Velarion Records

Clean Water Act discharge permit · NPDES PR0020737

PRASA NARANJITO WWTP, Naranjito, PR: NPDES PR0020737 discharge permit, effluent exceedances, inspections, penalties

PRASA NARANJITO WWTP, held by PRASA NARANJITO, holds NPDES permit PR0020737, which discharges to Rio Guardiana. EPA’s file records it issued April 27, 2017 and expiring June 30, 2022. 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 NARANJITO WWTP
Permittee as filedPRASA NARANJITO
NPDES IDPR0020737
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
IssuedApril 27, 2017
Expiration dateJune 30, 2022
AddressNaranjito, PR 00719
Receiving waterRIO GUARDIANA
Receiving water impaired303(D) Listed
SubwatershedRio Guadiana (HUC 210100050709)
Program components on filePOTW, Pretreatment
SIC4952 – Sewerage Systems
Other EPA IDs (FRS)RCRA handler PRD000689778

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
Nitrite + Nitrate total [as N]0159154April 30, 201699,900% over the limit
Chlorine, total residual1156147December 31, 20111,060% over the limit
BOD, 5-day, 20 deg. C6229127May 31, 20241,951% over the limit
Phosphorus, total [as P]2135126May 31, 20092,347% over the limit
Solids, suspended percent removal1121108February 28, 20266,060% over the limit
BOD, 5-day, percent removal19179January 31, 2026213% over the limit
Flow, in conduit or thru treatment plant411161March 31, 201667,525% over the limit
Coliform, fecal general05953September 30, 201499,999% over the limit
Oxygen, dissolved [DO]16250September 30, 199586% over the limit
Mercury, total [as Hg]25850September 30, 201839,650% over the limit
Solids, total suspended618948February 28, 2026670% over the limit
Arsenic, total [as As]04845September 30, 2008699,900% over the limit
Coliform, total general04842October 31, 200999,999% over the limit
Phenolics, total recoverable04340July 31, 200616,800% over the limit
Surfactants [MBAS]14937January 31, 20061,560% over the limit
Enterococci43616July 31, 20261,762% over the limit
Oil & Grease13216June 30, 2005567% over the limit
pH23915December 31, 2012
Color [PT-CO units]22614June 30, 2005
Cyanide, total [as CN]01612April 30, 2007208% over the limit
Ammonia & ammonium- total12411July 31, 2026571% over the limit
Solids, total dissolved31710January 31, 202636% over the limit
Coliform, fecal - % samples exceeding limit01610September 30, 201414,900% over the limit
Nitrogen, ammonia, total [as NH3]01010September 30, 20153,650% over the limit
Temperature, water deg. centigrade1219July 31, 20266% over the limit
Nitrogen, ammonia total [as N]0158August 31, 2008538% over the limit
Sulfide-hydrogen sulfide [undissociated]2226May 31, 2026344,900% over the limit
Ammonia, unionized0116February 29, 2004170,900% over the limit
Turbidity1145September 30, 2004
Lead, total [as Pb]095September 30, 2006382% over the limit
Manganese, total [as Mn]074December 31, 2004610% over the limit
Cyanide, free available1133March 31, 201937,478% over the limit
Solids, total dissolved- 180 deg. C092January 31, 199420% over the limit
Toxicity0170
Chromium, hexavalent [as Cr]0140
Nitrogen, total [as N]2120
Solids, settleable1120
Zinc, total [as Zn]080
Copper, total [as Cu]270
Whole Effluent Toxicity [WET] - P. promelas170
Whole Effluent Toxicity [WET] - D. magna170
Fluoride, total [as F]070
Sulfide, total [as S]060
Chromium, total [as Cr]060
Chromium III030
Cadmium, total [as Cd]020
2-Methyl-4,6-dinitrophenol020
Whole effluent toxicity020
2-Chlorophenol020
2,4-Dichlorophenol020
2,4-Dimethylphenol020
2,4-Dinitrophenol020
2,4,6-Trichlorophenol020
Phenol020
Pentachlorophenol020

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 21, 2026PR: Failure to submit noncompliance report - CSO, SSO, or Bypass [40 CFR 122.41(l)(6) & (m)(3)(ii)]EP6
July 15, 2026Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
September 15, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 12, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
September 11, 2025Dry-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
September 10, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 17, 2025Wet-weather unanticipated prohibited bypass discharge to waters of the U.S. - endangermentEP6
February 27, 2017Management Practice Violations - Improper Operation and MaintenanceEP6

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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