Clean Water Act discharge permit · NPDES PR0025526

PRASA PATILLAS WTP, Patillas, PR: NPDES PR0025526 discharge permit, effluent exceedances, inspections, penalties

Administratively continuedPermit status
MinorDischarger class
17Pollutants under a numeric limit
23Pollutants with an effluent exceedance

PRASA PATILLAS WTP, held by PRASA WTP PATILLAS, holds NPDES permit PR0025526, which discharges to Patillas Creek. 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 filed	PRASA PATILLAS WTP
Permittee as filed	PRASA WTP PATILLAS
NPDES ID	PR0025526
Permit status	Administratively continued (past its expiration date and still in force until reissued)
Permit type	Individual permit
Discharger class	Minor discharger
Facility type	Not a publicly owned treatment works
Issued	September 28, 2016
Expiration date	November 30, 2021
Address	Patillas, PR 00723
Receiving water	PATILLAS CREEK
Subwatershed	Rio Grande de Patillas at Lago Patillas Dam (HUC 210100040506)
SIC	4941 – Water Supply

Cited to the EPA ICIS-NPDES permit file (ECHO download) and EPA’s NAICS/SIC and component files, the same download.

Effluent limits and exceedances

42Pollutants on file
17Under a numeric limit
41With a violation of any kind
23With an effluent exceedance

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 measure	Limits	Violations, any kind	Effluent exceedances	Latest exceedance	Largest exceedance, as filed
Copper, total [as Cu]	2	95	81	November 30, 2022	4,075% over the limit
Iron, total [as Fe]	0	64	55	August 31, 2001	3,067% over the limit
Turbidity	2	68	51	November 30, 2022
Chlorine, total residual	1	67	49	April 30, 2012	252% over the limit
Lead, total [as Pb]	2	31	17	February 28, 2025	1,900% over the limit
Phenolics, total recoverable	0	23	17	September 30, 2007	6,950% over the limit
Flow, in conduit or thru treatment plant	2	38	15	July 31, 2012	256% over the limit
Sulfide-hydrogen sulfide [undissociated]	1	25	14	November 30, 2022	99,900% over the limit
Cyanide, total [as CN]	0	25	12	December 31, 2009	38,362% over the limit
Manganese, total [as Mn]	0	18	12	September 30, 2007	1,394% over the limit
Phosphorus, total [as P]	1	33	11	April 30, 2007	85,600% over the limit
Cadmium, total [as Cd]	2	25	10	January 31, 2017	1,900% over the limit
Solids, total dissolved	0	17	6	March 31, 2012	35,900% over the limit
Ammonia & ammonium- total	1	23	4	October 31, 2005	561% over the limit
Nitrogen, ammonia, total [as NH3]	0	13	4	June 30, 2011	229,900% over the limit
Color [PT-CO units]	0	19	3	February 29, 2016
BOD, 5-day, 20 deg. C	0	19	3	October 31, 2005	99,999% over the limit
Sulfide, total [as S]	0	10	3	September 30, 2007	99,900% over the limit
Temperature, water deg. centigrade	1	23	2	September 30, 2004	15% over the limit
Coliform, fecal general	0	21	1	November 30, 2004	1,050% over the limit
Fluoride, dissolved [as F]	0	11	1	December 31, 1997	243% over the limit
Coliform, fecal - % samples exceeding limit	0	11	1	November 30, 2004	100% over the limit
Fluoride, total [as F]	0	10	1	May 31, 2007	8,900% over the limit
pH	2	46	0
Oxygen, dissolved [DO]	1	24	0
Solids, settleable	1	23	0
Oil & Grease	0	22	0
Sulfate, total [as SO4]	2	11	0
Nitrite + Nitrate total [as N]	0	10	0
Chloride [as Cl]	0	10	0
Coliform, total general	0	10	0
Whole Effluent Toxicity [WET] - P. promelas	1	5	0
Whole Effluent Toxicity [WET] - D. magna	1	5	0
2-Methyl-4,6-dinitrophenol	0	2	0
2-Chlorophenol	0	2	0
2,4-Dichlorophenol	0	2	0
2,4-Dimethylphenol	0	2	0
2,4-Dinitrophenol	0	2	0
2,4,6-Trichlorophenol	0	2	0
Phenol	0	2	0
Pentachlorophenol	0	2	0
Cyanide, free available	1	0	0

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

0Single-event violations

EPA’s single-event violation file, as loaded, holds no violation for NPDES PR0025526.

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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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 PR0025526 there.

Nearby on the register

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

This EPA public-records page covers NPDES permit PR0025526 for PRASA PATILLAS WTP in Patillas, PR, which is administratively continued and classed as a minor discharger, with its receiving water listed as Patillas Creek in the Rio Grande de Patillas at Lago Patillas Dam subwatershed (HUC 210100040506). The register lists 17 minor-discharger class entries, 23 pollutants under a numeric limit, and 42 pollutants on file.