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Town of Henning

Sewage treatment plant, Henning, Tennessee. NPDES permit TN0025011, in force until Dec 31, 2029. Last 12 months: no values over a limit, 3 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (27 values), outfall INF1 form G monthly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 6 of 21 reports late

Limits in force (31)

ParameterStatisticLimitMonthsOutfall
Stream flow, instantaneousmonthly averagereport only (MGD)all year001
Stream flow, instantaneousdaily maximumreport only (MGD)all year001
Oxygen, dissolved [DO]instantaneous minimum≥ 1 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 100 mg/Lall year001
Solids, total suspendeddaily maximum≤ 120 mg/Lall year001
Solids, settleabledaily maximum≤ 1 mL/Lall year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (lb/d)all year001
Nitrogen, total [as N]rolling average≤ 8523 lb/yrall year001
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/Lall year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]rolling average≤ 1279 lb/yrall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualmonthly average≤ .06 mg/Lall year001
Chlorine, total residualdaily maximum≤ .1 mg/Lall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 410 #/100mLall year001
SSO, Dry Weathermonthly total≤ 0 occur/moall year001
SSO, Wet Weathermonthly total≤ 0 occur/moall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 30 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 40 mg/Lall year001
BOD, carbonaceous, percent removalmonthly average minimum≥ 65 %all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearINF1
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all yearINF1
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearINF1
BOD, carbonaceous [5 day, 20 C]daily maximumreport only (mg/L)all yearINF1

How strict are these limits?

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/TN0025011 · MCP: https://passage-data.com/mcp