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Clean Water Act discharge permit · NPDES PR0023752

PRASA CAROLINA WWTP, San Juan, PR: NPDES PR0023752 discharge permit, effluent exceedances, inspections, penalties

PRASA CAROLINA WWTP, held by PRASA CAROLINA RWWTP, holds NPDES permit PR0023752, which discharges to Atlantic Ocean. EPA’s file records it issued December 17, 2010 and expiring February 28, 2016. 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 CAROLINA WWTP
Permittee as filedPRASA CAROLINA RWWTP
NPDES IDPR0023752
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
IssuedDecember 17, 2010
Expiration dateFebruary 28, 2016
AddressSan Juan, PR 00672
Receiving waterATLANTIC OCEAN
SubwatershedNon-contributing area-Name not assigned (HUC 210100020506)

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
Flow, in conduit or thru treatment plant4254127February 29, 2008186% over the limit
Coliform, fecal general114077May 31, 2018805,850% over the limit
Chlorine, total residual113168September 30, 2022439,900% over the limit
Coliform, total general010454December 31, 20101,050,880% over the limit
Solids, total suspended439353September 30, 2008400% over the limit
Solids, suspended percent removal19533April 30, 2024150% over the limit
BOD, 5-day, 20 deg. C430127July 31, 202153% over the limit
BOD, 5-day, percent removal18523April 30, 202473% over the limit
Zinc, total [as Zn]17511October 31, 2020970% over the limit
Sulfide-hydrogen sulfide [undissociated]1259July 31, 2020383% over the limit
Temperature, water deg. centigrade1708September 30, 202428% over the limit
pH21317November 30, 2011
Cyanide, free available1216February 28, 2019220% over the limit
Coliform, fecal - % samples exceeding limit1186May 31, 2018400% over the limit
Nickel, total [as Ni]1705October 31, 20237,122% over the limit
Mercury, total [as Hg]1664April 30, 2013894% over the limit
Sulfide, total [as S]0544April 30, 20016,614% over the limit
Phenolics, total recoverable0524January 31, 1998800% over the limit
Oil & Grease11502April 30, 200670% over the limit
Copper, total [as Cu]1662April 30, 202497% over the limit
Lead, total [as Pb]1641July 31, 2023240% over the limit
Surfactants [MBAS]1641December 31, 20064% over the limit
Turbidity1631January 31, 2013
Color [PT-CO units]1631July 31, 2011
Cadmium, total [as Cd]0521December 31, 199662,153% over the limit
Cyanide, total [as CN]0511September 30, 200622,592% over the limit
Nitrogen, inorganic total0481April 30, 2006134% over the limit
Enterococci - % of upper confidence limit1880
Enterococci1880
Oxygen, dissolved [DO]1640
Silver, total [as Ag]1640
Thallium, total [as Tl]1630
Solids, settleable1620
Antimony, total [as Sb]0530
Nitrogen, Kjeldahl, total [as N]0520
Arsenic, total [as As]0510
Barium, total [as Ba]0510
Selenium, total [as Se]0510
Fluoride, total [as F]0500
Manganese, total [as Mn]0490
% Effect Static Chronic Arbacia punctulata1310
Nitrogen, total [as N]1160
NOEC Sub-Lethal Static Renewal 7 Day Chronic Cyprinodeon variegatus180
% Growth Reduction Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)180
Whole Effluent Toxicity [WET] - Americamysis bahia (formerly Mysidopsis bahia)170
NOAEL Static 48Hr Acute Cyprinodon variegatus170
Nitrite + Nitrate total [as N]040
Boron, total [as B]030
Chromium, total [as Cr]030

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 53.

DateWhat EPA recordedAgency
September 8, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 17, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
July 29, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
July 28, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
July 28, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
July 16, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
June 15, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
May 22, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
May 21, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
May 13, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
May 12, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 30, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 15, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 13, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
April 6, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 31, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 30, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 23, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 21, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 20, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 9, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 7, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 3, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
March 2, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 19, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 18, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 16, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 16, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 10, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 9, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 6, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
February 4, 2026Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
January 19, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
January 7, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
November 3, 2025Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 23, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 13, 2025Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 13, 2025Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 4, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 4, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 3, 2025Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
October 3, 2025Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 26, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 22, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 20, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 16, 2025Wet-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 29, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 25, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 24, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 17, 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 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, PR0023752.

Start the watch

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  • One watershed — $2,990/year
  • One state — $4,990/year
  • The whole register — $18,000/year

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 PR0023752 there.

Nearby on the register

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