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Federal facility (Sewerage Systems), Allons, Tennessee. NPDES permit TN0021393, in force until Aug 31, 2029. Last 12 months: over a limit once (last October 2025). Source: EPA ECHO, Oct 22, 2026.
| Period ending | Parameter | Reported | Limit | Over by |
|---|---|---|---|---|
| October 2025 | E. coli, monthly average | 166 #/100mL | ≤ 126 #/100mL | 32% |
| Parameter | Statistic | Limit | Months | Outfall |
|---|---|---|---|---|
| Oxygen, dissolved [DO] | daily minimum | ≥ 1 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 | daily maximum | ≤ 45 mg/L | all year | 001 |
| pH | daily minimum | ≥ 6.5 SU | all year | 001 |
| pH | daily maximum | ≤ 9 SU | all year | 001 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 001 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 001 |
| Solids, settleable | daily maximum | ≤ 1 mL/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 |
| E. coli | monthly average | ≤ 126 #/100mL | all year | 001 |
| E. coli | daily maximum | ≤ 410 #/100mL | all year | 001 |
| Oxygen, dissolved [DO] | daily minimum | ≥ 1 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | monthly average | ≤ 30 mg/L | all year | 002 |
| BOD, 5-day, 20 deg. C | daily maximum | ≤ 45 mg/L | all year | 002 |
| pH | daily minimum | ≥ 6.5 SU | all year | 002 |
| pH | daily maximum | ≤ 9 SU | all year | 002 |
| Solids, total suspended | monthly average | ≤ 30 mg/L | all year | 002 |
| Solids, total suspended | daily maximum | ≤ 45 mg/L | all year | 002 |
| Solids, settleable | daily maximum | ≤ 1 mL/L | all year | 002 |
| Flow, in conduit or thru treatment plant | monthly average | report only (MGD) | all year | 002 |
| Flow, in conduit or thru treatment plant | daily maximum | report only (MGD) | all year | 002 |
| Chlorine, total residual | daily maximum | ≤ 2 mg/L | all year | 002 |
| E. coli | monthly average | ≤ 126 #/100mL | all year | 002 |
| E. coli | daily maximum | ≤ 410 #/100mL | all year | 002 |
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/TN0021393 · MCP: https://passage-data.com/mcp