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Sewage treatment plant, major discharger, Streator, Illinois. NPDES permit IL0022004 expired Apr 30, 2025; its limits still apply. Last 12 months: over a limit 15 times (last July 2026), 20 required values missing, 7 of 230 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Outfall | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|---|
| October 2025 | B01 | Nitrogen, ammonia total [as N], daily maximum | 249 lb/d | ≤ 225 lb/d | 11% |
| October 2025 | B01 | Nitrogen, ammonia total [as N], daily maximum | 4.34 mg/L | ≤ 2.5 mg/L | 74% |
| December 2025 | B01 | Nitrogen, ammonia total [as N], daily maximum | 10.54 mg/L | ≤ 3.2 mg/L | 229% |
| January 2026 | B01 | Nitrogen, ammonia total [as N], daily maximum | 10.72 mg/L | ≤ 3.2 mg/L | 235% |
| January 2026 | B01 | Solids, total suspended, monthly average | 13.01 mg/L | ≤ 12 mg/L | 8% |
| March 2026 | 024 | Coliform, fecal general, daily maximum | > 2420 #/100mL | ≤ 400 #/100mL | — |
| March 2026 | B01 | BOD, carbonaceous [5 day, 20 C], daily maximum | 36 mg/L | ≤ 20 mg/L | 80% |
| March 2026 | B01 | Solids, total suspended, daily maximum | 11058.34 lb/d | ≤ 2162 lb/d | 411% |
| March 2026 | B01 | Solids, total suspended, daily maximum | 287 mg/L | ≤ 24 mg/L | 1096% |
| March 2026 | B01 | Solids, total suspended, monthly average | 1419.66 lb/d | ≤ 1081 lb/d | 31% |
| March 2026 | B01 | Solids, total suspended, monthly average | 38.09 mg/L | ≤ 12 mg/L | 217% |
| June 2026 | 024 | Coliform, fecal general, daily maximum | > 2420 #/100mL | ≤ 400 #/100mL | — |
| July 2026 | B01 | Nitrogen, ammonia total [as N], daily maximum | 4.73 mg/L | ≤ 2.5 mg/L | 89% |
| July 2026 | B01 | Nitrogen, ammonia total [as N], monthly average | 1.702 mg/L | ≤ .9 mg/L | 89% |
| July 2026 | B01 | Nitrogen, ammonia total [as N], weekly average | 3.06 mg/L | ≤ 2.3 mg/L | 33% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | monthly average minimum | report only (mg/L) | all year | 001 |
| Oxygen, dissolved [DO] | minimum weekly average | report only (mg/L) | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | report only (mg/L) | all year | 001 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 001 |
| BOD, 5-day, 20 deg. C | weekly average | ≤ 45 mg/L | all year | 001 |
| pH | minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 45 mg/L | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Chlorine, total residual | monthly average | ≤ .75 mg/L | all year | 001 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 001 |
| Flow | monthly total | report only (#/mo) | all year | 003 |
| Flow | monthly total | report only (#/mo) | all year | 009 |
| Flow | monthly total | report only (#/mo) | all year | 018 |
| Flow | monthly total | report only (#/mo) | all year | 019 |
| Flow | monthly total | report only (#/mo) | all year | 020 |
| Flow | monthly total | report only (#/mo) | all year | 021 |
| Flow | monthly total | report only (#/mo) | all year | 022 |
| Flow | monthly total | report only (#/mo) | all year | 023 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | 024 |
| pH | minimum | ≥ 6 SU | all year | 024 |
| pH | maximum | ≤ 9 SU | all year | 024 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | 024 |
| Chlorine, total residual | monthly average | ≤ .75 mg/L | all year | 024 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | 024 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | 024 |
| Flow | monthly total | report only (#/mo) | all year | 025 |
| Flow | monthly total | report only (#/mo) | all year | 026 |
| Flow | monthly total | report only (#/mo) | all year | 027 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | A01 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | A01 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | A01 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | A01 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | A01 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | A01 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | A01 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | A01 |
| Flow | monthly total | report only (#/mo) | all year | A24 |
| Oxygen, dissolved [DO] | monthly average minimum | ≥ 6 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | B01 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 6.25 mg/L | Mar–Jul | B01 |
| Oxygen, dissolved [DO] | minimum weekly average | ≥ 4.5 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | B01 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 5 mg/L | Mar–Jul | B01 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 4 mg/L | Jan, Feb, Aug, Sep, Oct, Nov, Dec | B01 |
| pH | minimum | ≥ 6 SU | all year | B01 |
| pH | maximum | ≤ 9 SU | all year | B01 |
| Solids, total suspended | monthly average | ≤ 12 mg/L | all year | B01 |
| Solids, total suspended | daily maximum | ≤ 24 mg/L | all year | B01 |
| Solids, total suspended | monthly average | ≤ 1081 lb/d | all year | B01 |
| Solids, total suspended | daily maximum | ≤ 2162 lb/d | all year | B01 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | B01 |
| Oil & Grease | daily maximum | report only (mg/L) | all year | B01 |
