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Elementary And Secondary Schools, Nashville, Indiana. NPDES permit IN0049883, in force until Apr 30, 2028. Last 12 months: over a limit 7 times (last June 2026), 5 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | E. coli, colony forming units [CFU], daily maximum | 2420 CFU/100mL | ≤ 235 CFU/100mL | 930% |
| January 2026 | Solids, total suspended, monthly average | 33.6 mg/L | ≤ 30 mg/L | 12% |
| January 2026 | Solids, total suspended, maximum weekly average | 67.6 mg/L | ≤ 45 mg/L | 50% |
| February 2026 | Nitrogen, ammonia total [as N], monthly average | 5.6 mg/L | ≤ 1.6 mg/L | 250% |
| February 2026 | Nitrogen, ammonia total [as N], maximum weekly average | 20.6 mg/L | ≤ 2.4 mg/L | 758% |
| June 2026 | Solids, total suspended, monthly average | 19.3 mg/L | ≤ 18 mg/L | 7% |
| June 2026 | Solids, total suspended, maximum weekly average | 30.4 mg/L | ≤ 27 mg/L | 13% |
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| Oxygen, dissolved [DO] | daily average minimum | ≥ 6 mg/L | May–Nov |
| Oxygen, dissolved [DO] | daily average minimum | ≥ 5 mg/L | Jan, Feb, Mar, Apr, Dec |
| pH | daily minimum | ≥ 6 SU | all year |
| pH | daily maximum | ≤ 9 SU | all year |
| Solids, total suspended | monthly average | ≤ 30 mg/L | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | monthly average | ≤ 18 mg/L | May–Nov |
| Solids, total suspended | maximum weekly average | ≤ 45 mg/L | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | maximum weekly average | ≤ 27 mg/L | May–Nov |
| Solids, total suspended | monthly average | ≤ 1.5 lb/d | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | monthly average | ≤ .9 lb/d | May–Nov |
| Solids, total suspended | maximum weekly average | ≤ 2.3 lb/d | Jan, Feb, Mar, Apr, Dec |
| Solids, total suspended | maximum weekly average | ≤ 1.4 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.1 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 1.6 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 1.6 mg/L | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ 2.4 mg/L | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .06 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | monthly average | ≤ .08 lb/d | Jan, Feb, Mar, Apr, Dec |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ .08 lb/d | May–Nov |
| Nitrogen, ammonia total [as N] | maximum weekly average | ≤ .12 lb/d | Jan, Feb, Mar, Apr, Dec |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year |
| 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 | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 15 mg/L | May–Nov |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 40 mg/L | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 23 mg/L | May–Nov |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 1.3 lb/d | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ .8 lb/d | May–Nov |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 2 lb/d | Jan, Feb, Mar, Apr, Dec |
| BOD, carbonaceous [5 day, 20 C] | maximum weekly average | ≤ 1.2 lb/d | May–Nov |
| Flow, total | monthly total | report only (Mgal/mo) | all year |
Cited limits by parameter: Indiana's rules and the federal ones.
Same industry: the 69 Educational Services permits in Indiana.
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