NPDES CT0101150 · Clean Water Act
PORTLAND WPCF, Portland, CT: NPDES CT0101150 discharge permit, effluent exceedances, inspections, penalties
PORTLAND WPCF, Portland, Connecticut: Individual permit CT0101150; Publicly owned treatment works; Administratively continued; issued September 22, 2017, term to September 30, 2022, by CT DEP; discharges to CONNECTICUT RIVER.
38 of the 50 pollutants listed for NPDES CT0101150 have no violation or effluent exceedance.
- BOD, 5-day, percent removal: 1 limit, 34 violations of any kind, 32 effluent exceedances, latest April 30, 2015, largest 200% over the limit.
- BOD, 5-day, 20 deg. C: 5 limits, 25 violations of any kind, 25 effluent exceedances, latest November 30, 2001, largest 487% over the limit.
- Chlorine, total residual: 2 limits, 18 violations of any kind, 18 effluent exceedances, latest September 30, 2001, largest 180% over the limit.
- Coliform, fecal general: 0 limits, 18 violations of any kind, 18 effluent exceedances, latest August 31, 2016, largest 2,250% over the limit.
- Solids, suspended percent removal: 1 limit, 18 violations of any kind, 17 effluent exceedances, latest February 28, 2026, largest 180% over the limit.
- pH: 2 limits, 12 violations of any kind, 12 effluent exceedances, latest April 30, 2009.
- Solids, total suspended: 5 limits, 6 violations of any kind, 6 effluent exceedances, latest February 28, 2026, largest 48% over the limit.
- Enterococci: 2 limits, 6 violations of any kind, 6 effluent exceedances, latest June 30, 2025, largest 141% over the limit.
- Flow, in conduit or thru treatment plant: 0 limits, 4 violations of any kind, 4 effluent exceedances, latest February 28, 1999, largest 1,417% over the limit.
- Ultraviolet light dosage: 1 limit, 1 violation of any kind, 1 effluent exceedance, latest June 30, 2015, largest 100% over the limit.
- Nitrogen, ammonia total [as N]: 2 limits, 1 violation of any kind.
- BOD, carbonaceous [5 day, 5 C]: 0 limits, 1 violation of any kind.
- Phosphorus, total [as P]: 3 limits.
- Flow rate: 2 limits.
- Nitrogen, nitrite total [as N]: 2 limits.
- Nitrogen, nitrate total [as N]: 2 limits.
- Cyanide, total [as CN]: 2 limits.
- Cyanide, free [amenable to chlorination]: 2 limits.
- Arsenic, total [as As]: 2 limits.
- Beryllium, total [as Be]: 2 limits.
- Cadmium, total [as Cd]: 2 limits.
- Chromium, hexavalent [as Cr]: 2 limits.
- Chromium, total [as Cr]: 2 limits.
- Copper, total [as Cu]: 2 limits.
- Iron, total [as Fe]: 2 limits.
- Lead, total [as Pb]: 2 limits.
- Thallium, total [as Tl]: 2 limits.
- Nickel, total [as Ni]: 2 limits.
- Silver, total [as Ag]: 2 limits.
- Zinc, total [as Zn]: 2 limits.
- Antimony, total [as Sb]: 2 limits.
- Aluminum, total [as Al]: 2 limits.
- Selenium, total [as Se]: 2 limits.
- Phenols: 2 limits.
- Mercury, total [as Hg]: 2 limits.
- NOAEL Static 48Hr Acute D. pulex: 2 limits.
- NOAEL Static 48Hr Acute Pimephales promelas: 2 limits.
- Polychlorinated biphenyls [PCBs]: 1 limit.
- Arsenic, sludge tot. dry wt [as As]: 1 limit.
- Beryllium, sludge, tot. dry wt [as Be]: 1 limit.
- Solids, total, percent: 1 limit.
- Solids, fixed, % of total solids: 1 limit.
- Solids, volatile % of total solids: 1 limit.
- Zinc, sludge, total, dry weight [as Zn]: 1 limit.
- Lead, sludge, total, dry weight [as Pb]: 1 limit.
- Nickel, sludge, total, dry weight [as Ni]: 1 limit.
- Mercury, sludge, total, dry weight [as Hg]: 1 limit.
