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Tennessee Valley Authority (TVA)

Federal facility (Electric Services), Cumberland City, Tennessee. NPDES permit TN0082457, in force until Jan 31, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form G monthly (14 values), outfall S01 form G monthly (3 values)
Last report on file
September 2026

Limits in force (19)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum≤ 30.5 deg C (alert, not enforceable)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendeddaily maximum≤ 100 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 10.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 5.45 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Jan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)May–Oct001
Oil and greasemonthly average≤ 15 mg/Lall year001
Oil and greasedaily maximum≤ 20 mg/Lall 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 residualdaily maximumreport only (mg/L)all year001
IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimum> 9 %all year001
IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasminimum> 9 %all year001
Temperature, water deg. centigradevaluereport only (deg C)all yearS01
Temp. diff. between samp. & upstrm deg. Cdaily maximum≤ 3 deg Call yearS01
Temperature rate of change deg. C/hrdaily maximum≤ 2 deg C/hrall yearS01

How strict are these limits?

Cited limits by parameter: Tennessee's rules and the federal ones.

Same industry: the 15 Electric Services permits in Tennessee.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/TN0082457 · MCP: https://passage-data.com/mcp