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ERCO Worldwide (USA) Inc. - Port Edwards

Alkalies And Chlorine, major discharger, Port Edwards, Wisconsin. NPDES permit WI0003565, in force until Mar 31, 2028. Last 12 months: no values over a limit, 42 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (14 values), outfall 101 form A monthly (10 values), outfall 102 form A monthly (4 values), outfall 103 form A monthly (2 values), outfall 105 form A monthly (1 value), outfall 107 form A monthly (3 values), and 3 more forms
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
3 values over a limit, 83 required values missing, 10 of 58 reports late

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly maximumreport only (deg F)all year001
pHdaily minimum≥ 4 SUall year001
pHdaily maximum≤ 11 SUall year001
Chloride [as Cl]monthly average≤ 1500 mg/Lall year001
Chloride [as Cl]daily maximum≤ 1500 mg/Lall year001
Chloride [as Cl]daily maximum≤ 74000 lb/dall year001
Oxidants, total residualmonthly average≤ 38 ug/Lall year001
Oxidants, total residualdaily maximum≤ 38 ug/Lall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year001
Mercury, total recoverabledaily maximum≤ 42 ng/Lall year001
Mercury, total recoverabledaily maximum≤ 1.19 g/dall year001
pH range excursions, > 60 minutesdaily maximum≤ 0 occur/dall year001
pH range excursions, monthly total accummonthly total≤ 446 minall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year101
Solids, total suspendedmonthly maximumreport only (mg/L)all year101
Solids, total suspendedmonthly average≤ 62 kg/dall year101
Solids, total suspendeddaily maximum≤ 124 kg/dall year101
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year101
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year101
Chlorine, total residualmonthly maximumreport only (ug/L)all year101
Chlorine, total residualmonthly average≤ 369 g/dall year101
Chlorine, total residualdaily maximum≤ 622 g/dall year101
Mercury, total recoverablemonthly maximumreport only (ng/L)all year101
Solids, total suspendedmonthly averagereport only (mg/L)all year102
Solids, total suspendedmonthly maximumreport only (mg/L)all year102
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year102
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year102
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year103
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year103
Mercury, total recoverablemonthly maximumreport only (ng/L)all year105
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year107
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year107
Mercury, total recoverablemonthly maximumreport only (ng/L)all year107
Mercury, total recoverablemonthly maximumreport only (ng/L)all year108
Solids, total suspendedmonthly averagereport only (mg/L)all year701
Solids, total suspendedmonthly maximumreport only (mg/L)all year701
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year701
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all year701
Mercury, total recoverablequarterly maximumreport only (ng/L)all year701
pH range excursions, > 60 minutesmonthly averagereport only (occur/d)all year701
pH range excursions, > 60 minutesmonthly maximumreport only (occur/d)all year701
pH range excursions, monthly total accummonthly maximumreport only (min)all year701

How strict are these limits?

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

Same industry: the 5 Chemicals and Allied Products permits in Wisconsin.

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Your permit document is the final word. As JSON: /api/v1/permits/WI0003565 · MCP: https://passage-data.com/mcp