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Electric Services, major discharger, Toa Baja, Puerto Rico. NPDES permit PR0001031 expired Mar 31, 2021; its limits still apply. Last 12 months: over a limit 10 times (last August 2026), 6 of 68 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Copper, total [as Cu], daily maximum | 3.88 ug/L | ≤ 3.73 ug/L | 4% |
| October 2025 | Solids, total suspended, monthly average | 32.3 mg/L | ≤ 30 mg/L | 8% |
| January 2026 | Solids, total suspended, monthly average | 33 mg/L | ≤ 30 mg/L | 10% |
| April 2026 | Cyanide, free available, daily maximum | 1.1 ug/L | ≤ 1 ug/L | 10% |
| April 2026 | Cyanide, free available, daily maximum | 2.9 ug/L | ≤ 1 ug/L | 190% |
| May 2026 | Solids, total suspended, monthly average | 37 mg/L | ≤ 30 mg/L | 23% |
| June 2026 | Cyanide, free available, daily maximum | 1.7 ug/L | ≤ 1 ug/L | 70% |
| June 2026 | Solids, total suspended, monthly average | 36 mg/L | ≤ 30 mg/L | 20% |
| August 2026 | Copper, total [as Cu], daily maximum | 4.61 ug/L | ≤ 3.73 ug/L | 24% |
| August 2026 | Cyanide, free available, daily maximum | 1.7 ug/L | ≤ 1 ug/L | 70% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | ≤ 40.4 deg C | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | ≤ 32.2 deg C | all year | 001 |
| Temperature, water deg. fahrenheit | daily maximum | report only (deg F) | all year | 001 |
| Turbidity | daily maximum | ≤ 10 NTU | all year | 001 |
| Turbidity | daily maximum | ≤ 10 NTU | all year | 001 |
| Color [PT-CO units] | daily maximum | report only (col unit (pc)) | all year | 001 |
| Color [PT-CO units] | daily maximum | report only (col unit (pc)) | all year | 001 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 4 mg/L | all year | 001 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 4 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 30 mg/L | all year | 001 |
| pH | minimum | ≥ 7.3 SU | all year | 001 |
| pH | minimum | ≥ 7.3 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| pH | maximum | ≤ 8.5 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 100 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | report only (mg/L) | all year | 001 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 001 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 001 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 001 |
| Arsenic, total [as As] | daily maximum | ≤ 36 ug/L | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (ug/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | ≤ 50.35 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 3.73 ug/L | all year | 001 |
| Copper, total [as Cu] | daily maximum | ≤ 3.73 ug/L | all year | 001 |
| Thallium, total [as Tl] | daily maximum | ≤ .47 ug/L | all year | 001 |
| Thallium, total [as Tl] | daily maximum | ≤ .47 ug/L | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | ≤ 8.28 ug/L | all year | 001 |
| Silver, total [as Ag] | daily maximum | ≤ 2.24 ug/L | all year | 001 |
| Pentachlorophenol | daily maximum | report only (ug/L) | all year | 001 |
| Pentachlorophenol | daily maximum | report only (ug/L) | all year | 001 |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (ug/L) | all year | 001 |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (ug/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ 652 MGD | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .74 MGD | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .2 mg/L | all year | 001 |
| Cyanide, free available | daily maximum | ≤ 1 ug/L | all year | 001 |
| Cyanide, free available | daily maximum | ≤ 1 ug/L | all year | 001 |
| Sulfide-hydrogen sulfide [undissociated] | daily maximum | ≤ 2 ug/L | all year | 001 |
| Sulfide-hydrogen sulfide [undissociated] | daily maximum | ≤ 2 ug/L | all year | 001 |
| Nitrogen, Total | daily maximum | report only (ug/L) | all year | 001 |
