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Sewage treatment plant, Brooklyn, Indiana. NPDES permit IN0039772, in force until May 31, 2027. Last 12 months: over a limit 18 times (last August 2026), 11 required values missing, 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Phosphorus, total [as P], monthly average | 1.939 mg/L | ≤ 1 mg/L | 94% |
| November 2025 | Phosphorus, total [as P], monthly average | 1.314 mg/L | ≤ 1 mg/L | 31% |
| December 2025 | Phosphorus, total [as P], monthly average | 1.895 mg/L | ≤ 1 mg/L | 90% |
| December 2025 | pH, daily minimum | 4.4 SU | ≥ 6 SU | — |
| January 2026 | Phosphorus, total [as P], monthly average | 1.3785 mg/L | ≤ 1 mg/L | 38% |
| February 2026 | Phosphorus, total [as P], monthly average | 1.294 mg/L | ≤ 1 mg/L | 29% |
| April 2026 | Chlorine, total residual, daily maximum | 1.18 mg/L | < .06 mg/L | 1867% |
| April 2026 | Chlorine, total residual, monthly average | .342 mg/L | < .06 mg/L | 470% |
| April 2026 | Oxygen, dissolved [DO], daily average minimum | 3.27 mg/L | ≥ 4 mg/L | 18% |
| May 2026 | Chlorine, total residual, daily maximum | 1.59 mg/L | < .06 mg/L | 2550% |
| May 2026 | Chlorine, total residual, monthly average | .573 mg/L | < .06 mg/L | 855% |
| May 2026 | Oxygen, dissolved [DO], daily average minimum | 3.11 mg/L | ≥ 4 mg/L | 22% |
| June 2026 | Chlorine, total residual, daily maximum | .23 mg/L | < .06 mg/L | 283% |
| June 2026 | Chlorine, total residual, monthly average | .069 mg/L | < .06 mg/L | 15% |
| July 2026 | Chlorine, total residual, daily minimum | 0 mg/L | ≥ .5 mg/L | 100% |
| July 2026 | Chlorine, total residual, daily maximum | .06 mg/L | < .06 mg/L | 0% |
| August 2026 | Chlorine, total residual, daily minimum | 0 mg/L | ≥ .5 mg/L | 100% |
| August 2026 | E. coli, colony forming units [CFU], daily maximum | 2419 CFU/100mL | ≤ 235 CFU/100mL | 929% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily average minimum | ≥ 4 mg/L | all year |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | all year |
| Solids, total suspended | monthly average | ≤ 85.1 lb/d | all year |
| Solids, total suspended | maximum weekly average | ≤ 127.7 lb/d | all year |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 9.6 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10.2 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 14.4 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 15.3 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 27.2 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 28.9 lb/d | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 40.9 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 43.4 lb/d | Jan, Feb, Mar, Apr, Dec |
| Phosphorus, total [as P] | monthly average | ≤ 1 mg/L | all year |
| Phosphorus, total [as P] | monthly average | report only (lb/d) | all year |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| Chlorine, total residual | monthly average | < .06 mg/L | Apr–Oct |
| Chlorine, total residual | daily maximum | < .06 mg/L | Apr–Oct |
| Chlorine, total residual | daily minimum | ≥ .5 mg/L | Apr–Oct |
| Chlorine, total residual | daily maximum | report only (mg/L) | Apr–Oct |
| E. coli, colony forming units [CFU] | monthly geometric mean | ≤ 125 CFU/100mL | Apr–Oct |
| E. coli, colony forming units [CFU] | daily maximum | ≤ 235 CFU/100mL | Apr–Oct |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 25 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | all year |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 70.9 lb/d | all year |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 113.5 lb/d | all year |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
Cited limits by parameter: Indiana'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/IN0039772 · MCP: https://passage-data.com/mcp