Clean Water Act discharge permit · NPDES NJ0026905
STAGE II TREATMENT PLANT, Montgomery Twp, NJ: NPDES NJ0026905 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MinorDischarger class
- 14Pollutants under a numeric limit
- 6Pollutants with an effluent exceedance
STAGE II TREATMENT PLANT, held by MONTGOMERY TWP, holds NPDES permit NJ0026905. EPA’s file records it issued April 14, 2016 and expiring June 30, 2021. 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 | STAGE II TREATMENT PLANT |
|---|---|
| Permittee as filed | MONTGOMERY TWP |
| NPDES ID | NJ0026905 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Minor discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 14, 2016 |
| Expiration date | June 30, 2021 |
| Address | Montgomery Twp, NJ 08540 |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Lower Millstone River (HUC 020301050312) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 14Pollutants on file
- 14Under a numeric limit
- 7With a violation of any kind
- 6With 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 |
|---|---|---|---|---|---|
| Chlorine produced oxidants | 4 | 103 | 99 | December 31, 2020 | 289% over the limit |
| Nitrogen, ammonia total [as N] | 8 | 38 | 10 | August 31, 2025 | 300% over the limit |
| BOD, carbonaceous [5 day, 20 C] | 13 | 9 | 9 | July 31, 2025 | 225% over the limit |
| Solids, total dissolved | 4 | 8 | 8 | March 31, 2025 | 48% over the limit |
| Solids, total suspended | 7 | 5 | 4 | December 31, 2024 | 60% over the limit |
| Phosphorus, total [as P] | 4 | 2 | 2 | February 28, 2022 | 75% over the limit |
| pH | 4 | 4 | 0 | ||
| Temperature, water deg. centigrade | 6 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 4 | 0 | 0 | ||
| Oxygen, dissolved [DO] | 2 | 0 | 0 | ||
| Oil & Grease | 2 | 0 | 0 | ||
| Flow, in conduit or thru treatment plant | 2 | 0 | 0 | ||
| E. coli | 2 | 0 | 0 | ||
| IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubia | 1 | 0 | 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
- 0Single-event violations
EPA’s single-event violation file, as loaded, holds no violation for NPDES NJ0026905.
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
One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, NJ0026905.
Start the watch
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- One watershed — $2,990/year
- One state — $4,990/year
- The whole register — $18,000/year
How we handle your data → Privacy
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 NJ0026905 there.
Nearby on the register
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- Every permit record in New Jersey, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.