AUSTIN, CITY OF

NPDES permit TX0124842 · Minor NON-POTW · effective, expires 2031-06-08 · 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 27 forms filed late

Last period with anything received: 2026-07-31.

Reporting

Reports are due about 20 days after each monitoring period ends (the most common figure among TX permits in EPA's filings — check your permit).

Limits in force (27)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY AV report only all year
001Temperature, water deg. fahrenheitDAILY MX <= 90 deg F all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Flow, in conduit or thru treatment plantDAILY AV <= 1.75 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 2.5 MGD all year
001Chlorine, free availableDAILY AV <= .2 mg/L all year
001Chlorine, free availableDAILY MX <= .5 mg/L all year
001Chlorine, free availableDAILY AV <= .243 lb/d all year
001Chlorine, free availableDAILY MX <= .608 lb/d all year
001Solids, total dissolvedDAILY MX report only all year
101Solids, total suspendedDAILY AV <= 30 mg/L all year
101Solids, total suspendedDAILY MX <= 100 mg/L all year
101Oil & GreaseDAILY AV <= 15 mg/L all year
101Oil & GreaseDAILY MX <= 20 mg/L all year
101Flow, in conduit or thru treatment plantDAILY AV report only all year
101Flow, in conduit or thru treatment plantDAILY MX report only all year
TX1IC25 Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX1IC25 Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1IC25 Low Flow Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX1IC25 Lethal Static Renewal 48HR Acute Daphnia pulex48HR MIN report only all year
TX1IC25 Lethal Static Renewal 48HR Acute Daphnia pulexMO AV MN report only all year
TX1IC25 Lethal Static Renewal 48HR Acute Pimephales promelas48HR MIN report only all year
TX1IC25 Lethal Static Renewal 48HR Acute Pimephales promelasMO AV MN report only all year
TXADaphnia magna survival 24 Hr Acute WETSINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Pimephales promelasSINGSAMP 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