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City of Lebanon

Sewage treatment plant, major discharger, Lebanon, Tennessee. NPDES permit TN0028754, in force until May 31, 2029. Last 12 months: over a limit 16 times (last September 2026), 1 required value missing, 1 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (32 values), outfall INF1 form G monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
36 values over a limit, 10 required values missing, 4 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 16 values over a limit
Period endingParameterReportedLimitOver by
November 2025SSO, Dry Weather, monthly total1 occur/mo≤ 0 occur/mo—
November 2025SSO, Dry Weather, monthly total1 occur/mo≤ 0 occur/mo—
November 2025Solids, total suspended, daily maximum98 mg/L≤ 45 mg/L118%
January 2026SSO, Wet Weather, monthly total1 occur/mo≤ 0 occur/mo—
February 2026E. coli, daily maximum920.8 #/100mL≤ 487 #/100mL89%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum42 mg/L≤ 40 mg/L5%
April 2026Solids, settleable, daily maximum2.5 mL/L≤ 1 mL/L150%
April 2026Solids, total suspended, daily maximum124 mg/L≤ 45 mg/L176%
April 2026Solids, total suspended, monthly average34.727 mg/L≤ 30 mg/L16%
April 2026Solids, total suspended, weekly average59.6 mg/L≤ 40 mg/L49%
May 2026Solids, total suspended, daily maximum82 mg/L≤ 45 mg/L82%
May 2026Solids, total suspended, weekly average50.2 mg/L≤ 40 mg/L26%
August 2026SSO, Wet Weather, monthly total1 occur/mo≤ 0 occur/mo—
August 2026Solids, total suspended, daily maximum73 mg/L≤ 45 mg/L62%
September 2026Solids, settleable, daily maximum1.2 mL/L≤ 1 mL/L20%
September 2026Solids, total suspended, daily maximum47 mg/L≤ 45 mg/L4%

Limits in force (38)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedweekly average≤ 40 mg/Lall year001
Solids, total suspendeddaily maximum≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 2502 lb/dall year001
Solids, total suspendedweekly average≤ 3336 lb/dall year001
Solids, settleabledaily maximum≤ 1 mL/Lall year001
Nitrogen, total [as N]quarterly averagereport only (mg/L)all year001
Nitrogen, total [as N]quarterly averagereport only (lb/d)all year001
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/Lall year001
Nitrogen, ammonia total [as N]weekly average≤ 15 mg/Lall year001
Nitrogen, ammonia total [as N]daily maximum≤ 20 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 834 lb/dall year001
Nitrogen, ammonia total [as N]weekly average≤ 1251 lb/dall year001
Phosphorus, total [as P]quarterly averagereport only (mg/L)all year001
Phosphorus, total [as P]quarterly averagereport only (lb/d)all 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 residualdaily maximum≤ 1.5 mg/Lall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 487 #/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≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 35 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2085 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 2919 lb/dall year001
LC50 Static 48Hr Acute Ceriodaphnia dubiaminimum> 4.3 %all year001
LC50 Static 48Hr Acute Pimephales promelasminimum> 4.3 %all year001
Solids, total suspendedmonthly averagereport only (mg/L)all yearINF1
Solids, total suspendeddaily maximumreport only (mg/L)all yearINF1
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/TN0028754 · MCP: https://passage-data.com/mcp