street · CSO · 46,500 gallons report · notice · map | ended |
| to 10:45 PM | North Branch Potomac River · Elizabeth St, Oldtown Road, Bedford Street, Valley Street, Avirett Street · CSO · 142,600 gallons report · notice · map | ended |
| to 7:29 PM | North Branch Potomac River · Franklin Street, WWTP, Mill Race, Elizabeth Street, Oldown Road, Bedford Street, N. Mechanic Street, Valley Street, Avirett Street, Walnut Place · CSO · 7.55 million gallons report · notice · map | ended |
| to 1:56 PM | North Branch Potomac River · Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street · CSO · 108,500 gallons report · notice · map | ended |
| to 5:38 AM | North Branch Potomac River · Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street · CSO · 87,100 gallons report · notice · map | ended |
| to 11:21 PM | North Branch Potomac River · Mill Race, Oldtown Road, Bedford Street, N. Mechanic Street, Valley Street, Avirett Street, Walnut Place · CSO · 207,600 gallons report · notice · map | ended |
| to 9:34 AM | North Branch Potomac River · Valley Street, Mill Race, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Avirett Street, Walnut Place · CSO · 150,200 gallons report · notice · map | ended |
| to 11:11 PM | Wills Creek · Valley St. / Rt.40 · CSO · 4,800 gallons in all map | ended |
| to 11:11 PM | Wills Creek · Valley St. / Rt.40 · CSO · 2,400 gallons report · notice · map | ended |
| to 11:11 PM | Wills Creek · Valley Street · CSO · 2,400 gallons report · notice · map | ended |
| to 7:11 PM | Wills Creek · Valley Rd, N. Mechanic Street & Franklin Street · CSO · 57,500 gallons report · notice · map | ended |
Sources: MDE Reported Sewer Overflows (New for 2023), Maryland Open Data Portal (Socrata stgj-u72u), retrieved 2026-11-03 08:17 UTC. A report's record id and times show when you hover or focus its "report" link.
Showing the latest 25 records of 188 records.See them all with filters.
All reports in Maryland by year: 2026 (41 from Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system)) · 2025 (46 from Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system)) · 2024 (51 from Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system)) · 2023 (50 from Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system))
Other sewer operators on these waters
- North Branch Potomac River, MD: Allegany County Department of Public Works (CSO collection system and North Branch / Georges Creek sewers), City of Frostburg (combined sewer system), LaVale Sanitary Commission (combined sewer overflows), Maryland Water Service Utilities (Allegany County), Town of Westernport (former CSO permit), Garrett County Sanitary District, Maryland Environmental Service (state-run plants)
- Potomac River, MD: Charles County Department of Public Works (Mattawoman WWTP), District of Columbia Water and Sewer Authority (DC Water), Town of Hancock, Washington County Department of Water Quality, WSSC Water (Washington Suburban Sanitary Commission), Allegany County Department of Public Works (CSO collection system and North Branch / Georges Creek sewers), Town of Westernport (former CSO permit), Maryland Water Service Utilities (Allegany County), St. Mary's County Metropolitan Commission (MetCom), U.S. Navy installations (Annapolis, Indian Head, Patuxent River)
- Wills Creek, MD: Allegany County Department of Public Works (CSO collection system and North Branch / Georges Creek sewers)
- Braddock Run, MD: LaVale Sanitary Commission (combined sewer overflows)
The last 90 days
- Caution: to 1 report: Wills Creek 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Wills Creek 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: North Branch Potomac River 1, Wills Creek 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: Wills Creek 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Wills Creek 1
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: North Branch Potomac River 1, Wills Creek 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: Wills Creek 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Wills Creek 1
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: North Branch Potomac River 1, Wills Creek 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Wills Creek 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: North Branch Potomac River 1, Potomac River 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 2 reports: North Branch Potomac River 1, Potomac River 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: Potomac River 1
Show records
The records are also in the report table on this page.
- Caution: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
- Discharge or advisory reported: to 1 report: North Branch Potomac River 1
Show records
The records are also in the report table on this page.
Source: DirtyWaterWatch calculations using the reports named above and the published status rules. Updated 2026-11-03 08:50 UTC.
Reported discharges over time
- Discharges reported by Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system), last 12 months41December 2025 to November 2026Verified reports where available, else notices; revisions and duplicates counted once.
- Days with a discharge reported by Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system), last 12 months46December 2025 to November 2026A day counts once however many discharges were under way on it. Verified reports where available, else notices; revisions and duplicates counted once.
- Hours with a discharge or advisory status from Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system)'s reports, last 12 months203December 2025 to November 2026Red hours by the map's rules: each discharge to its reported end plus the state's post-discharge period; overlapping hours count once.
