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Morgan County Schools

Sewage treatment plant, Oakdale, Tennessee. NPDES permit TN0023051, in force until Feb 28, 2031. Last 12 months: over a limit 10 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form G monthly (17 values)
Last report on file
September 2026

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

Period endingParameterReportedLimitOver by
March 2026Nitrogen, ammonia total [as N], daily maximum3.5 mg/L≤ 2.15 mg/L63%
March 2026Nitrogen, ammonia total [as N], monthly average3.5 mg/L≤ 1.07 mg/L227%
April 2026Nitrogen, ammonia total [as N], daily maximum3.5 mg/L≤ 2.15 mg/L63%
April 2026Nitrogen, ammonia total [as N], monthly average3.5 mg/L≤ 1.07 mg/L227%
May 2026Nitrogen, ammonia total [as N], daily maximum3.5 mg/L≤ 1.13 mg/L210%
May 2026Nitrogen, ammonia total [as N], monthly average3.5 mg/L≤ .56 mg/L525%
August 2026Nitrogen, ammonia total [as N], daily maximum2.73 mg/L≤ 1.13 mg/L142%
August 2026Nitrogen, ammonia total [as N], monthly average2.01 mg/L≤ .56 mg/L259%
September 2026Nitrogen, ammonia total [as N], daily maximum3.5 mg/L≤ 1.13 mg/L210%
September 2026Nitrogen, ammonia total [as N], monthly average3.5 mg/L≤ .56 mg/L525%

Limits in force (19)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, settleabledaily maximum≤ 1 mL/Lall year
Nitrogen, ammonia total [as N]monthly average≤ 1.07 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .56 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 2.15 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 1.13 mg/LMay–Oct
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly geometric mean≤ .01 mg/Lall year
Chlorine, total residualdaily maximum≤ .02 mg/Lall year
E. colimonthly average≤ 126 #/100mLall year
E. colidaily maximum≤ 410 #/100mLall year
UV Light Workingvaluereport only (pass=0;fail=1)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 40 mg/Lall year

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/TN0023051 · MCP: https://passage-data.com/mcp