Data / Environmental compliance / Water, Sewage and Other Systems / Maryland
Water, Sewage and Other Systems in Maryland: 22 facilities
Updated November 7, 2026. Source: US EPA, Enforcement and Compliance History Online (ECHO).
EPA's ECHO database lists 22 facilities in Water, Sewage and Other Systems (NAICS 2213) in Maryland with a formal enforcement action, penalties of $5,000 or more, three or more quarters in significant noncompliance or a federal case in the five years to November 1, 2026: 58 formal actions, 2 informal actions and $1,723,915 in penalties.
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- Industry
- NAICS 2213, Water, Sewage and Other Systems
- State
- Maryland
- Facilities
- 22
- Formal enforcement actions
- 58
- Informal actions
- 2
- Penalties
- $1,723,915 ($82,528 from federal cases)
- Facilities with three or more quarters in significant noncompliance
- 11
Facilities with the largest penalties
Ranked by penalties of the last five years. Each row links to EPA's facility report.
| Facility | City | State | Formal actions | Penalties | Quarters in significant noncompliance | Latest penalty | Source |
|---|---|---|---|---|---|---|---|
| Patapsco Wastewater Treatment Facility | Baltimore | MD | 19 | $511,600 | 0 | July 30, 2026 | echo.epa.gov |
| Potomac Water Filtration Plant | Potomac | MD | 3 | $464,800 | 11 | June 24, 2026 | echo.epa.gov |
| Back River Wastewater Treatment Facility | Baltimore | MD | 12 | $385,200 | 5 | July 30, 2026 | echo.epa.gov |
| US Army Aberdeen Proving Ground | Aberdeen Proving Ground | MD | 3 | $165,056 | 0 | August 21, 2024 | echo.epa.gov |
| Western Branch Wastewater Treatment Plant | Upper Marlboro | MD | 1 | $44,360 | 0 | January 5, 2022 | echo.epa.gov |
| Little Patuxent Water Reclamation Plant | Savage | MD | 1 | $42,318 | 1 | August 22, 2025 | echo.epa.gov |
| Freedom District Water Treatment Plant | Sykesville | MD | 1 | $34,875 | 7 | July 12, 2023 | echo.epa.gov |
| Hampstead WWTP | Hampstead | MD | 4 | $26,777 | 2 | April 15, 2026 | echo.epa.gov |
| Dorsey Run Advanced WWTP | Jessup | MD | 1 | $20,000 | 0 | March 25, 2025 | echo.epa.gov |
| Mattawoman Wastewater Treatment Plant | La Plata | MD | 4 | $17,600 | 2 | November 18, 2023 | echo.epa.gov |
| City of Frederick Wastewater Treatment Plant-2007 | Frederick | MD | 4 | $9,686 | 1 | September 15, 2023 | echo.epa.gov |
| Hagerstown WPCF | Hagerstown | MD | 1 | $1,643 | 0 | August 1, 2024 | echo.epa.gov |
| WSSC, Piscataway WWTP | Accokeek | MD | 2 | $0 | 5 | echo.epa.gov | |
| Maryland City Wastewater | Laurel | MD | 1 | $0 | 0 | echo.epa.gov | |
| Taneytown WWTP | Taneytown | MD | 1 | $0 | 0 | echo.epa.gov | |
| Cumberland Wastewater Treatment Plant | Cumberland | MD | 0 | $0 | 11 | echo.epa.gov | |
| Montebello Filtration Plant E Building | Baltimore | MD | 0 | $0 | 11 | echo.epa.gov | |
| City of Salisbury, WWTP | Salisbury | MD | 0 | $0 | 6 | echo.epa.gov | |
| Anne Arundel County Roads, Crownsville | Annapolis | MD | 0 | $0 | 4 | echo.epa.gov | |
| Broadneck Water Reclamation Facility | Annapolis | MD | 0 | $0 | 4 | echo.epa.gov | |
| Anne Arundel Co., No. Dist. Yard | Glen Burnie | MD | 0 | $0 | 3 | echo.epa.gov | |
| New Design Road Water Treatment Plant | Tuscarora | MD | 0 | $0 | 3 | echo.epa.gov |
By program
| Program | Facilities | Formal actions | Informal actions | Penalties | Facilities with quarters in significant noncompliance |
|---|---|---|---|---|---|
| Clean Air Act | 15 | 1 | 2 | $0 | 2 |
| Clean Water Act | 22 | 52 | 0 | $1,558,859 | 13 |
| Hazardous waste (RCRA) | 10 | 1 | 0 | $82,528 | 0 |
| Drinking water (SDWA) | 1 | 0 | 0 | $0 | 0 |
Public domain (U.S. government work). Counts and penalties cover the five years to November 1, 2026 as ECHO publishes them in its exporter and case downloads, drawn from EPA's air, water, hazardous waste and drinking water systems and from the states that report to them. Records can be incomplete, late or corrected after this page was read. A federal case penalty that names several facilities is shown on each of them and counted once in industry, state and national totals. Each row links to EPA's own report. A quarter in significant noncompliance is EPA's term for a serious violation status in a program, not a finding of fault beyond that status. This page uses US EPA data and is not endorsed or certified by the US EPA. Free to reuse with credit to SpecStream under CC BY 4.0. Spot a wrong value? Write to [email protected] with the link to this page.