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Tennessee Valley Authority (TVA)

Federal facility (Electric Services), major discharger, Brownsville, Tennessee. NPDES permit TN0080918, in force until May 31, 2029. 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 (21 values), outfall 01A form G monthly (2 values), outfall 01B form G monthly (6 values), outfall 01C form G monthly (6 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 48 reports late

Limits in force (37)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademaximum≤ 30.5 deg Call year001
Oxygen, dissolved [DO]monthly average minimum≥ 5.5 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendeddaily maximumreport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ .6 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.14 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 2.93 mg/LMay–Oct001
Nitrogen, ammonia total [as N]daily maximum≤ 5.73 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year001
Hardness, total [as CaCO3]daily maximumreport only (mg/L)all year001
Chromium, hexavalent [as Cr]monthly average≤ .011 mg/Lall year001
Chromium, hexavalent [as Cr]daily maximum≤ .016 mg/Lall year001
Zinc, total [as Zn]monthly averagereport only (mg/L)all year001
Zinc, total [as Zn]daily maximumreport only (mg/L)all 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≤ .019 mg/Lall year001
Temperature rate of change deg. C/hrmaximum≤ 2 deg C/hrall year001
LC50 Static 48Hr Acute Ceriodaphnia dubiaminimum> 100 %all year001
LC50 Static 48Hr Acute Pimephales promelasminimum> 100 %all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01A
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01A
Chromium, total [as Cr]monthly average≤ .2 mg/Lall year01B
Chromium, total [as Cr]daily maximum≤ .2 mg/Lall year01B
Zinc, total [as Zn]monthly average≤ 1 mg/Lall year01B
Zinc, total [as Zn]daily maximum≤ 1 mg/Lall year01B
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01B
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01B
Solids, total suspendedmonthly average≤ 30 mg/Lall year01C
Solids, total suspendeddaily maximum≤ 100 mg/Lall year01C
Oil and greasemonthly average≤ 15 mg/Lall year01C
Oil and greasedaily maximum≤ 20 mg/Lall year01C
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year01C
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year01C

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.

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/TN0080918 · MCP: https://passage-data.com/mcp