Velarion Records

Clean Water Act discharge permit · NPDES PR0025976

PRASA CAGUAS WWTP, Caguas, PR: NPDES PR0025976 discharge permit, effluent exceedances, inspections, penalties

PRASA CAGUAS WWTP, held by PRASA CAGUAS WWTP, holds NPDES permit PR0025976, which discharges to Bairoa River. 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 (October 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedPRASA CAGUAS WWTP
Permittee as filedPRASA CAGUAS WWTP
NPDES IDPR0025976
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 28, 2016
Expiration dateNovember 30, 2021
AddressCaguas, PR 00725
Receiving waterBAIROA RIVER
Receiving water impaired303(D) Listed
SubwatershedRio Bairoa (HUC 210100050405)
Program components on filePOTW, Pretreatment
SIC4952 – Sewerage Systems
Other EPA IDs (FRS)RCRA handler PRR000013029

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
Arsenic, total [as As]0118114February 28, 200711,011% over the limit
Nitrite + Nitrate total [as N]0113108April 30, 2016464,734% over the limit
Phenolics, total recoverable0109105July 31, 200633,900% over the limit
Mercury, total [as Hg]09793September 30, 200733,233% over the limit
Cyanide, total [as CN]010083January 31, 20251,200% over the limit
Flow, in conduit or thru treatment plant611279September 30, 2007145,517% over the limit
BOD, 5-day, 20 deg. C1015575November 30, 20251,750% over the limit
Color [PT-CO units]38474June 30, 2026
Phosphorus, total [as P]48272January 31, 202212,928,249% over the limit
Copper, total [as Cu]27872August 31, 200711,438% over the limit
Lead, total [as Pb]07368August 31, 20061,656% over the limit
Solids, total suspended613553December 31, 2025856% over the limit
Ammonia & ammonium- total16552July 31, 20264,600% over the limit
Chlorine, total residual15848November 30, 20184,454,446% over the limit
Manganese, total [as Mn]05648June 30, 2007508% over the limit
Cadmium, total [as Cd]05147January 31, 20079,900% over the limit
Sulfide, total [as S]04338August 31, 200249,900% over the limit
Enterococci46236March 31, 2025893% over the limit
BOD, 5-day, percent removal14732October 31, 2025100% over the limit
Zinc, total [as Zn]03832September 30, 2006610% over the limit
Solids, suspended percent removal14227June 30, 2022213% over the limit
Surfactants [MBAS]13725August 31, 202443,900% over the limit
Coliform, fecal general03122April 30, 20164,389% over the limit
Temperature, water deg. centigrade13019July 31, 20268% over the limit
Coliform, fecal - % samples exceeding limit02016June 30, 2016300% over the limit
Chromium, hexavalent [as Cr]22512November 30, 200082% over the limit
Silver, total [as Ag]01910January 31, 20062,400% over the limit
Coliform, total general0128October 31, 20041,326% over the limit
Nitrogen, ammonia, total [as NH3]0166August 31, 201677% over the limit
Nitrogen, total [as N]2194April 30, 20171,256% over the limit
Sulfide-hydrogen sulfide [undissociated]1174April 30, 20113,739,900% over the limit
Oxygen, dissolved [DO]1143January 31, 2022100% over the limit
Turbidity1133February 28, 2014
Oil & Grease1182October 31, 199640% over the limit
Cyanide, free available2851February 29, 20162% over the limit
pH2251December 31, 1999
Selenium, total [as Se]0141February 28, 20071,668% over the limit
Nickel, total [as Ni]0131April 30, 200571% over the limit
Fluoride, total [as F]0121November 30, 201114% over the limit
Solids, total dissolved- 180 deg. C081May 31, 19996% over the limit
Chromium III0830
Solids, settleable1120
Chromium, total [as Cr]0120
Barium, total [as Ba]0110
Boron, total [as B]0110
Chloride [as Cl]080
Whole Effluent Toxicity [WET] - P. promelas170
Whole Effluent Toxicity [WET] - D. magna170
2,4-Dichlorophenol020
2,4-Dimethylphenol020
2,4-Dinitrophenol020
2,4,6-Trichlorophenol020
Phenol020
Pentachlorophenol020
Sulfate, total [as SO4]010
2-Methyl-4,6-dinitrophenol010
2-Chlorophenol010

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

The newest 50 of 72.

DateWhat EPA recordedAgency
August 21, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 15, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 15, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 13, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 4, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
July 7, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
June 29, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
June 14, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
May 28, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 9, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 9, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 1, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 16, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 4, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 28, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 17, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 12, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 1, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
January 26, 2026Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
January 19, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
January 13, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
January 11, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
January 10, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
January 7, 2026Dry-weather SSO, no discharge to waters of the U.S., that may endanger health or the environmentEP6
January 6, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
January 5, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
January 4, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
December 30, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
December 29, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
December 28, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
December 24, 2025Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
December 23, 2025Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
December 22, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
December 22, 2025Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
December 21, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
December 18, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
December 16, 2025Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
December 15, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
December 4, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
December 4, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
December 3, 2025PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
November 30, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
November 28, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
November 27, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
November 24, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
November 24, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
November 23, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
November 20, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
November 17, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 28, 2025Dry-weather SSO, no 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 October 14, 2026.

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