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City of Benton

Sewage treatment plant, Benton, Tennessee. NPDES permit TN0067334 expired Oct 31, 2026. Last 12 months: over a limit 4 times (last September 2026), 1 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (36 values), outfall INF1 form G monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
2 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
February 2026Solids, suspended percent removal, monthly average minimum83.2 %≥ 85 %12%
May 2026Nitrogen, ammonia total [as N], weekly average12.725 lb/d≤ 12.3 lb/d3%
May 2026Nitrogen, ammonia total [as N], weekly average8.4 mg/L≤ 8.2 mg/L2%
September 2026Solids, suspended percent removal, monthly average minimum70.7 %≥ 85 %95%

Limits in force (47)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/Lall year001
pHdaily minimum≥ 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≤ 45 lb/dall year001
Solids, total suspendedweekly average≤ 60 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]annual total≤ 12176 lb/yrall year001
Nitrogen, ammonia total [as N]monthly average≤ 10.7 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 5.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 16.1 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 8.2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 21.4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 11 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 16.1 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 9.3 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 24.2 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 12.3 lb/dMay–Oct001
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]annual total≤ 1948 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≤ 941 #/100mLall year001
UV Light Workingvaluereport only (pass=0;fail=1)all 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≤ 38 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 53 lb/dall year001
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
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/TN0067334 · MCP: https://passage-data.com/mcp