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Irving, Village of

Sewage treatment plant, Irving, Illinois. NPDES permit IL0053881, in force until Dec 31, 2030. Last 12 months: over a limit 22 times (last July 2026), 2 required values missing. 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
8 values over a limit, 0 required values missing, 2 of 24 reports late

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

All 22 values over a limit
Period endingParameterReportedLimitOver by
February 2026BOD, carbonaceous [5 day, 20 C], monthly average27 mg/L≤ 25 mg/L8%
February 2026Solids, total suspended, monthly average82 mg/L≤ 37 mg/L122%
February 2026Solids, total suspended, monthly average98.34 lb/d≤ 58 lb/d70%
February 2026Solids, total suspended, weekly average82 mg/L≤ 45 mg/L82%
February 2026Solids, total suspended, weekly average98.34 lb/d≤ 70 lb/d40%
February 2026pH, maximum9.2 SU≤ 9 SU—
March 2026Oxygen, dissolved [DO], daily minimum3.42 mg/L≥ 5 mg/L32%
March 2026Oxygen, dissolved [DO], minimum weekly average3.42 mg/L≥ 6 mg/L43%
March 2026Solids, total suspended, monthly average40 mg/L≤ 37 mg/L8%
March 2026pH, maximum9.2 SU≤ 9 SU—
April 2026Oxygen, dissolved [DO], daily minimum2.26 mg/L≥ 5 mg/L55%
April 2026Oxygen, dissolved [DO], minimum weekly average2.26 mg/L≥ 6 mg/L62%
April 2026Solids, total suspended, monthly average56 mg/L≤ 37 mg/L51%
April 2026Solids, total suspended, monthly average66.88 lb/d≤ 58 lb/d15%
April 2026Solids, total suspended, weekly average56 mg/L≤ 45 mg/L24%
April 2026pH, maximum9.4 SU≤ 9 SU—
May 2026Oxygen, dissolved [DO], daily minimum3.11 mg/L≥ 5 mg/L38%
May 2026Oxygen, dissolved [DO], minimum weekly average3.11 mg/L≥ 6 mg/L48%
June 2026Oxygen, dissolved [DO], daily minimum2.1 mg/L≥ 5 mg/L58%
June 2026Oxygen, dissolved [DO], minimum weekly average2.1 mg/L≥ 6 mg/L65%
July 2026Oxygen, dissolved [DO], daily minimum2.21 mg/L≥ 5 mg/L56%
July 2026Oxygen, dissolved [DO], minimum weekly average2.21 mg/L≥ 6 mg/L63%

Limits in force (26)

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≤ 58 lb/dall year001
Solids, total suspendedweekly average≤ 70 lb/dall year001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ 6.3 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 (#/100mL)May–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≤ 39 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 63 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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Your permit document is the final word. As JSON: /api/v1/permits/IL0053881 · MCP: https://passage-data.com/mcp