NPDES PR0023710 · Clean Water Act
PRASA ARECIBO WWTP, Arecibo, PR: NPDES PR0023710 discharge permit, effluent exceedances, inspections, penalties
PRASA ARECIBO WWTP, Arecibo, Puerto Rico: Individual permit PR0023710, held by PRASA ARECIBO RWWTP; Publicly owned treatment works; Administratively continued; issued September 3, 2002, term to October 31, 2007; discharges to ATLANTIC OCEAN.
- Chlorine, total residual: 1 limit, 167 violations of any kind, 156 effluent exceedances, latest May 31, 2023, largest 99,999% over the limit.
- Coliform, fecal general: 2 limits, 158 violations of any kind, 107 effluent exceedances, latest March 31, 2026, largest 99,999% over the limit.
- Coliform, fecal - % samples exceeding limit: 1 limit, 217 violations of any kind, 75 effluent exceedances, latest March 31, 2026, largest 400% over the limit.
- Nitrite + Nitrate total [as N]: 0 limits, 56 violations of any kind, 46 effluent exceedances, latest October 31, 2002, largest 3,900% over the limit.
- Enterococci - % of upper confidence limit: 0 limits, 59 violations of any kind, 30 effluent exceedances, latest March 31, 2026, largest 33% over the limit.
- Solids, total suspended: 6 limits, 184 violations of any kind, 29 effluent exceedances, latest February 28, 2025, largest 900% over the limit.
- BOD, 5-day, percent removal: 1 limit, 45 violations of any kind, 25 effluent exceedances, latest January 31, 2026, largest 43% over the limit.
- Enterococci: 0 limits, 28 violations of any kind, 25 effluent exceedances, latest March 31, 2026, largest 99,999% over the limit.
- Coliform, total general: 1 limit, 43 violations of any kind, 24 effluent exceedances, latest October 31, 2015, largest 99,999% over the limit.
- Solids, suspended percent removal: 1 limit, 42 violations of any kind, 23 effluent exceedances, latest May 31, 2024, largest 100% over the limit.
- Sulfide-hydrogen sulfide [undissociated]: 1 limit, 39 violations of any kind, 19 effluent exceedances, latest December 31, 2025, largest 1,980% over the limit.
- Sulfide, total [as S]: 0 limits, 24 violations of any kind, 13 effluent exceedances, latest December 31, 1998, largest 1,150% over the limit.
- Flow, in conduit or thru treatment plant: 4 limits, 44 violations of any kind, 11 effluent exceedances, latest October 31, 2005, largest 91% over the limit.
- Turbidity: 1 limit, 30 violations of any kind, 11 effluent exceedances, latest December 31, 2025.
- pH: 2 limits, 40 violations of any kind, 8 effluent exceedances, latest September 30, 2012.
- BOD, 5-day, 20 deg. C: 6 limits, 176 violations of any kind, 6 effluent exceedances, latest June 30, 2018, largest 615% over the limit.
- Surfactants [MBAS]: 3 limits, 23 violations of any kind, 4 effluent exceedances, latest September 30, 2013, largest 551% over the limit.
- Zinc, total [as Zn]: 1 limit, 22 violations of any kind, 4 effluent exceedances, latest May 31, 2023, largest 83% over the limit.
- Fluoride, total [as F]: 2 limits, 22 violations of any kind, 3 effluent exceedances, latest October 31, 1997, largest 169% over the limit.
- Nickel, total [as Ni]: 1 limit, 30 violations of any kind, 2 effluent exceedances, latest July 31, 2025, largest 191% over the limit.
- Lead, total [as Pb]: 1 limit, 21 violations of any kind, 2 effluent exceedances, latest July 31, 2003, largest 737% over the limit.
- Cyanide, free available: 0 limits, 8 violations of any kind, 2 effluent exceedances, latest September 30, 2021, largest 198% over the limit.
- Thallium, total [as Tl]: 2 limits, 30 violations of any kind, 1 effluent exceedance, latest March 31, 2009, largest 130% over the limit.
- Silver, total [as Ag]: 1 limit, 28 violations of any kind, 1 effluent exceedance, latest February 29, 2024, largest 21% over the limit.
- Copper, total [as Cu]: 2 limits, 25 violations of any kind, 1 effluent exceedance, latest June 30, 2019, largest 7% over the limit.
- Manganese, total [as Mn]: 2 limits, 20 violations of any kind, 1 effluent exceedance, latest May 31, 1999, largest 88% over the limit.
- Temperature, water deg. centigrade: 1 limit, 20 violations of any kind, 1 effluent exceedance, latest June 30, 2016, largest 11% over the limit.
