Velarion Records

Clean Water Act discharge permit · NPDES PR0020273

PRASA AGUAS BUENAS WWTP, Aguas Buenas, PR: NPDES PR0020273 discharge permit, effluent exceedances, inspections, penalties

PRASA AGUAS BUENAS WWTP, held by PRASA AGUAS BUENAS, holds NPDES permit PR0020273, which discharges to Rio Bairoa. 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 AGUAS BUENAS WWTP
Permittee as filedPRASA AGUAS BUENAS
NPDES IDPR0020273
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
AddressAguas Buenas, PR 00607
Receiving waterRIO BAIROA
Receiving water impaired303(D) Listed
SubwatershedRio Bairoa (HUC 210100050405)
Other EPA IDs (FRS)RCRA handler PRD000689240

Cited to the EPA ICIS-NPDES permit file (ECHO download); cross-program IDs from EPA’s FRS facility-registry crosswalk.

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
Chlorine, total residual1173166August 31, 201899,900% over the limit
Solids, suspended percent removal1155141April 30, 2018567% over the limit
BOD, 5-day, percent removal1148134November 30, 2016100% over the limit
Phosphorus, total [as P]2131121May 31, 2025196,150% over the limit
Phenolics, total recoverable0114111August 31, 200624,700% over the limit
Copper, total [as Cu]28173October 31, 20142,077% over the limit
Arsenic, total [as As]08171September 30, 20157,678% over the limit
Mercury, total [as Hg]05851February 28, 201422,750% over the limit
Solids, total suspended611228October 31, 2020657% over the limit
Nitrite + Nitrate total [as N]02922May 31, 201548,400% over the limit
Surfactants [MBAS]13018January 31, 2024644% over the limit
Zinc, total [as Zn]02618March 31, 20021,518% over the limit
Nitrogen, ammonia total [as N]02416July 31, 200781,978% over the limit
Color [PT-CO units]22211March 31, 2021
Coliform, total general01911August 31, 200799,999% over the limit
Cadmium, total [as Cd]01910June 30, 2006114% over the limit
Cyanide, total [as CN]01410September 30, 2005246% over the limit
BOD, 5-day, 20 deg. C6979March 31, 2021885% over the limit
Flow, in conduit or thru treatment plant3309January 31, 2015525% over the limit
Coliform, fecal general0199August 31, 20101,685% over the limit
Lead, total [as Pb]0159April 30, 2009281% over the limit
Enterococci4347April 30, 2025369% over the limit
Nitrogen, total [as N]2227May 31, 20251,215% over the limit
Temperature, water deg. centigrade1165August 31, 20243% over the limit
Oil & Grease1233January 31, 2006700% over the limit
pH2242December 31, 2023
Ammonia & ammonium- total1182January 31, 2024204% over the limit
Sulfide-hydrogen sulfide [undissociated]2112June 30, 2014149,900% over the limit
Sulfide, total [as S]082August 31, 2002250% over the limit
Selenium, total [as Se]062July 31, 20083% over the limit
Cyanide, free available142March 31, 201319,367% over the limit
Oxygen, dissolved [DO]1121July 31, 201086% over the limit
Nitrogen, ammonia, total [as NH3]0101August 31, 201010% over the limit
Phenolics, total0170
Solids, settleable1110
Manganese, total [as Mn]0110
Turbidity1100
Chromium, total [as Cr]040
Solids, total dissolved- 180 deg. C040
Coliform, fecal - % samples exceeding limit020
Whole Effluent Toxicity [WET] - P. promelas110
Whole Effluent Toxicity [WET] - D. magna110
Sulfate, total [as SO4]010
Fluoride, total [as F]010
2-Chlorophenol010
2,4-Dichlorophenol010
2,4-Dimethylphenol010

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
June 9, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 17, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 17, 2026Dry-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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Nearby on the register

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

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