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

Caterpillar, Inc.

Construction Machinery, Washington, Illinois. NPDES permit IL0024163, in force until Sep 30, 2030. Last 12 months: over a limit once (last July 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form 0 monthly (20 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
July 2026Chlorine, total residual, daily maximum.12 mg/L≤ .05 mg/L140%

Limits in force (20)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. C30-day average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 60 mg/Lall year
BOD, 5-day, 20 deg. C30-day average≤ 2.63 lb/dall year
BOD, 5-day, 20 deg. Cdaily maximum≤ 42 lb/dall year
pHmonthly minimum≥ 6.5 SUall year
pHmonthly maximum≤ 9 SUall year
Solids, total suspended30-day average≤ 37 mg/Lall year
Solids, total suspendeddaily maximum≤ 74 mg/Lall year
Solids, total suspended30-day average≤ 4.63 lb/dall year
Solids, total suspendeddaily maximum≤ 52 lb/dall year
Oil & Grease30-day average≤ 15 mg/Lall year
Oil & Greasedaily maximum≤ 30 mg/Lall year
Oil & Grease30-day average≤ 1.88 lb/dall year
Oil & Greasedaily maximum≤ 21 lb/dall year
Iron, total [as Fe]30-day average≤ 2 mg/Lall year
Iron, total [as Fe]daily maximum≤ 4 mg/Lall year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualdaily maximum≤ .05 mg/Lall year
Coliform, fecal generaldaily maximumreport only (#/100mL)all year

How strict are these limits?

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

Same industry: the 11 Industrial and Commercial Machinery and Computer Equipment 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/IL0024163 · MCP: https://passage-data.com/mcp