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Tennessee Valley Authority (TVA)

Federal facility (Bituminous Coal And Lignite - Surface), Caryville, Tennessee. NPDES permit TN0071749 expired Feb 28, 2026; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: form G quarterly (36 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (36)

ParameterStatisticLimitMonths
Specific conductancedaily minimumreport only (uS/cm) (alert, not enforceable)all year
Specific conductancedaily minimumreport only (uS/cm) (alert, not enforceable)all year
Specific conductancemonthly averagereport only (uS/cm) (alert, not enforceable)all year
Specific conductancemonthly averagereport only (uS/cm) (alert, not enforceable)all year
Specific conductancedaily maximumreport only (uS/cm) (alert, not enforceable)all year
Specific conductancedaily maximumreport only (uS/cm) (alert, not enforceable)all year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
Solids, settleablemonthly average≤ .5 mL/Lall year
Solids, settleablemonthly average≤ .5 mL/Lall year
Solids, settleabledaily maximum≤ .5 mL/Lall year
Solids, settleabledaily maximum≤ .5 mL/Lall year
Sulfate, total [as SO4]daily minimumreport only (mg/L) (alert, not enforceable)all year
Sulfate, total [as SO4]daily minimumreport only (mg/L) (alert, not enforceable)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L) (alert, not enforceable)all year
Sulfate, total [as SO4]monthly averagereport only (mg/L) (alert, not enforceable)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L) (alert, not enforceable)all year
Sulfate, total [as SO4]daily maximumreport only (mg/L) (alert, not enforceable)all year
Iron, total [as Fe]daily minimumreport only (mg/L) (alert, not enforceable)all year
Iron, total [as Fe]daily minimumreport only (mg/L) (alert, not enforceable)all year
Iron, total [as Fe]monthly averagereport only (mg/L) (alert, not enforceable)all year
Iron, total [as Fe]monthly averagereport only (mg/L) (alert, not enforceable)all year
Iron, total [as Fe]daily maximumreport only (mg/L) (alert, not enforceable)all year
Iron, total [as Fe]daily maximumreport only (mg/L) (alert, not enforceable)all year
Manganese, total [as Mn]daily minimumreport only (mg/L) (alert, not enforceable)all year
Manganese, total [as Mn]daily minimumreport only (mg/L) (alert, not enforceable)all year
Manganese, total [as Mn]monthly averagereport only (mg/L) (alert, not enforceable)all year
Manganese, total [as Mn]monthly averagereport only (mg/L) (alert, not enforceable)all year
Manganese, total [as Mn]daily maximumreport only (mg/L) (alert, not enforceable)all year
Manganese, total [as Mn]daily maximumreport only (mg/L) (alert, not enforceable)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (gal/min)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (gal/min)all year

How strict are these limits?

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

Same industry: the 30 Coal Mining permits in Tennessee.

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/TN0071749 · MCP: https://passage-data.com/mcp