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NPDES permit TX0034738 · Major NON-POTW · administratively continued, expires 2025-02-03 · 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 2025-02-03 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

1values over a limit
0required values missing, on 0 form(s)
0of 25 forms filed late

Last period with anything received: 2026-07-31. Most often over: Chlorine, total residual (1).

Reporting

Reports are due about 20 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (59)

OutfallParameterStatisticLimitMonths
001Temperature, water deg. fahrenheitDAILY MX <= 105 deg F all year
001pHMINIMUM >= 5 SU all year
001pHMAXIMUM <= 11 SU all year
001Solids, total suspendedDAILY AV <= 45.4 lb/d all year
001Solids, total suspendedDAILY MX <= 95.5 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 424 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 965 lb/d all year
001Carbon, tot organic [TOC]DAILY AV <= 55.6 lb/d all year
001Carbon, tot organic [TOC]DAILY MX <= 111 lb/d all year
001Arsenic, total [as As]DAILY AV <= 1.44 lb/d all year
001Arsenic, total [as As]DAILY MX <= 3.23 lb/d all year
001Chromium, total [as Cr]DAILY AV <= .349 lb/d all year
001Chromium, total [as Cr]DAILY MX <= .862 lb/d all year
001Cobalt, total [as Co]DAILY MX report only all year
001Copper, total [as Cu]DAILY MX report only all year
001Iron, total [as Fe]DAILY AV <= 4.33 lb/d all year
001Iron, total [as Fe]DAILY MX <= 8.63 lb/d all year
001Lead, total [as Pb]DAILY AV <= .303 lb/d all year
001Lead, total [as Pb]DAILY MX <= .652 lb/d all year
001Molybdenum, total [as Mo]DAILY AV <= 81.1 lb/d all year
001Molybdenum, total [as Mo]DAILY MX <= 181.3 lb/d all year
001Nickel, total [as Ni]DAILY AV <= .862 lb/d all year
001Nickel, total [as Ni]DAILY MX <= 1.28 lb/d all year
001Vanadium, total [as V]DAILY MX <= 230 mg/L 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
001BenzeneDAILY MX report only all year
001Flow, in conduit or thru treatment plantDAILY AV <= .35 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= .5 MGD all year
001Chlorine, total residualMO MIN >= 1 mg/L all year
001Chlorine, total residualMO MAX <= 4 mg/L all year
001EnterococciDAILY MX <= 89 CFU/100mL all year
001Mercury, total [as Hg]DAILY MX report only all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 58 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 117 lb/d all year
001pH range excursions, > 60 minutesMO TOTAL <= 0 occur/mo all year
001pH range excursions, monthly total accumMO TOTAL <= 446 min all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Oil & GreaseDAILY MX <= 15 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 15 mg/L all year
002Carbon, tot organic [TOC]DAILY MX <= 75 mg/L all year
002Arsenic, total [as As]DAILY MX report only all year
002Chromium, total [as Cr]DAILY MX report only all year
002Cobalt, total [as Co]DAILY MX report only all year
002Copper, total [as Cu]DAILY MX report only all year
002Iron, total [as Fe]DAILY MX report only all year
002Lead, total [as Pb]DAILY MX report only all year
002Molybdenum, total [as Mo]DAILY MX <= 30 mg/L all year
002Nickel, total [as Ni]DAILY MX report only all year
002Vanadium, total [as V]DAILY MX <= 30 mg/L all year
002Antimony, total [as Sb]DAILY MX report only all year
002Aluminum, total [as Al]DAILY MX report only all year
002Selenium, total [as Se]DAILY MX report only all year
002BenzeneDAILY MX report only all year
002Flow, in conduit or thru treatment plantDAILY AV report only all year
002Flow, in conduit or thru treatment plantDAILY MX report only all year
002Mercury, total [as Hg]DAILY MX 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