NPDES PR0025411 · Clean Water Act
PRASA RIO PRIETO WTP, Yauco, PR: NPDES PR0025411 discharge permit, effluent exceedances, inspections, penalties
PRASA RIO PRIETO WTP, Yauco, Puerto Rico: Individual permit PR0025411, held by PRASA RIO PRIETO YAUCO FLT PLT; Administratively continued; issued September 16, 2013, term to November 30, 2018; discharges to PRIETO RIVER.
1 of the 27 pollutants listed for NPDES PR0025411 have no violation or effluent exceedance.
- Chlorine, total residual: 1 limit, 127 violations of any kind, 110 effluent exceedances, latest May 31, 2020, largest 809% over the limit.
- Copper, total [as Cu]: 3 limits, 101 violations of any kind, 80 effluent exceedances, latest July 31, 2026, largest 8,320% over the limit.
- Lead, total [as Pb]: 2 limits, 56 violations of any kind, 48 effluent exceedances, latest December 31, 2014, largest 2,500% over the limit.
- Phosphorus, total [as P]: 3 limits, 62 violations of any kind, 43 effluent exceedances, latest April 30, 2025, largest 15,200% over the limit.
- Turbidity: 2 limits, 47 violations of any kind, 26 effluent exceedances, latest January 31, 2016.
- Flow, in conduit or thru treatment plant: 3 limits, 38 violations of any kind, 17 effluent exceedances, latest September 30, 2009, largest 425% over the limit.
- pH: 2 limits, 54 violations of any kind, 16 effluent exceedances, latest July 31, 2013.
- BOD, 5-day, 20 deg. C: 2 limits, 31 violations of any kind, 13 effluent exceedances, latest August 31, 2019, largest 39,900% over the limit.
- Sulfide-hydrogen sulfide [undissociated]: 0 limits, 12 violations of any kind, 12 effluent exceedances, latest November 30, 2009, largest 99,900% over the limit.
- Manganese, total [as Mn]: 0 limits, 12 violations of any kind, 9 effluent exceedances, latest September 30, 2000, largest 766% over the limit.
- Oxygen, dissolved [DO]: 1 limit, 28 violations of any kind, 8 effluent exceedances, latest April 30, 2020, largest 54% over the limit.
- Arsenic, total [as As]: 0 limits, 11 violations of any kind, 8 effluent exceedances, latest September 30, 2000, largest 1,622% over the limit.
- Mercury, total [as Hg]: 2 limits, 25 violations of any kind, 7 effluent exceedances, latest April 30, 2025, largest 15,150% over the limit.
- Phenolics, total recoverable: 0 limits, 10 violations of any kind, 7 effluent exceedances, latest September 30, 2000, largest 11,000% over the limit.
- Zinc, total [as Zn]: 0 limits, 26 violations of any kind, 6 effluent exceedances, latest January 31, 2006, largest 112% over the limit.
- Color [PT-CO units]: 1 limit, 24 violations of any kind, 5 effluent exceedances, latest December 31, 2018.
- Sulfide, total [as S]: 0 limits, 8 violations of any kind, 5 effluent exceedances, latest August 31, 2000, largest 1,200% over the limit.
- Ammonia & ammonium- total: 0 limits, 10 violations of any kind, 2 effluent exceedances, latest June 30, 2003, largest 42,890% over the limit.
- Cyanide, total [as CN]: 0 limits, 4 violations of any kind, 1 effluent exceedance, latest April 30, 2000, largest 15% over the limit.
- Coliform, fecal general: 0 limits, 25 violations of any kind.
- Oil & Grease: 0 limits, 20 violations of any kind.
- Temperature, water deg. centigrade: 1 limit, 19 violations of any kind.
- Solids, settleable: 1 limit, 19 violations of any kind.
- Nitrogen, ammonia, total [as NH3]: 1 limit, 17 violations of any kind.
- Nitrite + Nitrate total [as N]: 0 limits, 8 violations of any kind.
- Fluoride, total [as F]: 0 limits, 6 violations of any kind.
- Sulfate, total [as SO4]: 2 limits.
- June 29, 2017: Management Practice Violations - Improper Operation and Maintenance (EP6).
PRASA RIO PRIETO WTP among its neighbors
6 discharge permits are in the Rio Yauco at mouth subwatershed (HUC 210100040202); PR0025411 is one. Its county: 6, 0 major; PR0025411 is minor permit.
