Clean Water Act discharge permit · NPDES PR0025658
PRASA COMERIO WWTP, Comerio, PR: NPDES PR0025658 discharge permit, effluent exceedances, inspections, penalties
- Administratively continuedPermit status
- MajorDischarger class
- 31Pollutants under a numeric limit
- 30Pollutants with an effluent exceedance
PRASA COMERIO WWTP, held by PRASA COMERIO WASTE WATER TREA, holds NPDES permit PR0025658, which discharges to La Plata River. EPA’s file records it issued September 29, 2014 and expiring November 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 | PRASA COMERIO WWTP |
|---|---|
| Permittee as filed | PRASA COMERIO WASTE WATER TREA |
| NPDES ID | PR0025658 |
| 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 | September 29, 2014 |
| Expiration date | November 30, 2019 |
| Address | Comerio, PR 00782 |
| Receiving water | LA PLATA RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Rio de la Plata at Represa Comerio Dam (HUC 210100050707) |
Cited to the EPA ICIS-NPDES permit file (ECHO download).
Effluent limits and exceedances
- 47Pollutants on file
- 31Under a numeric limit
- 46With a violation of any kind
- 30With 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, total residual | 1 | 126 | 118 | November 30, 2022 | 1,809% over the limit |
| BOD, 5-day, 20 deg. C | 8 | 120 | 70 | May 31, 2025 | 179,900% over the limit |
| Phosphorus, total [as P] | 1 | 59 | 48 | May 31, 2006 | 39,080% over the limit |
| Arsenic, total [as As] | 0 | 52 | 45 | August 31, 2007 | 6,567% over the limit |
| Color [PT-CO units] | 1 | 56 | 44 | April 30, 2025 | |
| Phenolics, total recoverable | 0 | 46 | 40 | May 31, 2006 | 10,800% over the limit |
| Copper, total [as Cu] | 2 | 45 | 32 | November 30, 2023 | 1,943% over the limit |
| Ammonia & ammonium- total | 0 | 34 | 31 | February 28, 2007 | 1,000% over the limit |
| Solids, suspended percent removal | 1 | 48 | 30 | January 31, 2021 | 413% over the limit |
| BOD, 5-day, percent removal | 1 | 62 | 26 | May 31, 2025 | 3,453% over the limit |
| Coliform, fecal general | 1 | 33 | 23 | August 31, 2018 | 99,999% over the limit |
| Coliform, fecal - % samples exceeding limit | 1 | 31 | 19 | August 31, 2018 | 400% over the limit |
| Lead, total [as Pb] | 2 | 25 | 17 | January 31, 2010 | 339% over the limit |
| Coliform, total general | 2 | 21 | 17 | August 31, 2009 | 99,999% over the limit |
| Mercury, total [as Hg] | 3 | 22 | 15 | January 31, 2010 | 6,300% over the limit |
| Cyanide, total [as CN] | 0 | 23 | 14 | February 28, 2006 | 265% over the limit |
| Solids, total suspended | 6 | 103 | 12 | January 31, 2021 | 26,900% over the limit |
| Flow, in conduit or thru treatment plant | 4 | 37 | 11 | December 31, 2003 | 200% over the limit |
| Sulfide-hydrogen sulfide [undissociated] | 2 | 25 | 11 | August 31, 2025 | 34,900% over the limit |
| Surfactants [MBAS] | 2 | 18 | 7 | December 31, 2010 | 195% over the limit |
| Nitrite + Nitrate total [as N] | 1 | 16 | 5 | April 30, 2007 | 46,700% over the limit |
| pH | 2 | 28 | 4 | November 30, 2008 | |
| Temperature, water deg. centigrade | 1 | 16 | 3 | September 30, 2024 | 739% over the limit |
| Oxygen, dissolved [DO] | 1 | 16 | 3 | August 31, 2019 | 100% over the limit |
| Oil & Grease | 2 | 14 | 2 | July 31, 2007 | 3% over the limit |
| Silver, total [as Ag] | 2 | 13 | 1 | December 31, 2009 | 93% over the limit |
| Manganese, total [as Mn] | 0 | 11 | 1 | August 31, 2005 | 65% over the limit |
| Solids, total dissolved | 1 | 8 | 1 | January 31, 2020 | 5% over the limit |
| Sulfide, total [as S] | 0 | 8 | 1 | February 28, 2007 | 100% over the limit |
| Cyanide, free available | 3 | 1 | 1 | July 31, 2009 | 68% over the limit |
| Cadmium, total [as Cd] | 2 | 12 | 0 | ||
| Solids, settleable | 1 | 12 | 0 | ||
| Fluoride, total [as F] | 0 | 10 | 0 | ||
| Chromium, total [as Cr] | 0 | 10 | 0 | ||
| Nickel, total [as Ni] | 0 | 10 | 0 | ||
| Zinc, total [as Zn] | 0 | 10 | 0 | ||
| Antimony, total [as Sb] | 0 | 10 | 0 | ||
| Nitrogen, ammonia, total [as NH3] | 2 | 8 | 0 | ||
| Turbidity | 1 | 8 | 0 | ||
| Solids, total dissolved- 180 deg. C | 0 | 8 | 0 | ||
| Aluminum, total [as Al] | 0 | 5 | 0 | ||
| Whole Effluent Toxicity [WET] - P. promelas | 1 | 2 | 0 | ||
| Whole Effluent Toxicity [WET] - D. magna | 1 | 2 | 0 | ||
| Enterococci | 0 | 2 | 0 | ||
| Nitrogen, total [as N] | 0 | 1 | 0 | ||
| Chromium III | 0 | 1 | 0 | ||
| Sulfate, total [as SO4] | 2 | 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
- 7Single-event violations
| Date | What EPA recorded | Agency |
|---|---|---|
| September 5, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| April 8, 2026 | Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| March 11, 2026 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| November 28, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| November 14, 2025 | Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangerment | EP6 |
| October 1, 2025 | Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environment | EP6 |
| March 8, 2017 | Management Practice Violations - Improper Operation and Maintenance | EP6 |
Velarion’s copy of EPA’s ICIS-NPDES files does not yet 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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Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.