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

Smithton, Village of

Sewage treatment plant, Smithton, Illinois. NPDES permit IL0020834, in force until Aug 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (27 values), outfall INF form L monthly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 4 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]minimum weekly average≥ 6 mg/LMar–Jul001
Oxygen, dissolved [DO]daily minimum≥ 3.5 mg/LJan, Feb, Aug, Sep, Oct, Nov, Dec001
Oxygen, dissolved [DO]daily minimum≥ 5 mg/LMar–Jul001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 12 mg/Lall year001
Solids, total suspendeddaily maximum≤ 24 mg/Lall year001
Solids, total suspendedmonthly average≤ 285 lb/dall year001
Solids, total suspendeddaily maximum≤ 570 lb/dall year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]daily maximumreport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 1.6 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 3.4 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 10.3 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 4.4 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 38 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 36 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 81 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 200 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 245 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 105 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 4 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ 90 lb/dJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 95 lb/dMar, Apr, May, Sep, Oct001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 24 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualdaily maximum≤ .05 mg/Lall year001
Coliform, fecal generaldaily maximumreport only (#/100L)May–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 238 lb/dall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 475 lb/dall year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearINF
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/d)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/d)all yearINF

How strict are these limits?

Cited limits by parameter: Illinois'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/IL0020834 · MCP: https://passage-data.com/mcp