- Chromium, sludge, total, dry weight [as Cr]: 1 limit.
- Copper, sludge, total, dry weight [as Cu]: 1 limit.
- Cadmium, sludge, total, dry weight [as Cd]: 1 limit.
- May 15, 2025: Monitoring Violations - Invalid/Unrepresentative Sample (ST6).
- September 28, 2022: Management Practice Violations - Improper Operation and Maintenance (ST6).
- September 28, 2022: Monitoring Violations - Invalid/Unrepresentative Sample (ST6).
- April 5, 2019: Reporting Violations - Improper/ Incorrect Reporting (ST6).
- June 7, 2017: Monitoring Violations - No Flow Measurement Device (ST6).
Connecticut holds 84 Publicly owned treatment works coverages of this permit type in EPA’s file; 82 were issued before CT0101150. PORTLAND WPCF holds 2 permits in Connecticut.
Other permits held by PORTLAND WPCF
- PORTLAND WPCF, Portland: CTL101150, issued 2021-01-01
Coverages issued nearest CT0101150
- 2016-02-03: GLASTONBURY WPCF, Glastonbury: CT0100226
- 2016-09-29: NEW LONDON WPCF, New London: CT0100382, held by NEW LONDON STP
- 2017-05-17: BEACON FALLS WPCF, Beacon Falls: CT0101061
- 2017-06-05: CANTON WPCF, Canton: CT0100072
- 2017-09-06: DEEP RIVER WPCF, Deep River: CT0101745, held by DEEP RIVER TOWN OF
- 2020-11-02: NORWICH WPCF, Norwich: CT0100412
PORTLAND WPCF among its neighbors
11 discharge permits are in the Mill Creek-Connecticut River subwatershed (HUC 010802050702); CT0101150 is one. Its county: 60, 4 major; CT0101150 is major permit.
Other permits in the Mill Creek-Connecticut River subwatershed (HUC 010802050702)
- B & B PETROLEUM, Portland: CTR050391, minor, term to 2030-09-30
- EAST HAMPTON WPCA, East Hampton: CT0024694, major, term to 2019-04-30
- EAST HAMPTON WPCA, East Hampton: CTL024694, minor, term to 2025-12-31
- HADDAM TRANSFER STATION, Haddam: CTGSI1487, minor, term to 2021-09-30
- KLEEN ENERGY, Middletown: CTR101754
- MIDDLETOWN, Middletown: CTL100323, minor, term to 2025-12-31
- MIDDLETOWN POWER LLC, Middletown: CT0003883, major, term to 2006-03-18
- PORTLAND WPCF, Portland: CTL101150, minor, term to 2025-12-31
- PRATT & WHITNEY DIVISION UTC, Middletown, Town Of: CT0001406, minor, term to 2011-07-31
- RTX/PRATT & WHITNEY, Middletown: CTR050168, minor, term to 2030-09-30
Identity
| Facility | PORTLAND WPCF |
|---|---|
| Permittee | PORTLAND WPCF |
| NPDES ID | CT0101150 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Major |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 22, 2017 |
| Expires | September 30, 2022 |
| Agency | CT DEP |
| Address | Portland, CT 06480 |
| Receiving water | CONNECTICUT RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Mill Creek-Connecticut River (HUC 010802050702) |
NPDES CT0101150: effluent limits and exceedances
PORTLAND WPCF (NPDES CT0101150): 50 pollutants on file, 47 limited; 12 with a violation of any kind, 10 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| BOD, 5-day, percent removal | 1 | 34 | 32 | April 30, 2015 | 200% over the limit |
| BOD, 5-day, 20 deg. C | 5 | 25 | 25 | November 30, 2001 | 487% over the limit |
| Chlorine, total residual | 2 | 18 | 18 | September 30, 2001 | 180% over the limit |
| Coliform, fecal general | 0 | 18 | 18 | August 31, 2016 | 2,250% over the limit |