Other permits in the Rio Yauco at mouth subwatershed (HUC 210100040202)
- PFC LUIS F GARCIA OLIVARES USARC, Yauco: PRNOEJ023, minor, term to 2028-02-14
- PRASA YAUCO STP, Yauco: PRL021661, minor, term to 2025-12-31
- PRASA YAUCO WTP, Yauco: PR0022675, minor, term to 2022-06-30
- SARTORIUS STEDIM FILTERS, INC -ECO SITE, Yauco: PRR05J00Y, minor, term to 2026-02-28
- SARTORIUS STEDIM FILTERS, INC. - MB, Yauco: PRR053326, minor, term to 2020-06-03
Identity
| Facility | PRASA RIO PRIETO WTP |
|---|---|
| Permittee | PRASA RIO PRIETO YAUCO FLT PLT |
| NPDES ID | PR0025411 |
| Status | Administratively continued |
| Type | Individual permit |
| Class | Minor |
| Facility type | Non-POTW |
| Issued | September 16, 2013 |
| Expires | November 30, 2018 |
| Address | Yauco, PR 00768 |
| Receiving water | PRIETO RIVER |
| Receiving water impaired | 303(D) Listed |
| Subwatershed | Rio Yauco at mouth (HUC 210100040202) |
| SIC | 4941 – Water Supply |
NPDES PR0025411: effluent limits and exceedances
PRASA RIO PRIETO WTP (NPDES PR0025411): 27 pollutants on file, 15 limited; 26 with a violation of any kind, 19 with an exceedance.
| Pollutant | Limits | Violations | Exceedances | Latest | Largest, as filed |
|---|---|---|---|---|---|
| Chlorine, total residual | 1 | 127 | 110 | May 31, 2020 | 809% over the limit |
| Copper, total [as Cu] | 3 | 101 | 80 | July 31, 2026 | 8,320% over the limit |
| Lead, total [as Pb] | 2 | 56 | 48 | December 31, 2014 | 2,500% over the limit |
| Phosphorus, total [as P] | 3 | 62 | 43 | April 30, 2025 | 15,200% over the limit |
| Turbidity | 2 | 47 | 26 | January 31, 2016 | |
| Flow, in conduit or thru treatment plant | 3 | 38 | 17 | September 30, 2009 | 425% over the limit |
| pH | 2 | 54 | 16 | July 31, 2013 | |
| BOD, 5-day, 20 deg. C | 2 | 31 | 13 | August 31, 2019 | 39,900% over the limit |
| Sulfide-hydrogen sulfide [undissociated] | 0 | 12 | 12 | November 30, 2009 | 99,900% over the limit |
| Manganese, total [as Mn] | 0 | 12 | 9 | September 30, 2000 | 766% over the limit |
| Oxygen, dissolved [DO] | 1 | 28 | 8 | April 30, 2020 | 54% over the limit |
| Arsenic, total [as As] | 0 | 11 | 8 | September 30, 2000 | 1,622% over the limit |
| Mercury, total [as Hg] | 2 | 25 | 7 | April 30, 2025 | 15,150% over the limit |
| Phenolics, total recoverable | 0 | 10 | 7 | September 30, 2000 | 11,000% over the limit |
| Zinc, total [as Zn] | 0 | 26 | 6 | January 31, 2006 | 112% over the limit |
| Color [PT-CO units] | 1 | 24 | 5 | December 31, 2018 | |
| Sulfide, total [as S] | 0 | 8 | 5 | August 31, 2000 | 1,200% over the limit |
| Ammonia & ammonium- total | 0 | 10 | 2 | June 30, 2003 | 42,890% over the limit |
| Cyanide, total [as CN] | 0 | 4 | 1 | April 30, 2000 | 15% over the limit |
| Coliform, fecal general | 0 | 25 | 0 | ||
| Oil & Grease | 0 | 20 | 0 | ||
| Temperature, water deg. centigrade | 1 | 19 | 0 | ||
| Solids, settleable | 1 | 19 | 0 | ||
| Nitrogen, ammonia, total [as NH3] | 1 | 17 | 0 | ||
| Nitrite + Nitrate total [as N] | 0 | 8 | 0 | ||
| Fluoride, total [as F] | 0 | 6 | 0 | ||
| Sulfate, total [as SO4] | 2 | 0 | 0 |
NPDES PR0025411: inspections, violations and enforcement
NPDES PR0025411: 1 single-event violation
| Date | What EPA recorded | Agency |
|---|---|---|
| June 29, 2017 | Management Practice Violations - Improper Operation and Maintenance | EP6 |
NPDES PR0025411 (PRASA RIO PRIETO WTP): no inspection, formal enforcement action and informal enforcement action on file.
Watch NPDES PR0025411
NPDES PR0025411: one email when its EPA record changes — $99/month.
Permits near NPDES PR0025411
NPDES PR0025411: 27 pollutant rows, 1 dated events; ICIS-NPDES download, loaded October 14, 2026.