- 2026 season with a discharge or advisory status (Mayor and City Council of Cumberland (Water Reclamation Facility and combined sewer system))3.8%May to October 2026Share of May 1 to October 31 hours with red status by the map's rules, of the hours a source covered.
Combined sewer overflow (CSO): sewage mixed with rainwater spills from a shared sewer system. 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. Blended discharge: wastewater that skipped some treatment is mixed with treated wastewater. Outfall: a pipe or outlet where wastewater enters a water body.
Reported discharges per month
187 reported discharges, January 2022 to November 2026.
- Combined sewer overflow
- Sanitary sewer overflow
- Treatment bypass, blended or other
- No tracked source for this period
- Incomplete source coverage
No tracked source covers January 2022 to December 2022.
Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.
Show table
| Month | Combined sewer overflow | Sanitary sewer overflow | Treatment bypass, blended or other | Total | Counted from | Coverage |
|---|---|---|---|---|---|---|
| January 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| February 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| March 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| April 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| May 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| June 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| July 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| August 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| September 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| October 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| November 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| December 2022 | 0 | 0 | 0 | 0 | No tracked source for this period | |
| January 2023 | 0 | 0 | 0 | 0 | Incomplete source coverage | |
| February 2023 | 3 | 0 | 0 | 3 | Source records | |
| March 2023 | 5 | 0 | 0 | 5 | Source records | |
| April 2023 | 7 | 0 | 0 | 7 | Source records | |
| May 2023 | 2 | 0 | 0 | 2 | Source records | |
| June 2023 | 4 | 0 | 0 | 4 | Source records | |
| July 2023 | 4 | 0 | 0 | 4 | Source records | |
| August 2023 | 9 | 0 | 0 | 9 | Source records | |
| September 2023 | 5 | 0 | 0 | 5 | Source records | |
| October 2023 | 8 | 0 | 0 | 8 | Source records | |
| November 2023 | 1 | 0 | 0 | 1 | Source records | |
| December 2023 | 2 | 0 | 0 | 2 | Source records | |
| January 2024 | 4 | 0 | 0 | 4 | Source records | |
| February 2024 | 4 | 0 | 0 | 4 | Source records | |
| March 2024 | 5 | 1 | 0 | 6 | Source records | |
| April 2024 | 7 | 0 | 0 | 7 | Source records | |
| May 2024 | 7 | 1 | 0 | 8 | Source records | |
| June 2024 | 4 | 0 | 0 | 4 | Source records | |
| July 2024 | 2 | 1 | 0 | 3 | Source records | |
| August 2024 | 6 | 0 | 0 | 6 | Source records | |
| September 2024 | 3 | 0 | 0 | 3 | Source records | |
| October 2024 | 0 | 0 | 0 | 0 | ||
| November 2024 | 2 | 0 | 0 | 2 | Source records | |
| December 2024 | 3 | 0 | 0 | 3 | Source records | |
| January 2025 | 0 | 0 | 0 | 0 | ||
| February 2025 | 4 | 1 | 0 | 5 | Source records | |
| March 2025 | 3 | 0 | 0 | 3 | Source records | |
| April 2025 | 3 | 0 | 0 | 3 | Source records | |
| May 2025 | 10 | 0 | 0 | 10 | Source records | |
| June 2025 | 8 | 0 | 0 | 8 | Source records | |
| July 2025 | 9 | 0 | 0 | 9 | Source records | |
| August 2025 | 2 | 0 | 0 | 2 | Source records | |
| September 2025 | 2 | 0 | 0 | 2 | Source records | |
| October 2025 | 2 | 0 | 0 | 2 | Source records | |
| November 2025 | 2 | 0 | 0 | 2 | Source records | |
| December 2025 | 0 | 0 | 0 | 0 | ||
| January 2026 | 1 | 0 | 0 | 1 | Source records | |
| February 2026 | 1 | 0 | 0 | 1 | Source records | |
| March 2026 | 2 | 0 | 0 | 2 | Source records | |
| April 2026 | 5 | 0 | 0 | 5 | Source records | |
| May 2026 | 6 | 0 | 0 | 6 | Source records | |
| June 2026 | 7 | 0 | 0 | 7 | Source records | |
| July 2026 | 5 | 0 | 0 | 5 | Source records | |
| August 2026 | 8 | 0 | 0 | 8 | Source records | |
| September 2026 | 4 | 0 | 0 | 4 | Source records | |
| October 2026 | 2 | 0 | 0 | 2 | Source records | |
| November 2026 | 0 | 0 | 0 | 0 |
Hours with a discharge or advisory status per month
Hours when a water had a discharge or advisory status from this sewer operator's reports, under DirtyWaterWatch rules.
