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Mahogany Run

Nonclassifiable Establishments, St. Thomas, the U.S. Virgin Islands. NPDES permit VI0040614 expired Sep 30, 2021; its limits still apply. Last 12 months: over a limit 6 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A quarterly (6 values), outfall 002 form A quarterly (18 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 3 of 8 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
December 2025BOD, 5-day, percent removal, minimum81 %≥ 85 %27%
December 2025Solids, suspended percent removal, minimum42 %≥ 85 %287%
March 2026Solids, suspended percent removal, minimum83 %≥ 85 %13%
March 2026Solids, total suspended, monthly average47 mg/L≤ 30 mg/L57%
June 2026BOD, 5-day, percent removal, minimum78 %≥ 85 %47%
June 2026Solids, suspended percent removal, minimum81 %≥ 85 %27%

Limits in force (24)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximum≤ 32 deg Call year001
pHminimum≥ 7 SUall year001
pHmaximum≤ 8.3 SUall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximum≤ .5 MGDall year001
Temperature, water deg. centigradedaily maximum≤ 32 deg Call year002
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year002
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year002
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year002
pHminimum≥ 7 SUall year002
pHdaily maximum≤ 8.3 SUall year002
Solids, total suspendedmonthly average≤ 30 mg/Lall year002
Solids, total suspendedweekly average≤ 45 mg/Lall year002
Solids, total suspendedmonthly averagereport only (mg/L)all year002
Oil & Greasedaily maximumreport only (mg/L)all year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantdaily maximum≤ .05 MGDall year002
Chlorine, total residualmaximumreport only (mg/L)all year002
Chlorine, total residualdaily maximum≤ 1 mg/Lall year002
Enterococcidaily maximum≤ 110 #/100mLall year002
Enterococcimonthly geometric mean≤ 30 #/100mLall year002
BOD, 5-day, percent removalminimum≥ 85 %all year002
Solids, suspended percent removalminimum≥ 85 %all year002

How strict are these limits?

Cited limits by parameter: we hold no rule of the U.S. Virgin Islands's own; the federal ones.

Same industry: the 5 Nonclassifiable Establishments permits in the U.S. Virgin Islands.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VI0040614 · MCP: https://passage-data.com/mcp