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Sewerage Systems, St. Thomas, the U.S. Virgin Islands. NPDES permit VI0039900 expired Feb 28, 2026; its limits still apply. Last 12 months: over a limit 23 times (last August 2026), 10 of 30 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | 002 | Flow, in conduit or thru treatment plant, daily maximum | .017 MGD | ≤ .015 MGD | 13% |
| November 2025 | 002 | BOD, 5-day, percent removal, monthly average minimum | 72 % | ≥ 85 % | 87% |
| November 2025 | 002 | Enterococci, geometric mean | 226.84 #/100mL | ≤ 30 #/100mL | 656% |
| December 2025 | 002 | pH, minimum | 6.5 SU | ≥ 7 SU | — |
| January 2026 | 001 | pH, minimum | 6.98 SU | ≥ 7 SU | — |
| January 2026 | 002 | Enterococci, geometric mean | 34.93 #/100mL | ≤ 30 #/100mL | 16% |
| January 2026 | 002 | Flow, in conduit or thru treatment plant, daily maximum | .016 MGD | ≤ .015 MGD | 7% |
| January 2026 | 002 | pH, minimum | 2.68 SU | ≥ 7 SU | — |
| February 2026 | 002 | BOD, 5-day, percent removal, monthly average minimum | 75 % | ≥ 85 % | 67% |
| February 2026 | 002 | pH, minimum | 5.14 SU | ≥ 7 SU | — |
| March 2026 | 002 | pH, minimum | 5.32 SU | ≥ 7 SU | — |
| April 2026 | 002 | Enterococci, geometric mean | 30.5 #/100mL | ≤ 30 #/100mL | 2% |
| April 2026 | 002 | Flow, in conduit or thru treatment plant, daily maximum | .018 MGD | ≤ .015 MGD | 20% |
| April 2026 | 002 | pH, minimum | 5.42 SU | ≥ 7 SU | — |
| May 2026 | 002 | BOD, 5-day, percent removal, monthly average minimum | 78 % | ≥ 85 % | 47% |
| May 2026 | 002 | pH, minimum | 6.42 SU | ≥ 7 SU | — |
| June 2026 | 002 | Flow, in conduit or thru treatment plant, daily maximum | .0215 MGD | ≤ .015 MGD | 43% |
| June 2026 | 002 | pH, minimum | 5.51 SU | ≥ 7 SU | — |
| July 2026 | 002 | pH, minimum | 5.65 SU | ≥ 7 SU | — |
| August 2026 | 002 | BOD, 5-day, percent removal, monthly average minimum | 77 % | ≥ 85 % | 53% |
| August 2026 | 002 | Flow, in conduit or thru treatment plant, daily maximum | .0259 MGD | ≤ .015 MGD | 73% |
| August 2026 | 002 | Solids, total suspended, monthly average | 31.3 mg/L | ≤ 30 mg/L | 4% |
| August 2026 | 002 | pH, minimum | 6.81 SU | ≥ 7 SU | — |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Temperature, water deg. centigrade | daily maximum | ≤ 32 deg C | all year | 001 |
| Turbidity | maximum | ≤ 3 NTU | all year | 001 |
| pH | minimum | ≥ 7 SU | all year | 001 |
| pH | maximum | ≤ 8.3 SU | all year | 001 |
| Salinity | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .03 MGD | all year | 001 |
| Solids, total dissolved- 180 deg. C | minimum | ≥ 5.5 mg/L | all year | 001 |
| Temperature, water deg. centigrade | daily maximum | ≤ 32 deg C | all year | 002 |
| BOD, 5-day, 20 deg. C | weekly average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 002 |
| pH | minimum | ≥ 7 SU | all year | 002 |
| pH | maximum | ≤ 8.3 SU | all year | 002 |
| Solids, total suspended | weekly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 002 |
| Nitrogen, total [as N] | monthly average | report only (ug/L) | all year | 002 |
| Nitrogen, total [as N] | daily maximum | report only (ug/L) | all year | 002 |
| Phosphorous, total organic [as P] | monthly average | report only (ug/L) | all year | 002 |
| Phosphorous, total organic [as P] | daily maximum | report only (ug/L) | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | ≤ .015 MGD | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 1 ug/L | all year | 002 |
| Enterococci | 10% of samples | ≤ 110 #/100mL | all year | 002 |
| Enterococci | geometric mean | ≤ 30 #/100mL | all year | 002 |
| BOD, 5-day, percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
| Solids, suspended percent removal | monthly average minimum | ≥ 85 % | all year | 002 |
Cited limits by parameter: we hold no rule of the U.S. Virgin Islands's own; the federal ones.
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Your permit document is the final word. As JSON: /api/v1/permits/VI0039900 · MCP: https://passage-data.com/mcp