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City of Dyer

Sewage treatment plant, Dyer, Tennessee. NPDES permit TN0021563, in force until Jul 31, 2027. Last 12 months: over a limit 6 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)
Renewal application due
Feb 1, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
2 values over a limit, 0 required values missing, 2 of 24 reports late

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

Period endingParameterReportedLimitOver by
March 2026Solids, total suspended, daily maximum63 mg/L≤ 45 mg/L40%
March 2026Solids, total suspended, weekly average42 mg/L≤ 40 mg/L5%
April 2026Nitrogen, ammonia total [as N], daily maximum5.3 mg/L≤ 4 mg/L33%
April 2026Nitrogen, ammonia total [as N], weekly average2.49 mg/L≤ 1.61 mg/L55%
April 2026SSO, Dry Weather, monthly total1 occur/mo≤ 0 occur/mo—
May 2026Nitrogen, ammonia total [as N], weekly average.941 mg/L≤ .84 mg/L12%

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≤ 169 lb/dall year001
Solids, total suspendedweekly average≤ 225 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/yr)all year001
Nitrogen, total [as N]rolling average≤ 27490 lb/yrall year001
Nitrogen, ammonia total [as N]monthly average≤ .56 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.07 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ .84 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 1.61 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≤ 4 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 3.2 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 6 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 4.75 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 9.06 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/yr)all year001
Phosphorus, total [as P]rolling average≤ 3436 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≤ .011 mg/Lall year001
Chlorine, total residualdaily maximum≤ .02 mg/Lall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. colidaily maximum≤ 941 #/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≤ 5 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 7.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 7.5 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 10 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≤ 28 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 42 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 42 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 56 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
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.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0021563 · MCP: https://passage-data.com/mcp