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

Village of Sheldon

Sewage treatment plant, Sheldon, Wisconsin. NPDES permit WI0025453 expired Jun 30, 2025; its limits still apply. Last 12 months: over a limit 6 times (last June 2026), 10 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form A monthly (4 values), outfall 701 form A monthly (6 values)
Last report on file
June 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 0 of 24 reports late

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

Period endingParameterReportedLimitOver by
April 2026BOD, 5-day, 20 deg. C, monthly average44.4≤ 30 mg/L48%
April 2026BOD, 5-day, 20 deg. C, weekly average62≤ 45 mg/L38%
May 2026BOD, 5-day, 20 deg. C, monthly average124≤ 30 mg/L313%
May 2026BOD, 5-day, 20 deg. C, weekly average124≤ 45 mg/L176%
June 2026BOD, 5-day, 20 deg. C, monthly average73.5≤ 30 mg/L145%
June 2026BOD, 5-day, 20 deg. C, weekly average119≤ 45 mg/L164%

Limits in force (10)

ParameterStatisticLimitMonthsOutfall
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year701
BOD, 5-day, 20 deg. Cmonthly maximumreport only (mg/L)all year701
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

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

· 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/WI0025453 · MCP: https://passage-data.com/mcp