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City of Greenbrier

Sewage treatment plant, Greenbrier, Tennessee. NPDES permit TN0020621, in force until Mar 31, 2029. Last 12 months: over a limit 9 times (last August 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 (37 values), outfall INF1 form G monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
21 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
November 2025IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum24.6 %> 100 %75%
November 2025IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas, minimum60.1 %> 100 %40%
December 2025IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia, minimum2.59 %> 100 %97%
January 2026SSO, Dry Weather, monthly total1 occur/mo≤ 0 occur/mo—
January 2026SSO, Wet Weather, monthly total1 occur/mo≤ 0 occur/mo—
March 2026SSO, Dry Weather, monthly total2 occur/mo≤ 0 occur/mo—
April 2026SSO, Dry Weather, monthly total2 occur/mo≤ 0 occur/mo—
July 2026SSO, Dry Weather, monthly total3 occur/mo≤ 0 occur/mo—
August 2026SSO, Dry Weather, monthly total3 occur/mo≤ 0 occur/mo—

Limits in force (53)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 6 mg/Lall year001
pHdaily minimum≥ 6 SUall year001
pHdaily maximum≤ 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≤ 185 lb/dall year001
Solids, total suspendedweekly average≤ 247 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≤ 11263 lb/yrall year001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1.3 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 2 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 6.1 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 8.2 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 8.2 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 12.3 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≤ 2253 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≤ 6.6 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 9.9 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 9.9 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 13.3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 13 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 41 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 61 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 61 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 82 lb/dJan, Feb, Mar, Apr, Nov, Dec001
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/TN0020621 · MCP: https://passage-data.com/mcp