Velarion Records

Clean Water Act discharge permit · NPDES PR0022438

PRASA GUAYNABO WTP, Guaynabo, PR: NPDES PR0022438 discharge permit, effluent exceedances, inspections, penalties

PRASA GUAYNABO WTP holds NPDES permit PR0022438, which discharges to El Marquez Creek\. EPA’s file records it issued September 29, 2015 and expiring January 31, 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 GUAYNABO WTP
Permittee as filedPRASA GUAYNABO WTP
NPDES IDPR0022438
Permit statusAdministratively continued (past its expiration date and still in force until reissued)
Permit typeIndividual permit
Discharger classMajor discharger
Facility typeNot a publicly owned treatment works
IssuedSeptember 29, 2015
Expiration dateJanuary 31, 2021
AddressGuaynabo, PR 00965
Receiving waterEL MARQUEZ CREEK\
Receiving water impaired303(D) Listed
SubwatershedRio de Bayamon at mouth (HUC 210100050603)
Other EPA IDs (FRS)RCRA handler PRD987381449

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 residual1151135October 31, 202414,700% over the limit
Arsenic, total [as As]0120106July 31, 201299,900% over the limit
Flow, in conduit or thru treatment plant2129104May 31, 200968,254% over the limit
Copper, total [as Cu]2119100June 30, 20266,800% over the limit
Phenolics, total recoverable09484November 30, 200737,200% over the limit
Lead, total [as Pb]28977February 29, 20122,797% over the limit
Mercury, total [as Hg]28265February 29, 201241,567% over the limit
Manganese, total [as Mn]07263November 30, 200723,300% over the limit
Oxygen, dissolved [DO]27254January 31, 202281% over the limit
Turbidity25842December 31, 2021
BOD, 5-day, 20 deg. C15131February 28, 202619,900% over the limit
Sulfide, dissolved, [as S]03727October 31, 200549,900% over the limit
Phosphorus, total [as P]23625June 30, 20262,400% over the limit
Zinc, total [as Zn]03224November 30, 20071,228% over the limit
Color [PT-CO units]1288May 31, 2020
Oil & Grease0148December 31, 199549,900% over the limit
pH2437January 31, 2025
Ammonia & ammonium- total0177March 31, 20077,900% over the limit
Coliform, fecal general0256February 29, 2012106,315% over the limit
Fluoride, total [as F]0122November 30, 200066% over the limit
Coliform, fecal - % samples exceeding limit082February 29, 2012400% over the limit
Temperature, water deg. centigrade1191June 30, 20234% over the limit
Coliform, total general0101December 31, 200999,999% over the limit
Surfactants [MBAS]051November 30, 2006120% over the limit
Sulfide-hydrogen sulfide [undissociated]0770
Solids, settleable1180
Nitrogen, ammonia, total [as NH3]170
Whole Effluent Toxicity [WET] - P. promelas150
Whole Effluent Toxicity [WET] - D. magna150
Solids, total dissolved220
2-Methyl-4,6-dinitrophenol020
2-Chlorophenol020
2,4-Dichlorophenol020
2,4-Dimethylphenol020
2,4-Dinitrophenol020
2,4,6-Trichlorophenol020
Phenol020
Pentachlorophenol020
Solids, total dissolved- 180 deg. C020
Sulfate, total [as SO4]210

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 PR0022438.

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, PR0022438.

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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 PR0022438 there.

Nearby on the register

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

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