- Cyanide, total [as CN]: 2 limits, 18 violations of any kind, 1 effluent exceedance, latest November 30, 2006, largest 8% over the limit.
- Phenolics, total recoverable: 2 limits, 18 violations of any kind, 1 effluent exceedance, latest December 31, 2000, largest 99,999% over the limit.
- Antimony, total [as Sb]: 1 limit, 47 violations of any kind.
- Chromium, total [as Cr]: 1 limit, 45 violations of any kind.
- Boron, total [as B]: 1 limit, 44 violations of any kind.
- Oil & Grease: 2 limits, 35 violations of any kind.
- Chromium, hexavalent [as Cr]: 1 limit, 33 violations of any kind.
- Selenium, total [as Se]: 2 limits, 24 violations of any kind.
- Mercury, total [as Hg]: 1 limit, 24 violations of any kind.
- Arsenic, total [as As]: 1 limit, 23 violations of any kind.
- Barium, total [as Ba]: 2 limits, 22 violations of any kind.
- Cadmium, total [as Cd]: 1 limit, 21 violations of any kind.
- Color [PT-CO units]: 1 limit, 19 violations of any kind.
- Oxygen, dissolved [DO]: 1 limit, 19 violations of any kind.
- Nitrogen, Kjeldahl, total [as N]: 0 limits, 17 violations of any kind.
- Solids, settleable: 1 limit, 16 violations of any kind.
- Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia): 0 limits, 15 violations of any kind.
- NOAEL Static 48Hr Acute Cyprinodon variegatus: 0 limits, 15 violations of any kind.
- % Effect Static Chronic Arbacia punctulata: 0 limits, 14 violations of any kind.
- NOEC Sub-Lethal Static Renewal 7 Day Chronic Cyprinodeon variegatus: 0 limits, 14 violations of any kind.
- % Growth Reduction Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia): 0 limits, 14 violations of any kind.
- Nitrogen, total [as N]: 1 limit, 8 violations of any kind.
- 2-Methyl-4,6-dinitrophenol: 0 limits, 2 violations of any kind.
- 2-Chlorophenol: 0 limits, 2 violations of any kind.
- 2,4-Dichlorophenol: 0 limits, 2 violations of any kind.
- 2,4,6-Trichlorophenol: 0 limits, 2 violations of any kind.
- Pentachlorophenol: 0 limits, 2 violations of any kind.
- October 30, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- October 26, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- October 19, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- October 16, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- October 14, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- September 29, 2026: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- September 8, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- September 8, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- August 24, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- August 20, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- August 20, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- August 6, 2026: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- July 20, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- July 6, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- June 30, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- June 12, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- May 29, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- May 26, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- May 26, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- May 26, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- May 22, 2026: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- May 21, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- May 16, 2026: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- April 28, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- April 16, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- April 15, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- April 14, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- April 7, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- February 23, 2026: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- February 17, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- February 12, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- February 11, 2026: PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] (EP6).
- February 5, 2026: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- February 2, 2026: Evaluation (E).
- January 20, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- January 18, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- January 13, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- January 12, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- January 7, 2026: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- December 20, 2025: PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] (EP6).
- December 14, 2025: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- November 21, 2025: PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] (EP6).
- November 18, 2025: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- November 18, 2025: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- November 15, 2025: Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- October 28, 2025: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- October 24, 2025: Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment (EP6).
- October 14, 2025: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- October 14, 2025: Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
- October 3, 2025: Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment (EP6).
- September 15, 2025: Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment (EP6).
Puerto Rico holds 34 Publicly owned treatment works coverages of this permit type in EPA’s file; 3 were issued before PR0023710. PRASA ARECIBO RWWTP holds 2 permits in Puerto Rico.
Other permits held by PRASA ARECIBO RWWTP
- PRASA ARECIBO RWWTP, Santurce: PRL023710, issued 2021-01-01
Coverages issued nearest PR0023710
- 1987-06-30: PRASA EL TORITO, Cayey: PR0023779, held by PRASA- JARDINES DEL TORITO
- 1992-05-04: PRASA HUMACAO WWTP, Bo. Rio Abajo: PR0025399
- 2001-12-26: PRASA SAN LORENZO WWTP, San Lorenzo: PR0020834, held by PRASA SAN LORENZO
- 2003-02-19: PRASA AGUADILLA WWTP, Aguadilla: PR0023736, held by PRASA AGUADILLA RWWTP
- 2003-09-08: PRASA SABANA GRANDE WWTP, Sabana Grande: PR0025542, held by PRASA SABANA GRANDE STP
- 2004-09-29: PRASA BARCELONETA WWTP, Barceloneta: PR0021237, held by PRASA BARCELONETA
- 2006-09-28: PRASA PONCE WWTP, Ponce: PR0021563, held by PRASA PONCE STP
- 2010-12-17: PRASA CAROLINA WWTP, San Juan: PR0023752, held by PRASA CAROLINA RWWTP
PRASA ARECIBO WWTP among its neighbors
Its county: 14, 1 major; PR0023710 is major permit.
