UPPER TRINITY RGEGIONAL WATER DISTRICT

NPDES permit TX0125172 · Major POTW · effective, expires 2027-02-03 · EPA's file as of 2026-09-19

Check this month's numbers before you file

EPA's record, 2025-09-01 to 2026-08-31

12values over a limit
0required values missing, on 0 form(s)
0of 16 forms filed late

Last period with anything received: 2026-07-31. Most often over: Flow, in conduit or thru treatment plant (12).

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 (57)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 4 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Oxygen, dissolved [DO]MO MIN >= 5 mg/L Apr, May, Jun, Jul, Aug, Sep
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedDAILY AV <= 12 mg/L Apr, May, Jun, Jul, Aug, Sep
001Solids, total suspendedDAILY AV <= 15 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Solids, total suspendedDAILY MX <= 40 mg/L Apr, May, Jun, Jul, Aug, Sep
001Solids, total suspendedDAILY MX <= 40 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Solids, total suspendedDAILY AV <= 400 lb/d Apr, May, Jun, Jul, Aug, Sep
001Solids, total suspendedDAILY AV <= 500 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY AV <= 1.7 mg/L Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY AV <= 4 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 10 mg/L Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 10 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY AV <= 56 lb/d Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY AV <= 133 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001Phosphorus, total [as P]DAILY AV <= 1 mg/L 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 <= 4 MGD all year
001E. coliDAILY AV <= 126 MPN/100mL all year
001E. coliDAILY MX <= 399 MPN/100mL all year
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 10 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 5 mg/L Apr, May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 25 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY MX <= 20 mg/L Apr, May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 334 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 167 lb/d Apr, May, Jun, Jul, Aug, Sep
TX1Whole effluent toxicity - retest #17 DA MIN report only all year
TX1Whole effluent toxicity - retest #17 DA MIN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #1MO AV MN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN report only all year
TX1Whole effluent toxicity - retest #27 DA MIN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only all year
TX1Whole effluent toxicity - retest #2MO AV MN report only 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
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