Clean Water Act discharge permit · NPDES MA0101711
BILLERICA W W T P, Billerica, MA: NPDES MA0101711 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 21Pollutants under a numeric limit
- 17Pollutants with an effluent exceedance
BILLERICA W W T P holds NPDES permit MA0101711, which discharges to Concord River. EPA’s file records it issued April 23, 2014 and expiring June 30, 2019. 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 | BILLERICA W W T P |
|---|---|
| Permittee as filed | BILLERICA W W T P |
| NPDES ID | MA0101711 |
| Permit status | Administratively continued (past its expiration date and still in force until reissued) |
| Permit type | Individual permit |
| Discharger class | Major discharger |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | April 23, 2014 |
| Expiration date | June 30, 2019 |
| Address | Billerica, MA 01821 |
| Receiving water | CONCORD RIVER |
| Subwatershed | Mill Brook-Concord River (HUC 010700050206) |
| Other EPA IDs (FRS) | RCRA handler MAR000525741 |
Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 55Pollutants on file
- 21Under a numeric limit
- 49With a violation of any kind
- 17With 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 |
|---|---|---|---|---|---|
| Aluminum, total [as Al] | 7 | 98 | 92 | May 31, 2026 | 1,693% over the limit |
| Nitrogen, ammonia total [as N] | 7 | 42 | 25 | May 31, 2026 | 210% over the limit |
| Phosphorus, total [as P] | 6 | 37 | 23 | December 31, 2015 | 217% over the limit |
| Solids, total suspended | 7 | 120 | 12 | April 30, 2010 | 615% over the limit |
| LC50 Static 48Hr Acute Ceriodaphnia dubia | 1 | 20 | 12 | June 30, 2026 | 89% over the limit |
| BOD, 5-day, 20 deg. C | 7 | 133 | 9 | September 30, 2011 | 254% over the limit |
| pH | 2 | 29 | 8 | April 30, 2015 | |
| Coliform, total general | 0 | 22 | 8 | June 30, 2010 | 99,999% over the limit |
| BOD, 5-day, percent removal | 1 | 13 | 6 | March 31, 2010 | 33% over the limit |
| Flow, in conduit or thru treatment plant | 3 | 23 | 5 | February 29, 2024 | 10% over the limit |
| NOEL Static Renewal 7Day Chronic Ceriodaphnia dubia | 1 | 14 | 5 | June 30, 2023 | 58% over the limit |
| Oxygen, dissolved [DO] | 1 | 12 | 5 | July 31, 2005 | 22% over the limit |
| NOEC Static Renewal 7Day Chronic Ceriodaphnia dubia | 0 | 3 | 3 | June 30, 2026 | 79% over the limit |
| Chlorine, total residual | 2 | 20 | 2 | July 31, 2014 | 427% over the limit |
| LC50 Static 48Hr Acute Pimephales promelas | 0 | 12 | 1 | December 31, 2007 | 50% over the limit |
| Solids, suspended percent removal | 1 | 10 | 1 | December 31, 2004 | 67% over the limit |
| E. coli, colony forming units [CFU] | 4 | 3 | 1 | March 31, 2026 | 194% over the limit |
| Noel Statre 7Day Chronic Pimephales | 0 | 10 | 0 | ||
| Copper, total [as Cu] | 3 | 4 | 0 | ||
| Phosphate, ortho [as PO4] | 0 | 2 | 0 | ||
| 1H,1H,2H,2H-Perfluorooctane sulfonic acid (6:2 FTS) | 0 | 2 | 0 | ||
| Fluorine, adsorbable organic | 0 | 2 | 0 | ||
| Perfluorooctanesulfonamide (PFOSA) | 0 | 1 | 0 | ||
| Perfluorotridecanoic acid (PFTrDA) | 0 | 1 | 0 | ||
| Perfluorotetradecanoic acid (PFTeDA) | 0 | 1 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoethanol (NEtFOSE) | 0 | 1 | 0 | ||
| N-methyl perfluorooctanesulfonamidoethanol (NMeFOSE) | 0 | 1 | 0 | ||
| N-ethyl perfluorooctanesulfonamidoacetic acid (NEtFOSAA) | 0 | 1 | 0 | ||
| N-methyl perfluorooctanesulfonamidoacetic acid (NMeFOSAA) | 0 | 1 | 0 | ||
| Perfluorobutanesulfonic acid (PFBS) | 0 | 1 | 0 | ||
| Perfluorodecanesulfonic acid (PFDS) | 0 | 1 | 0 | ||
| Perfluoroheptanesulfonic acid (PFHpS) | 0 | 1 | 0 | ||
| 1H,1H,2H,2H-Perfluorohexane sulfonic acid (4:2 FTS) | 0 | 1 | 0 | ||
| 1H,1H, 2H, 2H-Perfluorodecane sulfonic acid (8:2 FTS) | 0 | 1 | 0 | ||
| Perfluorononanesulfonic acid (PFNS) | 0 | 1 | 0 | ||
| Hexafluoropropylene oxide dimer acid (HFPO-DA) | 0 | 1 | 0 | ||
| Nonafluoro-3,6-dioxaheptanoic acid (NFDHA) | 0 | 1 | 0 | ||
| Perfluoro(2-ethoxyethane)sulfonic acid (PFEESA) | 0 | 1 | 0 | ||
| Perfluorododecanesulfonic acid (PFDoS) | 0 | 1 | 0 | ||
| 4,8-Dioxa-3H-perfluorononanoic acid (ADONA) | 0 | 1 | 0 | ||
| N-methyl perfluorooctanesulfonamide (NMeFOSA) | 0 | 1 | 0 | ||
| N-ethyl perfluorooctanesulfonamide (NEtFOSA) | 0 | 1 | 0 | ||
| 3-Perfluoropropyl propanoic acid (3:3 FTCA) | 0 | 1 | 0 | ||
| Perfluoro-3-methoxypropanoic acid (PFMPA) | 0 | 1 | 0 | ||
| 9-Chlorohexadecafluoro-3-oxanonane-1-sulfonic acid (9Cl-PF3ONS) | 0 | 1 | 0 | ||
| 11-Chloroeicosafluoro-3-oxaundecane-1-sulfonic acid (11Cl-PF3OUdS) | 0 | 1 | 0 | ||
| 3-Perfluoroheptyl propanoic acid (7:3 FTCA) | 0 | 1 | 0 | ||
| Perfluoro-4-methoxybutanoic acid (PFMBA) | 0 | 1 | 0 | ||
| 2H,2H,3H,3H-Perfluorooctanoic acid (5:3 FTCA) | 0 | 1 | 0 | ||
| Ammonia nitrogen, total, [as N] 30 day | 1 | 0 | 0 | ||
| Hardness, total [as CaCO3] | 1 | 0 | 0 | ||
| Cadmium, total [as Cd] | 1 | 0 | 0 | ||
| Lead, total [as Pb] | 1 | 0 | 0 | ||
| Nickel, total [as Ni] | 1 | 0 | 0 | ||
| Zinc, total [as Zn] | 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 MA0101711.
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.
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Nearby on the register
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- Every permit record in Massachusetts, A to Z
Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.