ORANGE, CITY OF

NPDES permit TX0073423 · Major POTW · administratively continued, expires 2021-04-01 · 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 2021-04-01 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

48values over a limit
0required values missing, on 0 form(s)
11of 39 forms filed late

Last period with anything received: 2026-07-31. Most often over: Enterococci (33), Solids, total suspended (8), Copper, total [as Cu] (4).

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 (76)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 2 mg/L all year
001BOD, 5-day, 20 deg. CDAILY AV <= 20 mg/L all year
001BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
001BOD, 5-day, 20 deg. CDAILY AV <= 1168 lb/d all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 20 mg/L all year
001Solids, total suspendedDAILY MX <= 45 mg/L all year
001Solids, total suspendedDAILY AV <= 1168 lb/d all year
001Copper, total [as Cu]DAILY AV <= .0236 mg/L all year
001Copper, total [as Cu]DAILY MX <= .05 mg/L all year
001Copper, total [as Cu]DAILY AV <= 1.38 lb/d all year
001Zinc, total [as Zn]DAILY AV <= .224 mg/L all year
001Zinc, total [as Zn]DAILY MX <= .474 mg/L all year
001Zinc, total [as Zn]DAILY AV <= 13.1 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plant2P <= 11111 gal/min all year
001Flow, in conduit or thru treatment plantANNL AVG <= 7 MGD all year
001EnterococciDAILY AV <= 35 CFU/100mL all year
001EnterococciDAILY MX <= 104 CFU/100mL all year
002Oxygen, dissolved [DO]MO MIN >= 2 mg/L all year
002BOD, 5-day, 20 deg. CDAILY AV <= 20 mg/L all year
002BOD, 5-day, 20 deg. CDAILY MX <= 45 mg/L all year
002BOD, 5-day, 20 deg. CDAILY AV <= 1168 lb/d all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV <= 20 mg/L all year
002Solids, total suspendedDAILY MX <= 45 mg/L all year
002Solids, total suspendedDAILY AV <= 1168 lb/d all year
002Nitrogen, ammonia total [as N]DAILY AV report only all year
002Nitrogen, ammonia total [as N]DAILY MX report only all year
002Nitrogen, ammonia total [as N]DAILY AV report only all year
002Copper, total [as Cu]DAILY AV <= .0072 mg/L all year
002Copper, total [as Cu]DAILY MX <= .0153 mg/L all year
002Copper, total [as Cu]DAILY AV <= .42 lb/d all year
002Zinc, total [as Zn]DAILY AV <= .0752 mg/L all year
002Zinc, total [as Zn]DAILY MX <= .1591 mg/L all year
002Zinc, total [as Zn]DAILY AV <= 4.39 lb/d 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
002Flow, in conduit or thru treatment plant2P <= 5556 gal/min all year
002Flow, in conduit or thru treatment plantANNL AVG <= 7 MGD all year
002EnterococciDAILY AV <= 35 CFU/100mL all year
002EnterococciDAILY MX <= 104 CFU/100mL all year
002Mercury, total [as Hg]DAILY AV report only all year
002Mercury, total [as Hg]DAILY MX report only all year
002Mercury, total [as Hg]DAILY AV report only all year
SUMFlow, in conduit or thru treatment plantANNL AVG <= 7 MGD all year
SUMFlow, in conduit or thru treatment plant2P <= 16667 gal/min all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)AVERAGE report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)AVERAGE report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1NOEC Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)AVERAGE report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1NOEC Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Americamysis bahia (formerly Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1LOEC Lethal Survival Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Americamysis bahia (Mysidopsis bahia)MO AV MN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidia7 DA MIN report only all year
TX1LOEC Sub-Lethal Reproduction Static Renewal 7 Day Chronic Menidia menidiaMO AV MN report only all year
TXALC50 Pass/Fail Static 24Hr Acute Americamysis bahia (formerly Mysidopsis bahia)SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute Menidia menidiaSINGSAMP 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