Passage Data · Check a report · Use it from your AI

Dynegy Midwest Generation LLC

Electric Services, major discharger, Havana, Illinois. NPDES permit IL0001571 expired Jun 30, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 002 form 0 monthly (6 values), outfall 005 form 0 monthly (6 values), outfall 002 form S twice a year, outfall 005 form S twice a year
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 28 reports late

Limits in force (100)

ParameterStatisticLimitMonthsOutfall
pHdaily minimum≥ 6 SUall year002
pHdaily maximum≤ 9 SUall year002
Solids, total suspended30-day average≤ 15 mg/Lall year002
Solids, total suspendeddaily maximum≤ 30 mg/Lall year002
Oil & Greasedaily maximumreport only (mg/L)all year002
Oil & Greasedaily maximumreport only (mg/L)all year002
Cyanide, weak acid, dissociabledaily maximumreport only (ug/L)all year002
Cyanide, weak acid, dissociabledaily maximumreport only (ug/L)all year002
Cyanide, total [as CN]daily maximumreport only (ug/L)all year002
Cyanide, total [as CN]daily maximumreport only (ug/L)all year002
Fluoride, total [as F]daily maximumreport only (mg/L)all year002
Fluoride, total [as F]daily maximumreport only (mg/L)all year002
Arsenic, total [as As]daily maximumreport only (mg/L)all year002
Arsenic, total [as As]daily maximumreport only (mg/L)all year002
Barium, total [as Ba]daily maximumreport only (mg/L)all year002
Barium, total [as Ba]daily maximumreport only (mg/L)all year002
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year002
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year002
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year002
Chromium, total [as Cr]daily maximumreport only (mg/L)all year002
Chromium, total [as Cr]daily maximumreport only (mg/L)all year002
Copper, total [as Cu]daily maximumreport only (mg/L)all year002
Copper, total [as Cu]daily maximumreport only (mg/L)all year002
Iron, total [as Fe]daily maximumreport only (mg/L)all year002
Iron, total [as Fe]daily maximumreport only (mg/L)all year002
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year002
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year002
Lead, total [as Pb]daily maximumreport only (mg/L)all year002
Lead, total [as Pb]daily maximumreport only (mg/L)all year002
Manganese, total [as Mn]daily maximumreport only (mg/L)all year002
Manganese, total [as Mn]daily maximumreport only (mg/L)all year002
Thallium, total [as Tl]daily maximumreport only (mg/L)all year002
Thallium, total [as Tl]daily maximumreport only (mg/L)all year002
Nickel, total [as Ni]daily maximumreport only (mg/L)all year002
Nickel, total [as Ni]daily maximumreport only (mg/L)all year002
Silver, total [as Ag]daily maximumreport only (mg/L)all year002
Silver, total [as Ag]daily maximumreport only (mg/L)all year002
Zinc, total [as Zn]daily maximumreport only (mg/L)all year002
Zinc, total [as Zn]daily maximumreport only (mg/L)all year002
Antimony, total [as Sb]daily maximumreport only (mg/L)all year002
Antimony, total [as Sb]daily maximumreport only (mg/L)all year002
Selenium, total [as Se]daily maximumreport only (mg/L)all year002
Selenium, total [as Se]daily maximumreport only (mg/L)all year002
Phenolics, total recoverabledaily maximumreport only (mg/L)all year002
Phenolics, total recoverabledaily 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 maximumreport only (MGD)all year002
Mercury, total [as Hg]quarterly averagereport only (ng/L)Jan, Apr, Jul, Oct002
Mercury, total [as Hg]quarterly maximumreport only (ng/L)Jan, Apr, Jul, Oct002
pHdaily minimum≥ 6 SUall year005
pHdaily maximum≤ 9 SUall year005
Solids, total suspended30-day average≤ 15 mg/Lall year005
Solids, total suspendeddaily maximum≤ 30 mg/Lall year005
Oil & Greasedaily maximumreport only (mg/L)all year005
Oil & Greasedaily maximumreport only (mg/L)all year005
Cyanide, weak acid, dissociabledaily maximumreport only (ug/L)all year005
Cyanide, weak acid, dissociabledaily maximumreport only (ug/L)all year005
Cyanide, total [as CN]daily maximumreport only (ug/L)all year005
Cyanide, total [as CN]daily maximumreport only (ug/L)all year005
Fluoride, total [as F]daily maximumreport only (mg/L)all year005
Fluoride, total [as F]daily maximumreport only (mg/L)all year005
Arsenic, total [as As]daily maximumreport only (mg/L)all year005
Arsenic, total [as As]daily maximumreport only (mg/L)all year005
Barium, total [as Ba]daily maximumreport only (mg/L)all year005
Barium, total [as Ba]daily maximumreport only (mg/L)all year005
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year005
Cadmium, total [as Cd]daily maximumreport only (mg/L)all year005
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year005
Chromium, hexavalent [as Cr]daily maximumreport only (mg/L)all year005
Chromium, total [as Cr]daily maximumreport only (mg/L)all year005
Chromium, total [as Cr]daily maximumreport only (mg/L)all year005
Copper, total [as Cu]daily maximumreport only (mg/L)all year005
Copper, total [as Cu]daily maximumreport only (mg/L)all year005
Iron, total [as Fe]daily maximumreport only (mg/L)all year005
Iron, total [as Fe]daily maximumreport only (mg/L)all year005
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year005
Iron, dissolved [as Fe]daily maximumreport only (mg/L)all year005
Lead, total [as Pb]daily maximumreport only (mg/L)all year005
Lead, total [as Pb]daily maximumreport only (mg/L)all year005
Manganese, total [as Mn]daily maximumreport only (mg/L)all year005
Manganese, total [as Mn]daily maximumreport only (mg/L)all year005
Thallium, total [as Tl]daily maximumreport only (mg/L)all year005
Thallium, total [as Tl]daily maximumreport only (mg/L)all year005
Nickel, total [as Ni]daily maximumreport only (mg/L)all year005
Nickel, total [as Ni]daily maximumreport only (mg/L)all year005
Silver, total [as Ag]daily maximumreport only (mg/L)all year005
Silver, total [as Ag]daily maximumreport only (mg/L)all year005
Zinc, total [as Zn]daily maximumreport only (mg/L)all year005
Zinc, total [as Zn]daily maximumreport only (mg/L)all year005
Antimony, total [as Sb]daily maximumreport only (mg/L)all year005
Antimony, total [as Sb]daily maximumreport only (mg/L)all year005
Selenium, total [as Se]daily maximumreport only (mg/L)all year005
Selenium, total [as Se]daily maximumreport only (mg/L)all year005
Phenolics, total recoverabledaily maximumreport only (mg/L)all year005
Phenolics, total recoverabledaily maximumreport only (mg/L)all year005
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year005
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year005
Mercury, total [as Hg]quarterly averagereport only (ng/L)Jan, Apr, Jul, Oct005
Mercury, total [as Hg]quarterly maximumreport only (ng/L)Jan, Apr, Jul, Oct005

How strict are these limits?

Cited limits by parameter: Illinois's rules and the federal ones.

Same industry: the 45 Electric Services permits in Illinois.

Check this month's numbers Email me before each report is due

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0001571 · MCP: https://passage-data.com/mcp