Velarion Records

Clean Water Act discharge permit · NPDES PR0025879

PRASA LARES WWTP, Lares, PR: NPDES PR0025879 discharge permit, effluent exceedances, inspections, penalties

PRASA LARES WWTP holds NPDES permit PR0025879, which discharges to Rio Guajataca. EPA’s file records it issued June 28, 2018 and expiring July 31, 2023. 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 LARES WWTP
Permittee as filedPRASA LARES WWTP
NPDES IDPR0025879
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
IssuedJune 28, 2018
Expiration dateJuly 31, 2023
AddressLares, PR 00751
Receiving waterRIO GUAJATACA
SubwatershedRio Usabon (HUC 210100050704)
Program components on filePOTW, Pretreatment
SIC4952 – Sewerage Systems
Other EPA IDs (FRS)RCRA handler PRD000689679

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
Chlorine, total residual1169149April 30, 202215,445% over the limit
Surfactants [MBAS]2167145June 30, 20152,242% over the limit
Solids, suspended percent removal1131109August 31, 2024167% over the limit
Phosphorus, total [as P]2129104March 31, 20141,584% over the limit
Coliform, total general012098February 28, 201359,900% over the limit
BOD, 5-day, percent removal112294August 31, 202455,207% over the limit
Arsenic, total [as As]011485September 30, 20152,147,483,650% over the limit
BOD, 5-day, 20 deg. C619874August 31, 2024104,900% over the limit
Phenolics, total recoverable08273May 31, 200618,200% over the limit
Coliform, fecal general210169June 30, 201899,999% over the limit
Color [PT-CO units]28867November 30, 2015
Solids, total suspended617159March 31, 2021411% over the limit
Flow, in conduit or thru treatment plant49054April 30, 201765,157% over the limit
Nitrogen, ammonia total [as N]05551July 31, 2003173% over the limit
Sulfide, total [as S]05847February 29, 200869,900% over the limit
Nitrogen, ammonia, total [as NH3]06738April 30, 2016340% over the limit
Mercury, total [as Hg]15828April 30, 2016335,614% over the limit
Nitrogen, total [as N]23026July 31, 20261,728% over the limit
Coliform, fecal - % samples exceeding limit23719February 28, 2009400% over the limit
Enterococci01511March 31, 20261,762% over the limit
Oxygen, dissolved [DO]1359March 31, 200745% over the limit
Cyanide, total [as CN]0288February 28, 2006304% over the limit
Ammonia nitrogen, total, [as N] 30 day0147March 31, 2006442% over the limit
Cyanide, free available1246October 31, 2021226% over the limit
Manganese, total [as Mn]0215July 31, 2005182% over the limit
Oil & Grease1424July 31, 2008110% over the limit
Turbidity1294May 31, 2011
Temperature, water deg. centigrade1273July 31, 2021735% over the limit
Sulfide-hydrogen sulfide [undissociated]2213February 28, 2014100% over the limit
Nitrite + Nitrate total [as N]0232December 31, 2013344% over the limit
pH2480
Solids, settleable1250
Cadmium, total [as Cd]2210
Selenium, total [as Se]0210
Lead, total [as Pb]2170
Fluoride, total [as F]0170
Silver, total [as Ag]0150
2-Methyl-4,6-dinitrophenol0140
2-Chlorophenol0140
2,4-Dichlorophenol0140
2,4-Dinitrophenol0140
2,4,6-Trichlorophenol0140
Pentachlorophenol0140
Chromium, total [as Cr]090
Ammonia & ammonium- total140
Whole Effluent Toxicity [WET] - P. promelas100
Whole Effluent Toxicity [WET] - D. magna100

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
September 7, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
July 1, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
June 5, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
June 5, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
May 28, 2026Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
December 15, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
September 2, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 23, 2025Dry-weather SSO, no discharge to waters of the U.S., not permit compliant, no endangermentEP6
August 15, 2025Dry-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, PR0025879.

Start the watch

How often?
  • One permit holder — $99/month
  • 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 PR0025879 there.

Nearby on the register

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

The Pay Desk is the free weekly executive pay briefing — one company at a time, every number traceable to a public filing.
We’ll email you a link to confirm. Unsubscribe any time.