Clean Water Act discharge permit · NPDES MDL021636
CAMBRIDGE WWTP, Cambridge, MD: NPDES MDL021636 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 0Pollutants under a numeric limit
- 1Pollutants with an effluent exceedance
CAMBRIDGE WWTP, held by CAMBRIDGE, holds NPDES permit MDL021636. EPA’s file records it issued January 1, 2021 and expiring December 31, 2025. The status and dates are as EPA’s permit file stood when Velarion loaded it (September 15, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | CAMBRIDGE WWTP |
|---|---|
| Permittee as filed | CAMBRIDGE |
| NPDES ID | MDL021636 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Associated permit record |
| Discharger class | Minor discharger |
| Facility type | Not a publicly owned treatment works |
| Program | Biosolids |
| Issued | January 1, 2021 |
| Expiration date | December 31, 2025 |
| Address | Cambridge, MD 21613 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Bolingbroke Creek-Choptank River (HUC 020600050502) |
| Other EPA IDs (FRS) | RCRA handler MDD980553374 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 13Pollutants on file
- 0Under a numeric limit
- 13With a violation of any kind
- 1With an effluent exceedance
An effluent exceedance is a discharge monitoring report value over the permit’s numeric limit (EPA’s violation code E90). A violation of any kind also counts a report not filed. Each row is EPA’s own count for that pollutant.
| Pollutant or measure | Limits | Violations, any kind | Effluent exceedances | Latest exceedance | Largest exceedance, as filed |
|---|---|---|---|---|---|
| Arsenic total, dry weight, sludge | 0 | 9 | 1 | June 30, 1995 | 28% over the limit |
| Lead, sludge, total, dry weight [as Pb] | 0 | 20 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 0 | 20 | 0 | ||
| Cadmium, sludge, total, dry weight [as Cd] | 0 | 20 | 0 | ||
| Hydrocarbons, total gas chromatograph | 0 | 12 | 0 | ||
| Arsenic, sludge tot. dry wt [as As] | 0 | 12 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 0 | 12 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 0 | 8 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 0 | 8 | 0 | ||
| Copper, sludge, total, dry weight [as Cu] | 0 | 8 | 0 | ||
| Selenium, sludge, total, dry weight [as Se] | 0 | 6 | 0 | ||
| Molybdenum, sludge, total, dry weight [as Mo] | 0 | 6 | 0 | ||
| Ann. amt sludge disposed by other method | 0 | 1 | 0 |
Cited to the EPA ICIS-NPDES limits and effluent violations files (ECHO download); up to 60 rows shown, most exceedances first.
Inspections, violations and enforcement
- 1Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| January 1, 2019 | PR: Biosolids: Other Management Practice Violation | EP6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not include the inspections, formal enforcement actions and informal enforcement actions files, so this page shows none of them. EPA’s free Detailed Facility Report on ECHO lists this permit’s inspections, enforcement actions and penalties.
Cited to the EPA ICIS-NPDES violation, inspection and enforcement files (ECHO download); up to 50 rows of each shown, newest first.
Watch this permit
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EPA publishes a free Detailed Facility Report for every permit on ECHO: its compliance status quarter by quarter, its inspections, and its enforcement actions and penalties. EPA also sends free notices of new inspections and enforcement actions through ECHO Notify; enter NPDES ID MDL021636 there.
Nearby on the register
- Discharge permits in Cambridge
- Every permit record in Cambridge, A to Z
- Discharge permits in Maryland
- Every permit record in Maryland, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.