Clean Water Act discharge permit · NPDES ME0100633
SOUTH PORTLAND WWTF, South Portland, ME: NPDES ME0100633 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 20Pollutants under a numeric limit
- 9Pollutants with an effluent exceedance
SOUTH PORTLAND WWTF, held by SOUTH PORTLAND CITY OF, holds NPDES permit ME0100633, which discharges to Fore River. EPA’s file records it issued August 1, 2009 and expiring July 31, 2014. The status and dates are as EPA’s permit file stood when Velarion loaded it (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.
Identity
| Facility as filed | SOUTH PORTLAND WWTF |
|---|---|
| Permittee as filed | SOUTH PORTLAND CITY OF |
| NPDES ID | ME0100633 |
| 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 | August 1, 2009 |
| Expiration date | July 31, 2014 |
| Address | South Portland, ME 04116 |
| Receiving water | Fore River |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Fore River (HUC 010600010402) |
| Program components on file | CSO, POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler MED000220434 |
Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download; cross-program IDs from EPA’s FRS facility-registry crosswalk.
Effluent limits and exceedances
- 24Pollutants on file
- 20Under a numeric limit
- 24With a violation of any kind
- 9With 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 |
|---|---|---|---|---|---|
| pH | 2 | 140 | 108 | September 30, 2023 | |
| Coliform, fecal MF, MFC broth, 44.5 C | 3 | 40 | 22 | August 31, 2019 | 99,999% over the limit |
| Flow, in conduit or thru treatment plant | 3 | 55 | 20 | April 30, 2017 | 38% over the limit |
| BOD, 5-day, 20 deg. C | 11 | 125 | 14 | February 28, 2023 | 82% over the limit |
| Solids, total suspended | 11 | 120 | 9 | June 30, 2018 | 184% over the limit |
| Chlorine, total residual | 3 | 31 | 6 | July 31, 2009 | 2,080% over the limit |
| Solids, settleable | 1 | 22 | 3 | July 31, 2009 | 23,233% over the limit |
| NOEL Static 1Hr 20min Fert. Chronic Arbacia punctulata | 2 | 8 | 2 | September 30, 2011 | 38% over the limit |
| Mercury, total [as Hg] | 2 | 3 | 1 | August 31, 2020 | 25% over the limit |
| Zinc, total [as Zn] | 2 | 38 | 0 | ||
| Copper, total [as Cu] | 0 | 34 | 0 | ||
| Solids, suspended percent removal | 2 | 30 | 0 | ||
| BOD, 5-day, percent removal | 2 | 28 | 0 | ||
| Nitrogen, ammonia total [as N] | 4 | 20 | 0 | ||
| Surface loading rate | 1 | 9 | 0 | ||
| Overflows | 1 | 9 | 0 | ||
| Cyanide, free [amenable to chlorination] | 2 | 7 | 0 | ||
| NOAEL Static Renewal 48Hr Acute Americamysis bahia (formerly Mysidopsis bahia) | 2 | 6 | 0 | ||
| Priority Pollutants | 1 | 6 | 0 | ||
| Di[2-ethylhexyl] phthalate [DEHP] | 2 | 4 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 4 | 0 | ||
| Noel Statre 7Day Chronic Menidia | 0 | 4 | 0 | ||
| Noael Statre 48Hr Acute Menidia | 0 | 4 | 0 | ||
| Analytical Chemistry | 2 | 2 | 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 ME0100633.
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, ME0100633.
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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 ME0100633 there.
Nearby on the register
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- Every permit record in Maine, A to Z
Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.