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VI Waste Management Authority

Sewage treatment plant, St Thomas, the U.S. Virgin Islands. NPDES permit VI0039811 expired Sep 30, 2021; its limits still apply. Last 12 months: over a limit 22 times (last August 2026), 100 required values missing, 11 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form A monthly (27 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
13 values over a limit, 84 required values missing, 7 of 12 reports late

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

All 22 values over a limit
Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], minimum4.31 mg/L≥ 5.5 mg/L22%
November 2025Oxygen, dissolved [DO], minimum3.87 mg/L≥ 5.5 mg/L30%
November 2025Oxygen, dissolved [DO], minimum3.87 mg/L≥ 5.5 mg/L30%
November 2025pH, minimum6.4 SU≥ 7 SU—
December 2025Oxygen, dissolved [DO], minimum3.85 mg/L≥ 5.5 mg/L30%
December 2025pH, minimum6.5 SU≥ 7 SU—
January 2026Oxygen, dissolved [DO], minimum3.63 mg/L≥ 5.5 mg/L34%
January 2026pH, minimum6.2 SU≥ 7 SU—
March 2026pH, minimum6.8 SU≥ 7 SU—
April 2026Enterococci, daily maximum200 #/100mL≤ 110 #/100mL82%
April 2026Enterococci, monthly geometric mean89 #/100mL≤ 30 #/100mL197%
April 2026Oxygen, dissolved [DO], minimum5.04 mg/L≥ 5.5 mg/L8%
May 2026Oxygen, dissolved [DO], minimum4.66 mg/L≥ 5.5 mg/L15%
May 2026pH, minimum6.2 SU≥ 7 SU—
June 2026Enterococci, daily maximum200 #/100mL≤ 110 #/100mL82%
June 2026Enterococci, daily maximum200 #/100mL≤ 110 #/100mL82%
June 2026Oxygen, dissolved [DO], minimum5.42 mg/L≥ 5.5 mg/L1%
June 2026Oxygen, dissolved [DO], minimum5.42 mg/L≥ 5.5 mg/L1%
June 2026pH, minimum6.5 SU≥ 7 SU—
July 2026pH, minimum6.1 SU≥ 7 SU—
August 2026Oxygen, dissolved [DO], minimum5.07 mg/L≥ 5.5 mg/L8%
August 2026pH, minimum6.1 SU≥ 7 SU—

Limits in force (27)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademonthly averagereport only (deg C)all year
Temperature, water deg. centigradeweekly averagereport only (deg C)all year
Temperature, water deg. centigradedaily maximum≤ 32 deg Call year
Oxygen, dissolved [DO]minimum≥ 5.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
pHminimum≥ 7 SUall year
pHmaximum≤ 8.3 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Oil & Greaseweekly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (ug/L)all year
Phosphorus, total [as P]weekly averagereport only (ug/L)all year
Phosphorus, total [as P]daily maximum≤ 50 ug/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximum≤ .04 MGDall year
Chlorine, total residual4-day average≤ 7.5 ug/Lall year
Chlorine, total residual1-hour average≤ 13 ug/Lall year
Chlorine, total residualmaximumreport only (ug/L)all year
Enterococcidaily maximum≤ 110 #/100mLall year
Enterococcimonthly geometric mean≤ 30 #/100mLall year
BOD, 5-day, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VI0039811 · MCP: https://passage-data.com/mcp