| Sulfates, total [as SO4] | daily maximum | ≤ 2800 mg/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .051 ug/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | ≤ .051 ug/L | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | ≤ 32.2 deg C | all year | 002 |
| Turbidity | daily maximum | ≤ 10 NTU | all year | 002 |
| Color [PT-CO units] | daily maximum | report only (col unit (pc)) | all year | 002 |
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 4 mg/L | all year | 002 |
| Oxygen demand, chem. [high level] [COD] | daily maximum | ≤ 100 mg/L | all year | 002 |
| pH | minimum | ≥ 7.3 SU | all year | 002 |
| pH | maximum | ≤ 8.5 SU | all year | 002 |
| Solids, settleable | daily maximum | report only (mL/L) | all year | 002 |
| Oil & Grease | daily maximum | report only (ug/L) | all year | 002 |
| Oil & Grease | monthly average | ≤ 15 mg/L | all year | 002 |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 002 |
| Nickel, total [as Ni] | daily maximum | report only (ug/L) | all year | 002 |
| Polychlorinated biphenyls [PCBs] | daily maximum | report only (ug/L) | all year | 002 |
| Priority Pollutants | daily maximum | report only (ug/L) | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 01A |
| pH | minimum | ≥ 6 SU | all year | 01A |
| pH | maximum | ≤ 9 SU | all year | 01A |
| pH | maximum | ≤ 9 SU | all year | 01A |
| Solids, total suspended | daily average | ≤ 30 mg/L | all year | 01A |
| Solids, total suspended | daily maximum | ≤ 100 mg/L | all year | 01A |
| Oil & Grease | daily average | ≤ 15 mg/L | all year | 01A |
| Oil & Grease | daily maximum | ≤ 20 mg/L | all year | 01A |
| Zinc, total [as Zn] | daily average | ≤ 1 mg/L | all year | 01A |
| Zinc, total [as Zn] | daily maximum | ≤ 1 mg/L | all year | 01A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 01A |
| Flow, in conduit or thru treatment plant | daily maximum | report only (gal/d) | all year | 01A |
| Chlorine, total residual | daily maximum | ≤ .2 mg/L | all year | 01A |
| Chlorine, free available | daily average | ≤ .2 mg/L | all year | 01A |
| Chlorine, free available | daily maximum | ≤ .5 mg/L | all year | 01A |
| Priority Pollutant Results | daily maximum | ≤ 0 pass=0;fail=1 | all year | 01A |
| pH | minimum | ≥ 6 SU | all year | 01C |
| pH | maximum | ≤ 9 SU | all year | 01C |
| Solids, total suspended | daily average | ≤ 51.1 kg/d | all year | 01C |
| Solids, total suspended | daily maximum | ≤ 170.4 kg/d | all year | 01C |
| Oil & Grease | daily average | ≤ 25.6 mg/L | all year | 01C |
| Oil & Grease | daily maximum | ≤ 34.1 mg/L | all year | 01C |
| Chromium, total [as Cr] | daily average | ≤ .2 mg/L | all year | 01C |
| Chromium, total [as Cr] | daily maximum | ≤ .2 mg/L | all year | 01C |
| Copper, total [as Cu] | daily average | ≤ 1.7 kg/d | all year | 01C |
| Copper, total [as Cu] | daily maximum | ≤ 1.7 kg/d | all year | 01C |
| Iron, total [as Fe] | daily average | ≤ 1.7 kg/d | all year | 01C |
| Iron, total [as Fe] | daily maximum | ≤ 1.7 kg/d | all year | 01C |
| Zinc, total [as Zn] | daily average | ≤ 1 mg/L | all year | 01C |
| Zinc, total [as Zn] | daily maximum | ≤ 1 mg/L | all year | 01C |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .74 MGD | all year | 01C |
| Chlorine, total residual | daily maximum | ≤ .2 mg/L | all year | 01C |
| Chlorine, free available | daily average | ≤ .2 mg/L | all year | 01C |
| Chlorine, free available | daily maximum | ≤ .5 mg/L | all year | 01C |
Cited limits by parameter: we hold no rule of Puerto Rico's own; the federal ones.
Same industry: the 5 Electric Services permits in Puerto Rico.
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On EPA ECHO: Facility report · DMR history
Your permit document is the final word. As JSON: /api/v1/permits/PR0001031 · MCP: https://passage-data.com/mcp