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VI Waste Management Authority

Sewage treatment plant, St Thomas, the U.S. Virgin Islands. NPDES permit VI0020133 expired Sep 30, 2021; its limits still apply. Last 12 months: over a limit 88 times (last August 2026), 71 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
73 values over a limit, 60 required values missing, 8 of 12 reports late

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

All 88 values over a limit
Period endingParameterReportedLimitOver by
October 2025Oxygen, dissolved [DO], minimum.62 mg/L≥ 5.5 mg/L89%
October 2025pH, minimum6.6 SU≥ 7 SU—
November 2025Oxygen, dissolved [DO], minimum1.74 mg/L≥ 5.5 mg/L68%
November 2025pH, minimum6.68 SU≥ 7 SU—
December 2025Flow, in conduit or thru treatment plant, daily maximum1.129 MGD≤ .1 MGD1029%
December 2025Flow, in conduit or thru treatment plant, daily maximum1.129 MGD≤ .1 MGD1029%
December 2025Oxygen, dissolved [DO], minimum1.67 mg/L≥ 5.5 mg/L70%
December 2025Oxygen, dissolved [DO], minimum1.67 mg/L≥ 5.5 mg/L70%
December 2025pH, minimum6.67 SU≥ 7 SU—
January 2026BOD, 5-day, 20 deg. C, monthly average407.4 mg/L≤ 30 mg/L1258%
January 2026BOD, 5-day, 20 deg. C, weekly average407.4 mg/L≤ 45 mg/L805%
January 2026BOD, 5-day, percent removal, monthly average minimum2.5 %≥ 85 %550%
January 2026Enterococci, maximum976 #/100mL≤ 110 #/100mL787%
January 2026Enterococci, monthly geometric mean219 #/100mL≤ 30 #/100mL630%
January 2026Oxygen, dissolved [DO], minimum1.29 mg/L≥ 5.5 mg/L77%
January 2026Solids, suspended percent removal, monthly average minimum79.6 %≥ 85 %36%
January 2026pH, minimum6.12 SU≥ 7 SU—
February 2026BOD, 5-day, 20 deg. C, monthly average291 mg/L≤ 30 mg/L870%
February 2026BOD, 5-day, 20 deg. C, weekly average291 mg/L≤ 45 mg/L547%
February 2026BOD, 5-day, percent removal, monthly average minimum0 %≥ 85 %567%
February 2026Enterococci, maximum1660 #/100mL≤ 110 #/100mL1409%
February 2026Enterococci, monthly geometric mean280 #/100mL≤ 30 #/100mL833%
February 2026Oxygen, dissolved [DO], minimum1.47 mg/L≥ 5.5 mg/L73%
February 2026Solids, suspended percent removal, monthly average minimum44.5 %≥ 85 %270%
February 2026Solids, total suspended, monthly average55.5 mg/L≤ 30 mg/L85%
February 2026Solids, total suspended, weekly average55.5 mg/L≤ 45 mg/L23%
February 2026pH, minimum6.36 SU≥ 7 SU—
March 2026BOD, 5-day, 20 deg. C, monthly average285 mg/L≤ 30 mg/L850%
March 2026BOD, 5-day, 20 deg. C, weekly average285 mg/L≤ 45 mg/L533%
March 2026BOD, 5-day, percent removal, monthly average minimum36.3 %≥ 85 %325%
March 2026Enterococci, maximum2000 #/100mL≤ 110 #/100mL1718%
March 2026Enterococci, monthly geometric mean1468 #/100mL≤ 30 #/100mL4793%
March 2026Oxygen, dissolved [DO], minimum1.69 mg/L≥ 5.5 mg/L69%
March 2026Solids, suspended percent removal, monthly average minimum68.3 %≥ 85 %111%
March 2026Solids, total suspended, monthly average47.5 mg/L≤ 30 mg/L58%
March 2026Solids, total suspended, weekly average47.5 mg/L≤ 45 mg/L6%
March 2026pH, minimum6.35 SU≥ 7 SU—
April 2026BOD, 5-day, 20 deg. C, monthly average214.3 mg/L≤ 30 mg/L614%
April 2026BOD, 5-day, 20 deg. C, weekly average214.3 mg/L≤ 45 mg/L376%
April 2026BOD, 5-day, percent removal, monthly average minimum0 %≥ 85 %567%
April 2026Enterococci, maximum9900 #/100mL≤ 110 #/100mL8900%
April 2026Enterococci, monthly geometric mean965 #/100mL≤ 30 #/100mL3117%
April 2026Oxygen, dissolved [DO], minimum.23 mg/L≥ 5.5 mg/L96%
