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Petersburg, City of

Sewage treatment plant, Petersburg, Illinois. NPDES permit IL0022233, in force until Apr 30, 2028. Last 12 months: over a limit 23 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form 0 monthly (18 values), outfall INF form L monthly (4 values)
Renewal application due
Nov 2, 2027 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
29 values over a limit, 0 required values missing, 0 of 24 reports late

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

All 23 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], monthly average36 mg/L≤ 25 mg/L44%
October 2025Solids, total suspended, monthly average74 mg/L≤ 37 mg/L100%
October 2025Solids, total suspended, weekly average80 mg/L≤ 45 mg/L78%
November 2025Solids, total suspended, monthly average51 mg/L≤ 37 mg/L38%
November 2025Solids, total suspended, weekly average63 mg/L≤ 45 mg/L40%
December 2025Solids, total suspended, monthly average52 mg/L≤ 37 mg/L41%
December 2025Solids, total suspended, weekly average53 mg/L≤ 45 mg/L18%
January 2026Solids, total suspended, monthly average48 mg/L≤ 37 mg/L30%
January 2026Solids, total suspended, weekly average49 mg/L≤ 45 mg/L9%
March 2026Solids, total suspended, monthly average59.5 mg/L≤ 37 mg/L61%
March 2026Solids, total suspended, weekly average69 mg/L≤ 45 mg/L53%
May 2026Solids, total suspended, monthly average65.5 mg/L≤ 37 mg/L77%
May 2026Solids, total suspended, weekly average75 mg/L≤ 45 mg/L67%
June 2026Coliform, fecal general, daily maximum727 #/100mL≤ 400 #/100mL82%
June 2026Solids, total suspended, monthly average66 mg/L≤ 37 mg/L78%
June 2026Solids, total suspended, weekly average78 mg/L≤ 45 mg/L73%
July 2026Coliform, fecal general, daily maximum548 #/100mL≤ 400 #/100mL37%
July 2026Oxygen, dissolved [DO], daily minimum4.33 mg/L≥ 5 mg/L13%
July 2026Solids, total suspended, monthly average74.5 mg/L≤ 37 mg/L101%
July 2026Solids, total suspended, weekly average79 mg/L≤ 45 mg/L76%
August 2026Solids, total suspended, monthly average79 mg/L≤ 37 mg/L114%
August 2026Solids, total suspended, weekly average84 mg/L≤ 45 mg/L87%
August 2026pH, maximum9.03 SU≤ 9 SU—

Limits in force (25)

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≤ 37 mg/Lall year001
Solids, total suspendedweekly average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 370 lb/dall year001
Solids, total suspendedweekly average≤ 450 lb/dall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all 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/LJan, Feb, Mar, Apr, Nov, Dec001
Chlorine, total residualdaily maximum≤ .05 mg/LMay–Oct001
Coliform, fecal generaldaily maximum≤ 400 #/100mLMay–Oct001
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≤ 260 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 400 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 (MGD)all yearINF
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF

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/IL0022233 · MCP: https://passage-data.com/mcp