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Clean Water Act discharge permit · NPDES PR0020575

PRASA LAJAS WWTP, Lajas, PR: NPDES PR0020575 discharge permit, effluent exceedances, inspections, penalties

PRASA LAJAS WWTP, held by PRASA LAJAS, holds NPDES permit PR0020575, which discharges to Mondongo Greek. 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 14, 2026); EPA’s free Detailed Facility Report on ECHO carries the permit’s current standing.

Identity

Facility as filedPRASA LAJAS WWTP
Permittee as filedPRASA LAJAS
NPDES IDPR0020575
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
AddressLajas, PR 00667
Receiving waterMONDONGO GREEK
Receiving water impaired303(D) Listed
SubwatershedEastern Valle de Lajas (HUC 210100040104)

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
Chlorine, total residual1129123September 30, 20206,900% over the limit
Color [PT-CO units]28574January 31, 2016
Phosphorus, total [as P]27967January 31, 2016405,700% over the limit
Copper, total [as Cu]16961March 31, 20261,371% over the limit
Arsenic, total [as As]17160November 30, 20146,844% over the limit
Zinc, total [as Zn]05045April 30, 2009546% over the limit
Surfactants [MBAS]14741July 31, 202624,900% over the limit
Coliform, fecal general15437April 30, 201999,999% over the limit
Coliform, fecal - % samples exceeding limit14034April 30, 2019400% over the limit
Flow, in conduit or thru treatment plant35333November 30, 2015108% over the limit
BOD, 5-day, 20 deg. C611529October 31, 202299,999% over the limit
Phenolics, total recoverable03125February 28, 20071,224% over the limit
Solids, total dissolved22424September 30, 20151,220% over the limit
Nitrite + Nitrate total [as N]12519September 30, 20088,700% over the limit
Nitrogen, ammonia, total [as NH3]12215October 31, 20192,230% over the limit
Selenium, total [as Se]22115November 30, 2025830% over the limit
Coliform, total general12214February 28, 201899,999% over the limit
Ammonia & ammonium- total02014December 31, 2006186% over the limit
Solids, total suspended610410March 31, 2021389% over the limit
Cyanide, free available11910April 30, 2019129% over the limit
Oxygen, dissolved [DO]1165April 30, 202222% over the limit
BOD, 5-day, percent removal1155November 30, 202599,999% over the limit
Mercury, total [as Hg]0174December 31, 2013274% over the limit
Solids, suspended percent removal1144May 31, 201499,999% over the limit
Solids, total dissolved- 180 deg. C0124November 30, 2007220% over the limit
Temperature, water deg. centigrade1123January 31, 2005832% over the limit
Oil & Grease1171January 31, 200453% over the limit
Turbidity1151March 31, 2012
Cadmium, total [as Cd]141February 28, 201783% over the limit
pH2200
Fluoride, total [as F]0160
Chloride [as Cl]0150
Cyanide, total [as CN]0140
Solids, settleable1110
Sulfide-hydrogen sulfide [undissociated]120
Whole Effluent Toxicity [WET] - P. promelas120
Whole Effluent Toxicity [WET] - D. magna120

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
April 29, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 25, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 25, 2026Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 19, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 14, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 12, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 12, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 10, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 16, 2026Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 25, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 25, 2026Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 5, 2026Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
January 24, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 28, 2025Dry-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 26, 2025Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 16, 2025Wet-weather SSO discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 29, 2025Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 26, 2025Wet-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 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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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 PR0020575 there.

Nearby on the register

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