TRINITY RIVER AUTHORITY OF TEXAS

NPDES permit TX0022802 · Major POTW · administratively continued, expires 2025-04-15 · EPA's file as of 2026-09-19

Check this month's numbers before you file

This permit expired on 2025-04-15 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 49 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 (86)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 6 mg/L all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 15 mg/L all year
001Solids, total suspendedDAILY MX <= 40 mg/L all year
001Solids, total suspendedDAILY AV <= 23644 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 4 mg/L Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]DAILY AV <= 2 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
001Nitrogen, ammonia total [as N]DAILY AV <= 6305 lb/d Jan, Feb, Mar, Dec
001Nitrogen, ammonia total [as N]DAILY AV <= 3152 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
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 <= 281250 gal/min all year
001Flow, in conduit or thru treatment plantANNL AVG <= 189 MGD all year
001Chlorine, total residualINST MAX < .1 mg/L all year
001Chlorine, total residualMO MIN >= 1 mg/L all year
001E. coliDAILY AV <= 63 CFU/100mL all year
001E. coliDAILY MX <= 200 CFU/100mL all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 7 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 17 mg/L all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 11034 lb/d all year
002Oxygen, dissolved [DO]MO MIN >= 6 mg/L all year
002pHMINIMUM >= 6 SU all year
002pHMAXIMUM <= 9 SU all year
002Solids, total suspendedDAILY AV <= 15 mg/L all year
002Solids, total suspendedDAILY MX <= 40 mg/L all year
002Solids, total suspendedDAILY AV <= 438 lb/d all year
002Nitrogen, ammonia total [as N]DAILY AV <= 2 mg/L all year
002Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L all year
002Nitrogen, ammonia total [as N]DAILY AV <= 58 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 <= 11390 gal/min all year
002Flow, in conduit or thru treatment plantANNL AVG <= 3.5 MGD all year
002Chlorine, total residualINST MAX < .1 mg/L all year
002Chlorine, total residualMO MIN >= 1 mg/L all year
002E. coliDAILY AV <= 126 CFU/100mL all year
002E. coliDAILY MX <= 399 CFU/100mL all year
002BOD, carbonaceous [5 day, 20 C]DAILY AV <= 5 mg/L all year
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L all year
002BOD, carbonaceous [5 day, 20 C]DAILY AV <= 146 lb/d all year
003Oxygen, dissolved [DO]MO MIN >= 6 mg/L all year
003pHMINIMUM >= 6 SU all year
003pHMAXIMUM <= 9 SU all year
003Solids, total suspendedDAILY AV <= 15 mg/L all year
003Solids, total suspendedDAILY MX <= 40 mg/L all year
003Solids, total suspendedDAILY AV <= 23644 lb/d all year
003Nitrogen, ammonia total [as N]DAILY AV <= 2 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
003Nitrogen, ammonia total [as N]DAILY AV <= 4 mg/L Jan, Feb, Mar, Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
003Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Jan, Feb, Mar, Dec
003Nitrogen, ammonia total [as N]DAILY AV <= 3152 lb/d Apr, May, Jun, Jul, Aug, Sep, Oct, Nov
003Nitrogen, ammonia total [as N]DAILY AV <= 6305 lb/d Jan, Feb, Mar, Dec
003Flow, in conduit or thru treatment plantDAILY AV report only all year
003Flow, in conduit or thru treatment plantDAILY MX report only all year
003Flow, in conduit or thru treatment plant2P <= 281250 gal/min all year
003Flow, in conduit or thru treatment plantANNL AVG <= 189 MGD all year
003Chlorine, total residualINST MAX < .1 mg/L all year
003Chlorine, total residualMO MIN >= 1 mg/L all year
003E. coliDAILY AV <= 63 CFU/100mL all year
003E. coliDAILY MX <= 200 CFU/100mL all year
003BOD, carbonaceous [5 day, 20 C]DAILY AV <= 7 mg/L all year
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 17 mg/L all year
003BOD, carbonaceous [5 day, 20 C]DAILY AV <= 11034 lb/d all year
101Flow, in conduit or thru treatment plantANNL AVG <= 189 MGD all year
101Flow, in conduit or thru treatment plant2P <= 281250 gal/min all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX1IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN 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