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School District of Superior

Sewage treatment plant, Superior, Wisconsin. NPDES permit WI0035866 expired Sep 30, 2022; its limits still apply. Last 12 months: no values over a limit, 12 required values missing, 2 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (8 values), outfall 701 form A monthly (4 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
0 values over a limit, 12 required values missing, 1 of 17 reports late

Limits in force (19)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 7 mg/LApr, May, Sep, Oct, Nov001
BOD, 5-day, 20 deg. Cweekly average≤ 10 mg/LSep–Nov001
BOD, 5-day, 20 deg. Cweekly average≤ 13 mg/LApr, May001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LSep–Nov001
BOD, 5-day, 20 deg. Cmonthly average≤ 13 mg/LApr, May001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)Apr, May001
pHdaily minimum≥ 6 SUApr, May, Sep, Oct, Nov001
pHdaily maximum≤ 9 SUApr, May, Sep, Oct, Nov001
Solids, total suspendedweekly average≤ 10 mg/LSep–Nov001
Solids, total suspendedweekly average≤ 13 mg/LApr, May001
Solids, total suspendedmonthly average≤ 10 mg/LSep–Nov001
Solids, total suspendedmonthly average≤ 13 mg/LApr, May001
Flow, in conduit or thru treatment plantmonthly average≤ .015 MGDApr, May001
Flow, in conduit or thru treatment plantdaily maximum≤ .015 MGDSep–Nov001
Flow, in conduit or thru treatment plantdaily maximum≤ .1 MGDApr, May001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year701
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year701
Solids, total suspendedmonthly averagereport only (mg/L)all year701
Solids, total suspendeddaily maximumreport only (mg/L)all year701

How strict are these limits?

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

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/WI0035866 · MCP: https://passage-data.com/mcp