- Discharge or advisory reported
- No tracked source for this period
- Incomplete source coverage
No tracked source covers January 2022 to December 2022. Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.
Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.
Show table
| Month | Hours with a discharge or advisory status | Hours from post-discharge periods | Hours in the month | Coverage |
|---|---|---|---|---|
| January 2022 | 0 | 0 | 744 | No tracked source for this period |
| February 2022 | 0 | 0 | 672 | No tracked source for this period |
| March 2022 | 0 | 0 | 744 | No tracked source for this period |
| April 2022 | 0 | 0 | 720 | No tracked source for this period |
| May 2022 | 0 | 0 | 744 | No tracked source for this period |
| June 2022 | 0 | 0 | 720 | No tracked source for this period |
| July 2022 | 0 | 0 | 744 | No tracked source for this period |
| August 2022 | 0 | 0 | 744 | No tracked source for this period |
| September 2022 | 0 | 0 | 720 | No tracked source for this period |
| October 2022 | 0 | 0 | 744 | No tracked source for this period |
| November 2022 | 0 | 0 | 720 | No tracked source for this period |
| December 2022 | 0 | 0 | 744 | No tracked source for this period |
| January 2023 | 0 | 0 | 744 | Incomplete source coverage |
| February 2023 | 15 | 15 | 672 | |
| March 2023 | 120 | 120 | 744 | |
| April 2023 | 34 | 34 | 720 | |
| May 2023 | 14 | 14 | 744 | |
| June 2023 | 10 | 10 | 720 | |
| July 2023 | 78 | 78 | 744 | |
| August 2023 | 11 | 11 | 744 | |
| September 2023 | 15 | 15 | 720 | |
| October 2023 | 12 | 12 | 744 | |
| November 2023 | 15 | 15 | 720 | |
| December 2023 | 14 | 14 | 744 | |
| January 2024 | 107 | 107 | 744 | |
| February 2024 | 93 | 93 | 696 | |
| March 2024 | 158 | 158 | 744 | |
| April 2024 | 168 | 168 | 720 | |
| May 2024 | 34 | 34 | 744 | |
| June 2024 | 9 | 9 | 720 | |
| July 2024 | 2 | 2 | 744 | |
| August 2024 | 39 | 39 | 744 | |
| September 2024 | 24 | 24 | 720 | |
| October 2024 | 12 | 12 | 744 | |
| November 2024 | 5 | 5 | 720 | |
| December 2024 | 2 | 2 | 744 | |
| January 2025 | 0 | 0 | 744 | |
| February 2025 | 16 | 16 | 672 | |
| March 2025 | 14 | 14 | 744 | |
| April 2025 | 25 | 25 | 720 | |
| May 2025 | 306 | 306 | 744 | |
| June 2025 | 125 | 125 | 720 | |
| July 2025 | 17 | 17 | 744 | |
| August 2025 | 25 | 25 | 744 | |
| September 2025 | 2 | 2 | 720 | |
| October 2025 | 9 | 9 | 744 | |
| November 2025 | 3 | 3 | 720 | |
| December 2025 | 0 | 0 | 744 | |
| January 2026 | 2 | 2 | 744 | |
| February 2026 | 18 | 18 | 672 | |
| March 2026 | 6 | 6 | 744 | |
| April 2026 | 11 | 11 | 720 | |
| May 2026 | 60 | 60 | 744 | |
| June 2026 | 12 | 12 | 720 | |
| July 2026 | 13 | 13 | 744 | |
| August 2026 | 39 | 39 | 744 | |
| September 2026 | 21 | 21 | 720 | |
| October 2026 | 22 | 22 | 744 | |
| November 2026 | 0 | 0 | 53 |
Days with a reported discharge per month
A day counts when any counted discharge was under way on it, from its start to its reported end in Eastern Time; a report with no end counts its start day.
- No tracked source for this period
- Incomplete source coverage
No tracked source covers January 2022 to December 2022.
Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.
