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Savanna, City of

Sewage treatment plant, Savanna, Illinois. NPDES permit IL0020541, in force until Nov 30, 2028. 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 (20 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 48 reports late

Limits in force (44)

ParameterStatisticLimitMonthsOutfall
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 631 lb/dall year001
Solids, total suspendedweekly average≤ 946 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 4.8 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 7.9 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 4.7 mg/LJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 15 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 52 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]monthly average≤ 19 lb/dJun–Aug001
Nitrogen, ammonia total [as N]monthly average≤ 101 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 166 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 99 lb/dJun–Aug001
Nitrogen, ammonia total [as N]daily maximum≤ 313 lb/dJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 3.8 mg/LMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ 2.3 mg/LJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 12 mg/LJan, Feb, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 80 lb/dMar, Apr, May, Sep, Oct001
Nitrogen, ammonia total [as N]weekly average≤ 48 lb/dJun–Aug001
Nitrogen, ammonia total [as N]weekly average≤ 250 lb/dJan, Feb, Nov, Dec001
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 maximum≤ 400 #/100mLall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 526 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 841 lb/dall year001
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year002
Solids, total suspendeddaily maximumreport only (mg/L)all year002
Coliform, fecal generaldaily maximumreport only (#/100mL)all year002
Flowmonthly totalreport only (#/mo)all year002
BOD, 5-day, 20 deg. Cdaily maximumreport only (mg/L)all year003
Solids, total suspendeddaily maximumreport only (mg/L)all year003
Coliform, fecal generaldaily maximumreport only (#/100mL)all year003
Flowmonthly totalreport only (#/mo)all year003
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 (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/IL0020541 · MCP: https://passage-data.com/mcp