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City of Lafayette

Sewage treatment plant, major discharger, Lafayette, Tennessee. NPDES permit TN0020877, in force until May 31, 2029. Last 12 months: over a limit 8 times (last May 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (37 values), outfall INF1 form G monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
18 values over a limit, 0 required values missing, 0 of 24 reports late

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

Period endingParameterReportedLimitOver by
October 2025IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum21.28 %≥ 100 %79%
December 2025IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum31.62 %≥ 100 %68%
April 2026E. coli, daily maximum548 #/100mL≤ 410 #/100mL34%
April 2026Nitrogen, ammonia total [as N], daily maximum3.45 mg/L≤ 2.8 mg/L23%
April 2026Solids, suspended percent removal, daily minimum> 0 %≥ 40 %100%
April 2026Solids, total suspended, daily maximum361.6 mg/L≤ 45 mg/L704%
May 2026Solids, total suspended, weekly average575.9 lb/d≤ 234 lb/d146%
May 2026Solids, total suspended, weekly average79.2 mg/L≤ 40 mg/L98%

Limits in force (53)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 6 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≤ 175 lb/dall year001
Solids, total suspendedweekly average≤ 234 lb/dall 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≤ 22831 lb/yrall year001
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1.4 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 2.1 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 1.8 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 2.8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 11.1 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 17.5 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 17.5 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 26.3 lb/dJan, Feb, Mar, Apr, Nov, Dec001
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≤ 2283 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
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≤ 11.7 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 9.4 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 16.3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 11.7 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 20 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 14 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 146 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 117 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 204 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 146 lb/dMay–Oct001
BOD, carbonaceous, percent removaldaily minimum≥ 40 %all year001
BOD, carbonaceous, percent removalmonthly average minimum≥ 85 %all year001
Solids, suspended percent removaldaily minimum≥ 40 %all year001
Solids, suspended percent removalmonthly average minimum≥ 85 %all year001
IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum≥ 100 %all year001
IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasminimum≥ 100 %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/TN0020877 · MCP: https://passage-data.com/mcp