Other permits in the county
- ARECIBO MUNICIPAL SOLID WASTE LANDFILL, Arecibo: PRR053153, minor, term to 2020-06-03
- CEMEX CONCRETOS - ARECIBO, Arecibo: PRR05BM05
- EATON INTELLIGENT POWER LIMITED, Arecibo: PRR053140, minor, term to 2020-06-03
- FLOOD CONTROL RIO GRANDE ARECIB, Arecibo: PRR10B847
- MONDERNIZATION OF TRINA PADILLA DE SANZ, Arecibo: PRR10BF32
- PASTELERIA LOS CIDRINES INC., Arecibo: PRNOE3259, minor, term to 2026-01-04
- PRASA AIBONITO WTP, Arecibo: PR0022489, minor, term to 2019-06-30
- PRASA ARECIBO RWWTP, Santurce: PRL023710, minor, term to 2025-12-31
- PRASA ARECIBO WTP, Arecibo: PR0024210, minor, term to 2021-01-31
- RESIDENCIAL LA MESETA, Arecibo: PRR10BB56
Identity
| Facility | PRASA ARECIBO WWTP |
|---|---|
| Permittee | PRASA ARECIBO RWWTP |
| NPDES ID | PR0023710 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Major |
| Facility type | Publicly owned treatment works |
| Program | Publicly owned treatment works |
| Issued | September 3, 2002 |
| Expires | October 31, 2007 |
| Address | Arecibo, PR 00612 |
| Receiving water | ATLANTIC OCEAN |
| Program components on file | POTW, Pretreatment |
| SIC | 4952 – Sewerage Systems |
| Other EPA IDs (FRS) | RCRA handler PRD980534507 |
NPDES PR0023710: effluent limits and exceedances
PRASA ARECIBO WWTP (NPDES PR0023710): 54 pollutants on file, 38 limited; 54 with a violation of any kind, 29 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Chlorine, total residual | 1 | 167 | 156 | May 31, 2023 | 99,999% over the limit |
| Coliform, fecal general | 2 | 158 | 107 | March 31, 2026 | 99,999% over the limit |
| Coliform, fecal - % samples exceeding limit | 1 | 217 | 75 | March 31, 2026 | 400% over the limit |
| Nitrite + Nitrate total [as N] | 0 | 56 | 46 | October 31, 2002 | 3,900% over the limit |
| Enterococci - % of upper confidence limit | 0 | 59 | 30 | March 31, 2026 | 33% over the limit |
| Solids, total suspended | 6 | 184 | 29 | February 28, 2025 | 900% over the limit |
| BOD, 5-day, percent removal | 1 | 45 | 25 | January 31, 2026 | 43% over the limit |
| Enterococci | 0 | 28 | 25 | March 31, 2026 | 99,999% over the limit |
| Coliform, total general | 1 | 43 | 24 | October 31, 2015 | 99,999% over the limit |
| Solids, suspended percent removal | 1 | 42 | 23 | May 31, 2024 | 100% over the limit |
| Sulfide-hydrogen sulfide [undissociated] | 1 | 39 | 19 | December 31, 2025 | 1,980% over the limit |
| Sulfide, total [as S] | 0 | 24 | 13 | December 31, 1998 | 1,150% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 44 | 11 | October 31, 2005 | 91% over the limit |
| Turbidity | 1 | 30 | 11 | December 31, 2025 | |
| pH | 2 | 40 | 8 | September 30, 2012 | |
| BOD, 5-day, 20 deg. C | 6 | 176 | 6 | June 30, 2018 | 615% over the limit |
| Surfactants [MBAS] | 3 | 23 | 4 | September 30, 2013 | 551% over the limit |
| Zinc, total [as Zn] | 1 | 22 | 4 | May 31, 2023 | 83% over the limit |
| Fluoride, total [as F] | 2 | 22 | 3 | October 31, 1997 | 169% over the limit |
| Nickel, total [as Ni] | 1 | 30 | 2 | July 31, 2025 | 191% over the limit |
| Lead, total [as Pb] | 1 | 21 | 2 | July 31, 2003 | 737% over the limit |
| Cyanide, free available | 0 | 8 | 2 | September 30, 2021 | 198% over the limit |
| Thallium, total [as Tl] | 2 | 30 | 1 | March 31, 2009 | 130% over the limit |
| Silver, total [as Ag] | 1 | 28 | 1 | February 29, 2024 | 21% over the limit |
| Copper, total [as Cu] | 2 | 25 | 1 | June 30, 2019 | 7% over the limit |
| Manganese, total [as Mn] | 2 | 20 | 1 | May 31, 1999 | 88% over the limit |
| Temperature, water deg. centigrade | 1 | 20 | 1 | June 30, 2016 | 11% over the limit |
| Cyanide, total [as CN] | 2 | 18 | 1 | November 30, 2006 | 8% over the limit |
| Phenolics, total recoverable | 2 | 18 | 1 | December 31, 2000 | 99,999% over the limit |
| Antimony, total [as Sb] | 1 | 47 | 0 | ||
| Chromium, total [as Cr] | 1 | 45 | 0 | ||
| Boron, total [as B] | 1 | 44 | 0 | ||
| Oil & Grease | 2 | 35 | 0 | ||
| Chromium, hexavalent [as Cr] | 1 | 33 | 0 | ||
| Selenium, total [as Se] | 2 | 24 | 0 | ||
| Mercury, total [as Hg] | 1 | 24 | 0 | ||
| Arsenic, total [as As] | 1 | 23 | 0 | ||
| Barium, total [as Ba] | 2 | 22 | 0 | ||
| Cadmium, total [as Cd] | 1 | 21 | 0 | ||
| Color [PT-CO units] | 1 | 19 | 0 | ||
| Oxygen, dissolved [DO] | 1 | 19 | 0 | ||
| Nitrogen, Kjeldahl, total [as N] | 0 | 17 | 0 | ||
| Solids, settleable | 1 | 16 | 0 | ||
| Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia) | 0 | 15 | 0 | ||