| Nitrogen, total [as N] | monthly average | ≤ 1243 lb/d | all year | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1 mg/L | Apr, May, Sep, Oct | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .9 mg/L | Jun–Aug | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 2.8 mg/L | Jan, Feb, Nov, Dec | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.5 mg/L | Mar | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.5 mg/L | Apr, May, Sep, Oct | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.5 mg/L | Jun–Aug | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 3.2 mg/L | Jan, Feb, Nov, Dec | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 2.9 mg/L | Mar | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 90 lb/d | Apr, May, Sep, Oct | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 81 lb/d | Jun–Aug | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 252 lb/d | Jan, Feb, Nov, Dec | B01 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 135 lb/d | Mar | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 225 lb/d | Apr, May, Sep, Oct | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 225 lb/d | Jun–Aug | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 288 lb/d | Jan, Feb, Nov, Dec | B01 |
| Nitrogen, ammonia total [as N] | daily maximum | ≤ 261 lb/d | Mar | B01 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 2.3 mg/L | Jun–Aug | B01 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 207 lb/d | Jun–Aug | B01 |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year | B01 |
| Phosphorus, total [as P] | monthly average | ≤ 95 lb/d | all year | B01 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | B01 |
| Cyanide, total [as CN] | daily maximum | report only (ug/L) | all year | B01 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | B01 |
| Cyanide, free [amenable to chlorination] | daily maximum | report only (ug/L) | all year | B01 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | B01 |
| Fluoride, total [as F] | daily maximum | report only (mg/L) | all year | B01 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | B01 |
| Arsenic, total [as As] | daily maximum | report only (mg/L) | all year | B01 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | B01 |
| Barium, total [as Ba] | daily maximum | report only (mg/L) | all year | B01 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | B01 |
| Cadmium, total [as Cd] | daily maximum | report only (mg/L) | all year | B01 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | B01 |
| Chromium, hexavalent [as Cr] | daily maximum | report only (mg/L) | all year | B01 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | B01 |
| Chromium, total [as Cr] | daily maximum | report only (mg/L) | all year | B01 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | B01 |
| Copper, total [as Cu] | daily maximum | report only (mg/L) | all year | B01 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | B01 |
| Iron, total [as Fe] | daily maximum | report only (mg/L) | all year | B01 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | B01 |
| Iron, dissolved [as Fe] | daily maximum | report only (mg/L) | all year | B01 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | B01 |
| Lead, total [as Pb] | daily maximum | report only (mg/L) | all year | B01 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | B01 |
| Manganese, total [as Mn] | daily maximum | report only (mg/L) | all year | B01 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | B01 |
| Nickel, total [as Ni] | daily maximum | report only (mg/L) | all year | B01 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | B01 |
| Silver, total [as Ag] | daily maximum | report only (mg/L) | all year | B01 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | B01 |
| Zinc, total [as Zn] | daily maximum | report only (mg/L) | all year | B01 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | B01 |
| Selenium, total [as Se] | daily maximum | report only (mg/L) | all year | B01 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | B01 |
| Phenolics, total recoverable | daily maximum | report only (mg/L) | all year | B01 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | B01 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | B01 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | May, Jun, Jul, Aug, Sep, Oct, Dec | B01 |
| Chlorine, total residual | daily maximum | ≤ .05 mg/L | Jan, Feb, Mar, Apr, Nov, Dec | B01 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | B01 |
| Mercury, total [as Hg] | daily maximum | report only (ng/L) | all year | B01 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | May–Oct | B01 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 10 mg/L | all year | B01 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 20 mg/L | all year | B01 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 901 lb/d | all year | B01 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 1801 lb/d | all year | B01 |
| BOD, 5-day, 20 deg. C | monthly average | report only (mg/L) | all year | C01 |
| Solids, total suspended | monthly average | report only (mg/L) | all year | C01 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | all year | C01 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | all year | C01 |
| Phosphorus, total [as P] | monthly average | report only (mg/L) | all year | C01 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | C01 |
| Coliform, fecal general | daily maximum | ≤ 400 #/100mL | all year | C01 |
| Flow, total | monthly total | report only (Mgal/mo) | all year | C01 |
| Flow | monthly total | report only (#/mo) | all year | C24 |
| 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 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | INF |
| Phosphorus, total [as P] | daily maximum | 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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