Show table
| Month | Days with a reported discharge | Coverage |
|---|---|---|
| January 2022 | 0 | No tracked source for this period |
| February 2022 | 0 | No tracked source for this period |
| March 2022 | 0 | No tracked source for this period |
| April 2022 | 0 | No tracked source for this period |
| May 2022 | 0 | No tracked source for this period |
| June 2022 | 0 | No tracked source for this period |
| July 2022 | 0 | No tracked source for this period |
| August 2022 | 0 | No tracked source for this period |
| September 2022 | 0 | No tracked source for this period |
| October 2022 | 0 | No tracked source for this period |
| November 2022 | 0 | No tracked source for this period |
| December 2022 | 0 | No tracked source for this period |
| January 2023 | 0 | Incomplete source coverage |
| February 2023 | 4 | |
| March 2023 | 8 | |
| April 2023 | 8 | |
| May 2023 | 2 | |
| June 2023 | 5 | |
| July 2023 | 7 | |
| August 2023 | 9 | |
| September 2023 | 6 | |
| October 2023 | 3 | |
| November 2023 | 2 | |
| December 2023 | 3 | |
| January 2024 | 9 | |
| February 2024 | 8 | |
| March 2024 | 12 | |
| April 2024 | 11 | |
| May 2024 | 10 | |
| June 2024 | 4 | |
| July 2024 | 3 | |
| August 2024 | 6 | |
| September 2024 | 3 | |
| October 2024 | 1 | |
| November 2024 | 2 | |
| December 2024 | 2 | |
| January 2025 | 0 | |
| February 2025 | 6 | |
| March 2025 | 3 | |
| April 2025 | 4 | |
| May 2025 | 18 | |
| June 2025 | 12 | |
| July 2025 | 10 | |
| August 2025 | 2 | |
| September 2025 | 2 | |
| October 2025 | 2 | |
| November 2025 | 2 | |
| December 2025 | 0 | |
| January 2026 | 1 | |
| February 2026 | 2 | |
| March 2026 | 2 | |
| April 2026 | 5 | |
| May 2026 | 7 | |
| June 2026 | 6 | |
| July 2026 | 5 | |
| August 2026 | 10 | |
| September 2026 | 5 | |
| October 2026 | 3 | |
| November 2026 | 0 |
Reported volume per year
Gallons (axis: K thousand, M million), summed from the 186 reports that gave a volume as a number (1 did not).
- Incomplete source coverage
1 of 187 discharge reports gave no volume as a number; only numbers are summed.
Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.
Show table
| Year | Reported volume, gallons | Reports with a volume | Reports without a volume | Coverage |
|---|---|---|---|---|
| 2023 | 41,552,876 | 50 | 0 | Incomplete source coverage |
| 2024 | 117,686,109 | 49 | 1 | |
| 2025 | 964,199,182 | 46 | 0 | |
| 2026 | 60,044,396 | 41 | 0 |
Hours with a discharge or advisory status per year
Hours with a discharge or advisory status each year under DirtyWaterWatch rules; 2026 to date.
- Discharge or advisory reported
- Incomplete source coverage
Official beach and cyanobacteria (harmful blue-green algae) advisories are counted on water pages only.
Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.
Show table
| Year | Hours with a discharge or advisory status | Share of the year | Coverage |
|---|---|---|---|
| 2023 | 338 | 3.9% | Incomplete source coverage |
| 2024 | 651 | 7.4% | |
| 2025 | 541 | 6.2% | |
| 2026 | 203 | 2.8% |
Reported discharges by calendar month, all years
Every counted discharge report, by the calendar month it began.
Months are summed over every year a tracked source covers; the table gives the number of years behind each month.
Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.
Show table
| Month | Reported discharges | Years of records |
|---|---|---|
| January | 5 | 4 |
| February | 13 | 4 |
| March | 16 | 4 |
| April | 22 | 4 |
| May | 26 | 4 |
| June | 23 | 4 |
| July | 21 | 4 |
| August | 25 | 4 |
| September | 14 | 4 |
| October | 12 | 4 |
| November | 5 | 4 |
| December | 5 | 3 |
Reported discharges by wastewater outlet
Wastewater outlets with the most tracked discharge records: 10 of 132, all years. Counts depend on reporting coverage and do not measure legal compliance or harm.
Source: md-mde-overflows. Records cover January 4, 2023 to November 3, 2026.
Show table
| Wastewater outlet | Reported discharges |
|---|---|
| Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place | 11 |
| Valley Street | 10 |
| Oldtown Road | 4 |
| N. Mechanic Street, Franklin Street, Valley Street | 4 |
| WWTP, Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street, Walnut Place | 3 |
| 9 CSO locations | 3 |
| Valley Street, Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Avirett Street | 3 |
| Mill Race, Elizabeth Street, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street | 3 |
| Avirett Street | 3 |
| Mill Race, Oldtown Road, Bedford Street, N. Mechanic Street, Franklin Street, Valley Street, Avirett Street | 3 |
| Other outlets (122) | 137 |
| Outlet not stated | 3 |
How these charts are counted
We count each discharge once. Where a source publishes notices and confirmed reports, we use confirmed reports for an operator's month when available; otherwise we use notices. We combine revisions and exclude duplicate state reports copied by the U.S. Environmental Protection Agency (EPA). Monthly and yearly totals appear separately. Status hours follow this site's rules. Shaded gaps mean missing coverage, not zero discharges.
- md-mde-overflows: records from January 4, 2023 to the latest update