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Sewage treatment plant, Huntingdon, Tennessee. NPDES permit TN0026166, in force until Jul 31, 2030. Last 12 months: over a limit 5 times (last December 2025), 6 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 13.46 mg/L | ≤ 10 mg/L | 35% |
| October 2025 | Nitrogen, ammonia total [as N], monthly average | 74.021 lb/d | ≤ 54 lb/d | 37% |
| October 2025 | Nitrogen, ammonia total [as N], weekly average | 116.902 lb/d | ≤ 81 lb/d | 44% |
| October 2025 | Nitrogen, ammonia total [as N], weekly average | 15.4 mg/L | ≤ 15 mg/L | 3% |
| December 2025 | BOD, carbonaceous, percent removal, monthly average minimum | 64.1 % | ≥ 65 % | 3% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | instantaneous minimum | ≥ 1 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6 SU | all year | 001 |
| pH | maximum | ≤ 10 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 100 mg/L | all year | 001 |
| Solids, total suspended | weekly average | ≤ 110 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 120 mg/L | all year | 001 |
| Solids, total suspended | monthly average | ≤ 542 lb/d | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 651 lb/d | all year | 001 |
| Solids, total suspended | weekly average | ≤ 596 lb/d | all year | 001 |
| Solids, settleable | daily maximum | ≤ 1 mL/L | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (mg/L) | all year | 001 |
| Nitrogen, total [as N] | daily maximum | report only (lb/d) | all year | 001 |
| Nitrogen, ammonia total [as N] | monthly average | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 10 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 15 mg/L | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | Jan, Feb, Mar, Apr, Nov, Dec | 001 |
| Nitrogen, ammonia total [as N] | daily maximum | report only (mg/L) | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | monthly average | ≤ 54 lb/d | May–Oct | 001 |
| Nitrogen, ammonia total [as N] | weekly average | ≤ 81 lb/d | May–Oct | 001 |
| Phosphorus, total [as P] | daily maximum | report only (mg/L) | all year | 001 |
| Phosphorus, total [as P] | daily maximum | report only (lb/d) | 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 | monthly average | ≤ .19 mg/L | all year | 001 |
| Chlorine, total residual | daily maximum | ≤ .32 mg/L | all year | 001 |
| E. coli | monthly geometric mean | ≤ 126 #/100mL | all year | 001 |
| E. coli | daily maximum | ≤ 941 #/100mL | all year | 001 |
| SSO, Dry Weather | monthly total | ≤ 0 occur/mo | all year | 001 |
| SSO, Wet Weather | monthly total | ≤ 0 occur/mo | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 40 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 50 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 60 mg/L | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | ≤ 217 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | ≤ 325 lb/d | all year | 001 |
| BOD, carbonaceous [5 day, 20 C] | weekly average | ≤ 271 lb/d | all year | 001 |
| BOD, carbonaceous, percent removal | monthly average minimum | ≥ 65 % | all year | 001 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | INF1 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | INF1 |
| BOD, carbonaceous [5 day, 20 C] | monthly average | report only (mg/L) | all year | INF1 |
| BOD, carbonaceous [5 day, 20 C] | daily maximum | report only (mg/L) | all year | INF1 |
Cited limits by parameter: Tennessee'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/TN0026166 · MCP: https://passage-data.com/mcp