| NOAEL Static 48Hr Acute Cyprinodon variegatus | 0 | 15 | 0 | ||
| % Effect Static Chronic Arbacia punctulata | 0 | 14 | 0 | ||
| NOEC Sub-Lethal Static Renewal 7 Day Chronic Cyprinodeon variegatus | 0 | 14 | 0 | ||
| % Growth Reduction Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia) | 0 | 14 | 0 | ||
| Nitrogen, total [as N] | 1 | 8 | 0 | ||
| 2-Methyl-4,6-dinitrophenol | 0 | 2 | 0 | ||
| 2-Chlorophenol | 0 | 2 | 0 | ||
| 2,4-Dichlorophenol | 0 | 2 | 0 | ||
| 2,4,6-Trichlorophenol | 0 | 2 | 0 | ||
| Pentachlorophenol | 0 | 2 | 0 |
NPDES PR0023710: inspections, violations and enforcement
NPDES PR0023710: 55 single-event violations
The newest 50 of 55.
| Date | What EPA recorded | Agency |
|---|---|---|
| October 30, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 26, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 19, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 16, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 14, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| September 29, 2026 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| September 8, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| September 8, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| August 24, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| August 20, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| August 20, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| August 6, 2026 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| July 20, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| July 6, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| June 30, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| June 12, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| May 29, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| May 26, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| May 26, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| May 26, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| May 22, 2026 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| May 21, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| May 16, 2026 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| April 28, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| April 16, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| April 15, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| April 14, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| April 7, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| February 23, 2026 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| February 17, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| February 12, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| February 11, 2026 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | EP6 |
| February 5, 2026 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| January 20, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| January 18, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| January 13, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| January 12, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| January 7, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| December 20, 2025 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | EP6 |
| December 14, 2025 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| November 21, 2025 | PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)] | EP6 |
| November 18, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| November 18, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| November 15, 2025 | Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| October 28, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 24, 2025 | Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangerment | EP6 |
| October 14, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 14, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 3, 2025 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| September 15, 2025 | Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
NPDES PR0023710: 1 inspection
| Date | What EPA recorded | Agency |
|---|---|---|
| February 2, 2026 | Evaluation | E |
NPDES PR0023710 (PRASA ARECIBO WWTP): no formal enforcement action and informal enforcement action on file.
Watch NPDES PR0023710
NPDES PR0023710: one email when its EPA record changes — $99/month.
Permits near NPDES PR0023710
NPDES PR0023710: 54 pollutant rows, 56 dated events; ICIS-NPDES download, loaded October 14, 2026.