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Sewage treatment plant, major discharger, Lawrenceville, Illinois. NPDES permit IL0029467 expired Sep 30, 2025; its limits still apply. Last 12 months: over a limit 24 times (last July 2026), 48 required values missing. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Coliform, fecal general, daily maximum | < 20000 #/100mL | ≤ 400 #/100mL | 4900% |
| October 2025 | Nitrogen, ammonia total [as N], daily maximum | 153.21 lb/d | ≤ 85 lb/d | 80% |
| October 2025 | Nitrogen, ammonia total [as N], daily maximum | 16.7 mg/L | ≤ 4.7 mg/L | 255% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 13.7 mg/L | ≤ 6 mg/L | 128% |
| November 2025 | Nitrogen, ammonia total [as N], daily maximum | 133.67 lb/d | ≤ 108 lb/d | 24% |
| December 2025 | Nitrogen, ammonia total [as N], daily maximum | 10 mg/L | ≤ 6 mg/L | 67% |
| January 2026 | Nitrogen, ammonia total [as N], daily maximum | 11.9 mg/L | ≤ 6 mg/L | 98% |
| January 2026 | Oxygen, dissolved [DO], daily minimum | 1 mg/L | ≥ 3.5 mg/L | 71% |
| January 2026 | Oxygen, dissolved [DO], minimum weekly average | 1.42 mg/L | ≥ 4 mg/L | 65% |
| January 2026 | Oxygen, dissolved [DO], monthly average minimum | 2.88 mg/L | ≥ 5.5 mg/L | 48% |
| February 2026 | Nitrogen, ammonia total [as N], daily maximum | 11.9 mg/L | ≤ 6 mg/L | 98% |
| February 2026 | Oxygen, dissolved [DO], daily minimum | 1 mg/L | ≥ 3.5 mg/L | 71% |
| February 2026 | Oxygen, dissolved [DO], minimum weekly average | 1.2 mg/L | ≥ 4 mg/L | 70% |
| February 2026 | Oxygen, dissolved [DO], monthly average minimum | 3.62 mg/L | ≥ 5.5 mg/L | 34% |
| March 2026 | Nitrogen, ammonia total [as N], daily maximum | 8.2 mg/L | ≤ 4.7 mg/L | 74% |
| April 2026 | Nitrogen, ammonia total [as N], daily maximum | 15.8 mg/L | ≤ 4.7 mg/L | 236% |
| May 2026 | Nitrogen, ammonia total [as N], daily maximum | 6.2 mg/L | ≤ 4.7 mg/L | 32% |
| May 2026 | Oxygen, dissolved [DO], daily minimum | 4.4 mg/L | ≥ 5 mg/L | 12% |
| May 2026 | Oxygen, dissolved [DO], minimum weekly average | 5.3 mg/L | ≥ 6 mg/L | 12% |
| June 2026 | Oxygen, dissolved [DO], daily minimum | 4.1 mg/L | ≥ 5 mg/L | 18% |
| June 2026 | Oxygen, dissolved [DO], minimum weekly average | 4.3 mg/L | ≥ 6 mg/L | 28% |
| July 2026 | Oxygen, dissolved [DO], minimum weekly average | 5.5 mg/L | ≥ 6 mg/L | 8% |
| July 2026 | Solids, total suspended, monthly average | 29 mg/L | ≤ 25 mg/L | 16% |
| July 2026 | Solids, total suspended, weekly average | 66 mg/L | ≤ 45 mg/L | 47% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | monthly average minimum | ≥ 5.5 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 6 mg/L | Mar–Jul | 001 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 4 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | Mar–Jul | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 3.5 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 25 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 450 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 811 lb/d | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.7 mg/L | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 4.4 mg/L | Jun–Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 6 mg/L | Jan, Feb, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 85 lb/d | Mar, Apr, May, Sep, Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 79 lb/d | Jun–Aug | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 108 lb/d | Jan, Feb, Nov, Dec | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | 001 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | 001 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | 001 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | 001 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | 001 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 001 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | 001 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 001 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .2 mg/L | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 001 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | 001 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | May–Oct | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 20 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 360 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 721 lb/d | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 002 |
| pH | minimum | ≥ 6 SU | all year | 002 |
| pH | maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 002 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 002 |
| Chlorine, total residual | monthly average | ≤ .75 mg/L | all year | 002 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 002 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | INF |
| Solids, total suspended | monthly average | report only (mg/L) | all year | INF |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INF |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INF |
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/IL0029467 · MCP: https://passage-data.com/mcp