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V. I. Water & Power Authority

Electric Services, major discharger, St. Thomas, the U.S. Virgin Islands. NPDES permit VI0000060, in force until Oct 31, 2029. Last 12 months: over a limit 12 times (last August 2026), 107 required values missing, 58 of 92 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form A monthly (25 values), outfall 001 form B monthly (5 values), outfall 001 form T every 60 months (1 value), outfall 002 form A monthly (5 values), outfall 003 form A monthly (10 values), outfall 003 form B monthly (5 values), and 3 more forms
Last report on file
August 2026
Oct 2024 – Sep 2025
12 values over a limit, 233 required values missing, 70 of 89 reports late

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

Period endingParameterReportedLimitOver by
October 2025Arsenic, daily maximum8.9 ug/L≤ .14 ug/L6257%
October 2025Arsenic, monthly average8.9 ug/L≤ .28 ug/L3079%
October 2025Chlorine, total residual, daily maximum.02 mg/L≤ .013 mg/L54%
October 2025Chlorine, total residual, monthly average.02 mg/L≤ .0053 mg/L277%
October 2025Copper, dissolved [as Cu], daily maximum12.4 ug/L≤ 2.9 ug/L328%
October 2025Copper, dissolved [as Cu], monthly average12.4 ug/L≤ 5.8 ug/L114%
October 2025Nickel, dissolved [as Ni], daily maximum8.8 ug/L≤ 6.8 ug/L29%
October 2025Nitrogen, total [as N], daily maximum.59 mg/L≤ .207 mg/L185%
October 2025Phosphorus, total [as P], monthly average.072 mg/L≤ .05 mg/L44%
April 2026Oil & Grease, daily maximum37.9 mg/L≤ 10 mg/L279%
July 2026Oil & Grease, daily maximum14.6 mg/L≤ 10 mg/L46%
August 2026Oil & Grease, daily maximum26.9 mg/L≤ 10 mg/L169%

Limits in force (62)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly averagereport only (deg C)all year001
Temperature, water deg. centigradedaily maximumreport only (deg C)all year001
Temp. diff. between samp. & upstrm deg. C48-hour maximum≤ 11.1 deg Call year001
Temp. diff. between samp. & upstrm deg. Cmonthly maximum≤ 8.3 deg Call year001
pHminimum≥ 7 SUall year001
pHminimum≥ 7 SUall year001
pHmaximum≤ 8.3 SUall year001
pHmaximum≤ 8.3 SUall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Solids, total suspendeddaily maximum≤ 50 mg/Lall year001
Oil & Greasedaily maximum≤ 10 mg/Lall year001
Oil & Greasedaily maximum≤ 15 mg/Lall year001
Nitrogen, total [as N]daily maximum≤ .207 mg/Lall year001
Phosphorus, total [as P]monthly average≤ .05 mg/Lall year001
Phosphorus, total [as P]daily maximum≤ .1 mg/Lall year001
Copper, dissolved [as Cu]monthly average≤ 5.8 ug/Lall year001
Copper, dissolved [as Cu]daily maximum≤ 2.9 ug/Lall year001
Nickel, dissolved [as Ni]monthly average≤ 14 ug/Lall year001
Nickel, dissolved [as Ni]daily maximum≤ 6.8 ug/Lall year001
Chromium, hexavalent dissolved [as Cr]monthly average≤ 83 ug/Lall year001
Chromium, hexavalent dissolved [as Cr]daily maximum≤ 41 ug/Lall year001
Arsenicmonthly average≤ .28 ug/Lall year001
Arsenicdaily maximum≤ .14 ug/Lall year001
Whole effluent toxicitydaily maximumreport only (%)all year001
Priority Pollutantsdaily maximumreport only (ug/L)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .0053 mg/Lall year001
Chlorine, total residualdaily maximum≤ .013 mg/Lall year001
Oil and grease per productiondaily maximum≤ 15 mg/Lall year002
pHminimum≥ 6.7 SUall year002
pHmaximum≤ 8.5 SUall year002
Solids, total suspendeddaily maximum≤ 50 mg/Lall year002
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year002
Oil and grease per productiondaily maximum≤ 15 mg/Lall year003
pHminimum≥ 6.7 SUall year003
pHminimum≥ 6.7 SUall year003
pHmaximum≤ 8.5 SUall year003
pHmaximum≤ 8.5 SUall year003
Solids, total suspendeddaily maximum≤ 20 mg/Lall year003
Solids, total suspendeddaily maximum≤ 50 mg/Lall year003
Oil & Greasedaily maximum≤ 10 mg/Lall year003
Copper, total [as Cu]monthly average≤ 2.9 mg/Lall year003
Copper, total [as Cu]daily maximum≤ 5.8 mg/Lall year003
Iron, total [as Fe]daily maximum≤ 1 mg/Lall year003
Aluminum, total [as Al]daily maximum≤ 3 mg/Lall year003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year003
Oil and grease per productiondaily maximum≤ 15 mg/Lall year004
pHminimum≥ 6.7 SUall year004
pHmaximum≤ 8.5 SUall year004
Solids, total suspendeddaily maximum≤ 50 mg/Lall year004
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year004
Oil and grease per productiondaily maximum≤ 15 mg/Lall year005
pHminimum≥ 6.7 SUall year005
pHmaximum≤ 8.5 SUall year005
Solids, total suspendeddaily maximum≤ 50 mg/Lall year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005

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/VI0000060 · MCP: https://passage-data.com/mcp