April 2026Solids, suspended percent removal, monthly average minimum21.2 %≥ 85 %425%
April 2026Solids, total suspended, monthly average65.8 mg/L≤ 30 mg/L119%
April 2026Solids, total suspended, weekly average65.8 mg/L≤ 45 mg/L46%
April 2026pH, minimum6.36 SU≥ 7 SU—
May 2026BOD, 5-day, 20 deg. C, monthly average215.8 mg/L≤ 30 mg/L619%
May 2026BOD, 5-day, 20 deg. C, weekly average215.8 mg/L≤ 45 mg/L380%
May 2026BOD, 5-day, percent removal, monthly average minimum67.8 %≥ 85 %115%
May 2026Enterococci, maximum1270 #/100mL≤ 110 #/100mL1055%
May 2026Enterococci, monthly geometric mean31 #/100mL≤ 30 #/100mL3%
May 2026Oxygen, dissolved [DO], minimum.96 mg/L≥ 5.5 mg/L83%
May 2026Solids, suspended percent removal, monthly average minimum76.9 %≥ 85 %54%
May 2026Solids, total suspended, monthly average49.9 mg/L≤ 30 mg/L66%
May 2026Solids, total suspended, weekly average49.9 mg/L≤ 45 mg/L11%
May 2026pH, minimum5.56 SU≥ 7 SU—
June 2026BOD, 5-day, 20 deg. C, monthly average208.6 mg/L≤ 30 mg/L595%
June 2026BOD, 5-day, 20 deg. C, weekly average208.6 mg/L≤ 45 mg/L364%
June 2026BOD, 5-day, percent removal, monthly average minimum30.5 %≥ 85 %363%
June 2026Enterococci, maximum930 #/100mL≤ 110 #/100mL745%
June 2026Enterococci, monthly geometric mean344 #/100mL≤ 30 #/100mL1047%
June 2026Oxygen, dissolved [DO], minimum.82 mg/L≥ 5.5 mg/L85%
June 2026Solids, suspended percent removal, monthly average minimum65.6 %≥ 85 %129%
June 2026Solids, total suspended, monthly average40.1 mg/L≤ 30 mg/L34%
June 2026pH, minimum6.44 SU≥ 7 SU—
July 2026BOD, 5-day, 20 deg. C, monthly average199.3 mg/L≤ 30 mg/L564%
July 2026BOD, 5-day, 20 deg. C, weekly average199.3 mg/L≤ 45 mg/L343%
July 2026BOD, 5-day, percent removal, monthly average minimum52.1 %≥ 85 %219%
July 2026Enterococci, maximum1970 #/100mL≤ 110 #/100mL1691%
July 2026Enterococci, monthly geometric mean281 #/100mL≤ 30 #/100mL837%
July 2026Oxygen, dissolved [DO], minimum.11 mg/L≥ 5.5 mg/L98%
July 2026Solids, suspended percent removal, monthly average minimum84.6 %≥ 85 %3%
July 2026Solids, total suspended, monthly average54.5 mg/L≤ 30 mg/L82%
July 2026Solids, total suspended, weekly average54.5 mg/L≤ 45 mg/L21%
July 2026Temperature, water deg. centigrade, daily maximum32.1 deg C≤ 32 deg C0%
July 2026pH, minimum6.39 SU≥ 7 SU—
August 2026BOD, 5-day, 20 deg. C, monthly average210.3 mg/L≤ 30 mg/L601%
August 2026BOD, 5-day, 20 deg. C, weekly average210.3 mg/L≤ 45 mg/L367%
August 2026BOD, 5-day, percent removal, monthly average minimum25.3 %≥ 85 %398%
August 2026Enterococci, maximum1630 #/100mL≤ 110 #/100mL1382%
August 2026Enterococci, monthly geometric mean51 #/100mL≤ 30 #/100mL70%
August 2026Oxygen, dissolved [DO], minimum.2 mg/L≥ 5.5 mg/L96%
August 2026Solids, suspended percent removal, monthly average minimum34.9 %≥ 85 %334%
August 2026Solids, total suspended, monthly average57.2 mg/L≤ 30 mg/L91%
August 2026Solids, total suspended, weekly average57.2 mg/L≤ 45 mg/L27%
August 2026Temperature, water deg. centigrade, daily maximum32.2 deg C≤ 32 deg C1%
August 2026pH, minimum6.34 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. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly 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≤ .1 MGDall year
Chlorine, total residualmaximumreport only (ug/L)all year
Chlorine, total residual4-day average≤ 7.5 ug/Lall year
Chlorine, total residual1-hour average≤ 13 ug/Lall year
Enterococcimaximum≤ 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/VI0020133 · MCP: https://passage-data.com/mcp