Tennessee Valley Authority (TVA)

NPDES permit TN0005452 · Major FEDERAL · administratively continued, expires 2023-02-28 · EPA's file as of 2026-09-19

Check this month's numbers before you file
Watch this permit — $79 a month. Every Monday, from EPA's newest files: the next report due and when, whether EPA's file holds your last one, any change to this permit's limits or status, and the renewal date.

This permit expired on 2023-02-28 and is administratively continued: its last limits keep applying until a new permit is issued, and EPA still expects the reports.

EPA's record, 2025-09-01 to 2026-08-31

0values over a limit
0required values missing, on 0 form(s)
0of 74 forms filed late

Last period with anything received: 2026-08-31.

Reporting

Reports are due about 15 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (69)

OutfallParameterStatisticLimitMonths
001pHDAILY MN >= 6 SU all year
001Solids, total suspendedMO AVG <= 29.9 mg/L all year
001Solids, total suspendedDAILY MX <= 92 mg/L all year
001Oil and grease, hexane extr methodMO AVG <= 14.4 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 19.4 mg/L all year
001Arsenic, total [as As]DAILY MX report only all year
001Barium, total [as Ba]DAILY MX report only all year
001Beryllium, total [as Be]DAILY MX report only all year
001Cadmium, total [as Cd]DAILY MX report only all year
001Chromium, total [as Cr]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]DAILY MX report only all year
001Lead, total [as Pb]DAILY MX report only all year
001Thallium, total [as Tl]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY MX report only all year
001Zinc, total [as Zn]DAILY MX report only all year
001Antimony, total [as Sb]DAILY MX report only all year
001Aluminum, total [as Al]DAILY MX report only all year
001Selenium, total [as Se]DAILY MX report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Mercury, total [as Hg]DAILY MX report only all year
002Temperature, water deg. centigradeDAILY MX <= 36.1 deg C all year
002Temperature, water deg. centigradeDAILY MX report only all year
002pHDAILY MN >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oxidants, total residualMO AVG <= .011 mg/L all year
002Oxidants, total residualDAILY MX <= .019 mg/L all year
002Flow, in conduit or thru treatment plantMO AVG report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Mercury, total [as Hg]VALUE <= 30 ng/L all year
002Chlorination durationDAILY MX <= 120 min all year
002Duration of dischargeDAILY MX <= 120 min all year
002IC25 Static Renewal 7 Day Chronic Ceriodaphnia dubiaMINIMUM >= 100 % all year
002IC25 Static Renewal 7 Day Chronic ChrpimephalesMINIMUM >= 100 % all year
005Copper, total [as Cu]VALUE <= 1 mg/L all year
005Iron, total [as Fe]VALUE <= 1 mg/L all year
009Arsenic, total [as As]MO AVG <= 8 ug/L all year
009Arsenic, total [as As]DAILY MX <= 11 ug/L all year
009Flow, in conduit or thru treatment plantMO AVG report only all year
009Flow, in conduit or thru treatment plantDAILY MX report only all year
009Mercury, total [as Hg]MO AVG <= 356 ng/L all year
009Mercury, total [as Hg]DAILY MX <= 788 ng/L all year
01ApHMINIMUM >= 6 SU all year
01ApHMAXIMUM <= 9 SU all year
01ASolids, total suspendedVALUE <= 100 mg/L all year
01AOil and grease, hexane extr methodVALUE <= 20 mg/L all year
01AFlow, in conduit or thru treatment plantMO AVG report only all year
01AFlow, in conduit or thru treatment plantDAILY MX report only all year
01AMercury, total [as Hg]VALUE report only all year
01CSolids, total suspendedMO AVG <= 30 mg/L all year
01CSolids, total suspendedDAILY MX <= 100 mg/L all year
RWIHardness, total [as CaCO3]VALUE report only all year
RWIArsenic, total [as As]VALUE report only all year
RWIBarium, total [as Ba]VALUE report only all year
RWIBeryllium, total [as Be]VALUE report only all year
RWICadmium, total [as Cd]VALUE report only all year
RWIChromium, total [as Cr]VALUE report only all year
RWICopper, total [as Cu]VALUE report only all year
RWIIron, total [as Fe]VALUE report only all year
RWILead, total [as Pb]VALUE report only all year
RWINickel, total [as Ni]VALUE report only all year
RWISilver, total [as Ag]VALUE report only all year
RWIZinc, total [as Zn]VALUE report only all year
RWIAntimony, total [as Sb]VALUE report only all year
RWIAluminum, total [as Al]VALUE report only all year
RWISelenium, total [as Se]VALUE report only all year
RWIMercury, total [as Hg]VALUE report only all year

Built from EPA's ECHO bulk files. EPA's file, not the permit document, is the source: read your permit. Check a report before you file it · All states