RIVERBEND WATER RESOURCES DISTRICT

NPDES permit TX0126098 · Major POTW · administratively continued, expires 2026-05-17 · 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 2026-05-17 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 29 forms filed late

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

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 (94)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 5 mg/L all year
001Oxygen demand, chem. [high level] [COD]DAILY MX report only 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 <= 40 mg/L all year
001Solids, total suspendedDAILY AV <= 151 lb/d all year
001Solids, total suspendedDAILY MX <= 320 lb/d all year
001Oil & GreaseDAILY AV <= 10 mg/L all year
001Oil & GreaseDAILY MX <= 15 mg/L all year
001Oil & GreaseDAILY AV <= 79.4 lb/d all year
001Oil & GreaseDAILY MX <= 117 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 5 mg/L all year
001Nitrogen, ammonia total [as N]DAILY MX <= 10 mg/L all year
001Nitrogen, ammonia total [as N]DAILY AV <= 62.5 lb/d all year
001Nitrogen, ammonia total [as N]DAILY MX <= 125 lb/d all year
001Phosphate, total [as PO4]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 AV <= .019 mg/L all year
001Copper, total [as Cu]DAILY MX <= .04 mg/L all year
001Copper, total [as Cu]DAILY AV <= .238 lb/d all year
001Copper, total [as Cu]DAILY MX <= .501 lb/d all year
001Lead, total [as Pb]DAILY MX report only all year
001Nickel, total [as Ni]DAILY MX report only all year
001Silver, total [as Ag]DAILY AV <= .0034 mg/L all year
001Silver, total [as Ag]DAILY MX <= .0071 mg/L all year
001Silver, total [as Ag]DAILY AV <= .043 lb/d all year
001Silver, total [as Ag]DAILY MX <= .089 lb/d all year
001Aluminum, total [as Al]DAILY AV <= .835 mg/L all year
001Aluminum, total [as Al]DAILY MX <= 1.77 mg/L all year
001Aluminum, total [as Al]DAILY AV <= 10.45 lb/d all year
001Aluminum, total [as Al]DAILY MX <= 22.16 lb/d all year
001Flow, in conduit or thru treatment plantDAILY AV <= 1.5 MGD all year
001Flow, in conduit or thru treatment plantDAILY MX <= 3 MGD all year
001Chlorine, total residualDAILY AV <= .019 mg/L all year
001Chlorine, total residualDAILY MX <= .019 mg/L all year
001E. coliDAILY AV <= 126 CFU/100mL all year
001E. coliDAILY MX <= 394 CFU/100mL all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 10 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 125 lb/d all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 250 lb/d all year
101pHMINIMUM >= 6 SU all year
101pHMAXIMUM <= 9 SU all year
101Solids, total suspendedDAILY AV <= 80 lb/d all year
101Solids, total suspendedDAILY MX <= 159 lb/d all year
101Oil & GreaseDAILY AV <= 43.5 lb/d all year
101Oil & GreaseDAILY MX <= 64 lb/d all year
101Phosphate, total [as PO4]DAILY AV <= 24.3 lb/d all year
101Phosphate, total [as PO4]DAILY MX <= 48.6 lb/d all year
101Cyanide, total [as CN]DAILY AV <= .251 lb/d all year
101Cyanide, total [as CN]DAILY MX <= .467 lb/d all year
101Cadmium, total [as Cd]DAILY AV <= .206 lb/d all year
101Cadmium, total [as Cd]DAILY MX <= .471 lb/d all year
101Chromium, total [as Cr]DAILY AV <= 1.75 lb/d all year
101Chromium, total [as Cr]DAILY MX <= 3.27 lb/d all year
101Copper, total [as Cu]DAILY AV <= 1.87 lb/d all year
101Copper, total [as Cu]DAILY MX <= 3.47 lb/d all year
101Lead, total [as Pb]DAILY AV <= 1.3 lb/d all year
101Lead, total [as Pb]DAILY MX <= 2.54 lb/d all year
101Nickel, total [as Ni]DAILY AV <= 3.13 lb/d all year
101Nickel, total [as Ni]DAILY MX <= 6 lb/d all year
101Silver, total [as Ag]DAILY AV <= .199 lb/d all year
101Silver, total [as Ag]DAILY MX <= .38 lb/d all year
101Zinc, total [as Zn]DAILY AV <= 2.81 lb/d all year
101Zinc, total [as Zn]DAILY MX <= 5.5 lb/d all year
101Flow, in conduit or thru treatment plantDAILY AV <= .75 MGD all year
101Flow, in conduit or thru treatment plantDAILY MX <= 1.5 MGD all year
101Organics, total toxic [TTO]DAILY MX <= .747 lb/d all year
TX1Whole effluent toxicity - retest #148HR MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #248HR MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1Whole Effluent Toxicity [WET] - D. pulex48HR MIN >= 100 % all year
TX1Whole Effluent Toxicity [WET] - D. pulexMO AV MN >= 100 % all year
TX1Whole Effluent Toxicity [WET] - P. promelas48HR MIN >= 100 % all year
TX1Whole Effluent Toxicity [WET] - P. promelasMO AV MN >= 100 % all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulex48HR MIN report only all year
TX1Low Flow Pass/Fail Static Renewal 48Hr Acute Daphnia pulexMO AV MN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LF Pass/Fail Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TX1NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulex48HR MIN report only all year
TX1NOAEC Lethal Statis Renewal 48 Hr Acute Daphnia pulexMO AV MN report only all year
TX1NOAEC Lethal Static Renewal 48Hr acute Pimephales promelas48HR MIN report only all year
TX1NOAEC Lethal Static Renewal 48Hr acute Pimephales promelasMO AV MN report only all year
TX1LOAEC Lethal Static Renewal 48HR Acute Daphnia pulex48HR MIN report only all year
TX1LOAEC Lethal Static Renewal 48HR Acute Daphnia pulexMO AV MN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelas48HR MIN report only all year
TX1LOAEC Lethal Survival Static Renewal 48Hr Acute Pimephales promelasMO AV MN report only all year
TXAWhole effluent toxicity - retest #1SINGSAMP report only all year
TXAWhole effluent toxicity - retest #2SINGSAMP report only all year
TXALC50 Pass/Fail Static 24Hr Acute D. PulexSINGSAMP 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