| Solids, suspended percent removal | 1 | 18 | 17 | February 28, 2026 | 180% over the limit |
| pH | 2 | 12 | 12 | April 30, 2009 | |
| Solids, total suspended | 5 | 6 | 6 | February 28, 2026 | 48% over the limit |
| Enterococci | 2 | 6 | 6 | June 30, 2025 | 141% over the limit |
| Flow, in conduit or thru treatment plant | 0 | 4 | 4 | February 28, 1999 | 1,417% over the limit |
| Ultraviolet light dosage | 1 | 1 | 1 | June 30, 2015 | 100% over the limit |
| Nitrogen, ammonia total [as N] | 2 | 1 | 0 | ||
| BOD, carbonaceous [5 day, 5 C] | 0 | 1 | 0 | ||
| Phosphorus, total [as P] | 3 | 0 | 0 | ||
| Flow rate | 2 | 0 | 0 | ||
| Nitrogen, nitrite total [as N] | 2 | 0 | 0 | ||
| Nitrogen, nitrate total [as N] | 2 | 0 | 0 | ||
| Cyanide, total [as CN] | 2 | 0 | 0 | ||
| Cyanide, free [amenable to chlorination] | 2 | 0 | 0 | ||
| Arsenic, total [as As] | 2 | 0 | 0 | ||
| Beryllium, total [as Be] | 2 | 0 | 0 | ||
| Cadmium, total [as Cd] | 2 | 0 | 0 | ||
| Chromium, hexavalent [as Cr] | 2 | 0 | 0 | ||
| Chromium, total [as Cr] | 2 | 0 | 0 | ||
| Copper, total [as Cu] | 2 | 0 | 0 | ||
| Iron, total [as Fe] | 2 | 0 | 0 | ||
| Lead, total [as Pb] | 2 | 0 | 0 | ||
| Thallium, total [as Tl] | 2 | 0 | 0 | ||
| Nickel, total [as Ni] | 2 | 0 | 0 | ||
| Silver, total [as Ag] | 2 | 0 | 0 | ||
| Zinc, total [as Zn] | 2 | 0 | 0 | ||
| Antimony, total [as Sb] | 2 | 0 | 0 | ||
| Aluminum, total [as Al] | 2 | 0 | 0 | ||
| Selenium, total [as Se] | 2 | 0 | 0 | ||
| Phenols | 2 | 0 | 0 | ||
| Mercury, total [as Hg] | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute D. pulex | 2 | 0 | 0 | ||
| NOAEL Static 48Hr Acute Pimephales promelas | 2 | 0 | 0 | ||
| Polychlorinated biphenyls [PCBs] | 1 | 0 | 0 | ||
| Arsenic, sludge tot. dry wt [as As] | 1 | 0 | 0 | ||
| Beryllium, sludge, tot. dry wt [as Be] | 1 | 0 | 0 | ||
| Solids, total, percent | 1 | 0 | 0 | ||
| Solids, fixed, % of total solids | 1 | 0 | 0 | ||
| Solids, volatile % of total solids | 1 | 0 | 0 | ||
| Zinc, sludge, total, dry weight [as Zn] | 1 | 0 | 0 | ||
| Lead, sludge, total, dry weight [as Pb] | 1 | 0 | 0 | ||
| Nickel, sludge, total, dry weight [as Ni] | 1 | 0 | 0 | ||
| Mercury, sludge, total, dry weight [as Hg] | 1 | 0 | 0 | ||
| Chromium, sludge, total, dry weight [as Cr] | 1 | 0 | 0 | ||
| Copper, sludge, total, dry weight [as Cu] | 1 | 0 | 0 | ||
| Cadmium, sludge, total, dry weight [as Cd] | 1 | 0 | 0 |
NPDES CT0101150: inspections, violations and enforcement
NPDES CT0101150: 5 single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| May 15, 2025 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| September 28, 2022 | Management Practice Violations - Improper Operation and Maintenance | ST6 |
| September 28, 2022 | Monitoring Violations - Invalid/Unrepresentative Sample | ST6 |
| April 5, 2019 | Reporting Violations - Improper/ Incorrect Reporting | ST6 |
| June 7, 2017 | Monitoring Violations - No Flow Measurement Device | ST6 |
NPDES CT0101150 (PORTLAND WPCF): no inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES CT0101150
NPDES CT0101150: one email when its EPA record changes — $99/month.
Permits near NPDES CT0101150
NPDES CT0101150: 50 pollutant rows, 5 dated events; ICIS-NPDES download, loaded September 15, 2026.