Velarion Records

Clean Water Act discharge permit · NPDES PR0025461

PRASA AIBONITO WWTP, Aibonito, PR: NPDES PR0025461 discharge permit, effluent exceedances, inspections, penalties

PRASA AIBONITO WWTP holds NPDES permit PR0025461, which discharges to Aibonito 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 (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedPRASA AIBONITO WWTP
Permittee as filedPRASA AIBONITO WWTP
NPDES IDPR0025461
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typePublicly owned treatment works
ProgramPublicly owned treatment works
IssuedSeptember 29, 2014
Expiration dateNovember 30, 2019
AddressAibonito, PR 00609
Receiving waterAIBONITO RIVER
SubwatershedRio Usabon (HUC 210100050704)
Program components on filePOTW, Pretreatment
SIC4952 – Sewerage Systems
Other EPA IDs (FRS)RCRA handler PRD000689257

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same 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
BOD, 5-day, 20 deg. C10420318February 28, 202315,760% over the limit
Chlorine, total residual1150137July 31, 20243,300% over the limit
Phosphorus, total [as P]2149136April 30, 20162,300% over the limit
Copper, total [as Cu]2148134July 31, 20262,093% over the limit
Nitrite + Nitrate total [as N]2141127April 30, 201653,910% over the limit
Surfactants [MBAS]2140127October 31, 20151,230% over the limit
Phenolics, total recoverable0109105June 30, 200659,600% over the limit
Ammonia & ammonium- total0110103October 31, 200751,700% over the limit
Color [PT-CO units]211399August 31, 2015
Solids, total suspended621263June 30, 2021509% over the limit
Arsenic, total [as As]05041August 31, 200712,122% over the limit
BOD, 5-day, percent removal15134February 28, 2023220% over the limit
Solids, total dissolved24232December 31, 201943% over the limit
Coliform, fecal general14728March 31, 20208,314% over the limit
Solids, suspended percent removal14528August 31, 2019440% over the limit
Zinc, total [as Zn]03125September 30, 20061,704% over the limit
Flow, in conduit or thru treatment plant35724April 30, 201646% over the limit
Coliform, fecal - % samples exceeding limit13924March 31, 2020400% over the limit
Mercury, total [as Hg]23523July 31, 20102,795% over the limit
Solids, total dissolved- 180 deg. C02821November 30, 200720% over the limit
Coliform, total general23616December 31, 20101,500% over the limit
Nitrogen, ammonia, total [as NH3]22715August 31, 20191,000% over the limit
Manganese, total [as Mn]0218June 30, 2006660% over the limit
Turbidity1133January 31, 2008
pH2362May 31, 2008
Sulfide-hydrogen sulfide [undissociated]2232June 30, 201422,400% over the limit
Temperature, water deg. centigrade1181August 31, 20002% over the limit
Oxygen, dissolved [DO]1181November 30, 200650% over the limit
Cyanide, free available211June 30, 201552% over the limit
Oil & Grease2240
Solids, settleable1170
Cyanide, total [as CN]0110
Sulfide, total [as S]0110
Fluoride, total [as F]070
Whole Effluent Toxicity [WET] - P. promelas120
Whole Effluent Toxicity [WET] - D. magna120
2-Chlorophenol010
Chromium, hexavalent [as Cr]200

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

EPA’s single-event violation file, as loaded, holds no violation for NPDES PR0025461.

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.

Watch this permit

One permit holder, $99/month. Watch the register for one permit holder and the places and receiving waters tied to its permits. Choose “One permit holder” and enter this permit’s NPDES ID, PR0025461.

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How we handle your data → Privacy

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 PR0025461 there.

Nearby on the register

Figures from EPA’s ICIS-NPDES download, loaded October 14, 2026.

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