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Clean Water Act discharge permit · NPDES PR0026549

PRASA CULEBRA WWTP, Culebra, PR: NPDES PR0026549 discharge permit, effluent exceedances, inspections, penalties

PRASA CULEBRA WWTP, held by PRASA Culebra WWTP, holds NPDES permit PR0026549. EPA’s file records it issued September 28, 2016 and expiring November 30, 2021. 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 filedPRASA CULEBRA WWTP
Permittee as filedPRASA Culebra WWTP
NPDES IDPR0026549
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMinor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 28, 2016
Expiration dateNovember 30, 2021
AddressCulebra, PR 00775
Receiving water impaired303(D) Listed
SubwatershedSouthern Culebra (HUC 210100060202)

Cited to the EPA ICIS-NPDES permit file (ECHO download).

Effluent limits and exceedances

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 measureLimitsViolations, any kindEffluent exceedancesLatest exceedanceLargest exceedance, as filed
Enterococci46745July 31, 202699,999% over the limit
Arsenic, total [as As]02827August 31, 20151,111% over the limit
BOD, 5-day, 20 deg. C109623April 30, 2025127% over the limit
Temperature, water deg. centigrade12819July 31, 20269% over the limit
Color [PT-CO units]22516May 31, 2023
Nitrite + Nitrate total [as N]01615January 31, 2016124% over the limit
Solids, total suspended68714August 31, 2025144% over the limit
Solids, suspended percent removal12214August 31, 2025227% over the limit
Sulfide-hydrogen sulfide [undissociated]1179January 31, 2025210,900% over the limit
Chlorine, total residual1156February 28, 20183,355% over the limit
BOD, 5-day, percent removal1146November 30, 2025173% over the limit
Ammonia nitrogen, total, [as N] 30 day086April 30, 20161,610% over the limit
Cyanide, total [as CN]0234December 31, 2025119% over the limit
Surfactants [MBAS]1104July 31, 2026204% over the limit
Sulfide, total [as S]054May 31, 201669,900% over the limit
Coliform, fecal - % samples exceeding limit054June 30, 2016400% over the limit
Enterococci: group D, MF trans, M-E, EIA054April 30, 20151,117% over the limit
Oxygen, dissolved [DO]1123February 28, 201919% over the limit
Coliform, fecal general043June 30, 20161,153% over the limit
pH2202September 30, 2020
Cyanide, free available1122March 31, 2019113% over the limit
Copper, total [as Cu]2112February 28, 2017279% over the limit
Enterococci - % of upper confidence limit0970
Flow, in conduit or thru treatment plant6670
Nitrogen, total [as N]3160
Ammonia & ammonium- total1140
Solids, settleable190
Oil & Grease190
Phosphorus, total [as P]180
Sulfate, total [as SO4]180
Cadmium, total [as Cd]260
Lead, total [as Pb]260
Silver, total [as Ag]260
Zinc, total [as Zn]260
2-Methyl-4,6-dinitrophenol260
Pentachlorophenol260
Turbidity160
Whole Effluent Toxicity [WET] - P. promelas140
Whole Effluent Toxicity [WET] - D. magna140
Mercury, total [as Hg]020
Hardness, total [as CaCO3]010
Nickel, total [as Ni]010
Selenium, total [as Se]010
2-Chlorophenol010
2,4-Dichlorophenol010
2,4-Dimethylphenol010
2,4-Dinitrophenol010
2,4,6-Trichlorophenol010
Phenols010
Coliform, total general010

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

DateWhat EPA recordedAgency
July 12, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
July 9, 2026Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
June 22, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
June 4, 2026Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 18, 2025Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6

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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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 PR0026549 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded September 15, 2026.