Tennessee Valley Authority (TVA)

NPDES permit TN0082023 · Major FEDERAL · effective, expires 2028-09-30 · 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.

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

0values over a limit
0required values missing, on 0 form(s)
0of 12 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 (12)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. centigradeDAILY MX <= 30.5 deg C (alert) all year
001Temperature, water deg. centigradeVALUE report only all year
001Temp. diff. between samp. & upstrm deg. CDAILY MX <= 3 deg C all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L all year
001Solids, total suspendedDAILY MX <= 100 mg/L all year
001Oil and grease, hexane extr methodMO AVG <= 15 mg/L all year
001Oil and grease, hexane extr methodDAILY MX <= 20 mg/L 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
001Temperature rate of change deg. C/hrDAILY MX <= 2 deg C/hr 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