ABILENE, CITY OF

NPDES permit TX0023973 · Major POTW · effective, expires 2031-05-15 · 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.

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

2values over a limit
0required values missing, on 0 form(s)
3of 53 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (2).

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 (142)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]MO MIN >= 5 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Oxygen, dissolved [DO]MO MIN >= 6 mg/L Apr, May, Jun, Jul, Aug, Sep
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 <= 2252 lb/d all year
001Nitrogen, ammonia total [as N]DAILY AV <= 2 mg/L Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY AV <= 3 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Jan, Feb, Mar, Oct, Nov, Dec
001Nitrogen, ammonia total [as N]DAILY AV <= 300 lb/d Apr, May, Jun, Jul, Aug, Sep
001Nitrogen, ammonia total [as N]DAILY AV <= 450 lb/d Jan, Feb, Mar, Oct, Nov, Dec
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 <= 16667 gal/min all year
001Flow, in conduit or thru treatment plantANNL AVG <= 18 MGD all year
001Chlorine, total residualINST MAX < .1 mg/L all year
001Chlorine, total residualMO MIN >= 1 mg/L all year
001E. coliDAILY AV <= 126 CFU/100mL all year
001E. coliDAILY MX <= 399 CFU/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 <= 7 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 <= 17 mg/L Apr, May, Jun, Jul, Aug, Sep
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 1501 lb/d Jan, Feb, Mar, Oct, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]DAILY AV <= 1051 lb/d Apr, May, Jun, Jul, Aug, Sep
002Oxygen, dissolved [DO]MO MIN >= 6 mg/L Apr, May, Jun, Jul, Aug, Sep
002Oxygen, dissolved [DO]MO MIN >= 5 mg/L Jan, Feb, Mar, Oct, Nov, Dec
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 <= 500 lb/d all year
002Nitrogen, ammonia total [as N]DAILY AV <= 2 mg/L Apr, May, Jun, Jul, Aug, Sep
002Nitrogen, ammonia total [as N]DAILY AV <= 3 mg/L Jan, Feb, Mar, Oct, Nov, Dec
002Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Apr, May, Jun, Jul, Aug, Sep
002Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Jan, Feb, Mar, Oct, Nov, Dec
002Nitrogen, ammonia total [as N]DAILY AV <= 67 lb/d Apr, May, Jun, Jul, Aug, Sep
002Nitrogen, ammonia total [as N]DAILY AV <= 100 lb/d Jan, Feb, Mar, Oct, Nov, Dec
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 plantANNL AVG <= 4 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 <= 10 mg/L Jan, Feb, Mar, Oct, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]DAILY AV <= 7 mg/L Apr, May, Jun, Jul, Aug, Sep
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 25 mg/L Jan, Feb, Mar, Oct, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]DAILY MX <= 17 mg/L Apr, May, Jun, Jul, Aug, Sep
002BOD, carbonaceous [5 day, 20 C]DAILY AV <= 334 lb/d Jan, Feb, Mar, Oct, Nov, Dec
002BOD, carbonaceous [5 day, 20 C]DAILY AV <= 234 lb/d Apr, May, Jun, Jul, Aug, Sep
003Oxygen, dissolved [DO]MO MIN >= 5 mg/L Jan, Feb, Mar, Oct, Nov, Dec
003Oxygen, dissolved [DO]MO MIN >= 6 mg/L Apr, May, Jun, Jul, Aug, Sep
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 <= 876 lb/d all year
003Nitrogen, ammonia total [as N]DAILY AV <= 2 mg/L Apr, May, Jun, Jul, Aug, Sep
003Nitrogen, ammonia total [as N]DAILY AV <= 3 mg/L Jan, Feb, Mar, Oct, Nov, Dec
003Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Apr, May, Jun, Jul, Aug, Sep
003Nitrogen, ammonia total [as N]DAILY MX <= 7 mg/L Jan, Feb, Mar, Oct, Nov, Dec
003Nitrogen, ammonia total [as N]DAILY AV <= 117 lb/d Apr, May, Jun, Jul, Aug, Sep
003Nitrogen, ammonia total [as N]DAILY AV <= 175 lb/d Jan, Feb, Mar, Oct, Nov, Dec
003Phosphorus, total [as P]DAILY AV report only all year
003Phosphorus, total [as P]DAILY MX report only all year
003Phosphorus, total [as P]DAILY AV report only all year
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 plantANNL AVG <= 7 MGD all year
003Chlorine, total residualINST MAX < .1 mg/L all year
003Chlorine, total residualMO MIN >= 1 mg/L all year
003E. coliDAILY AV <= 126 CFU/100mL all year
003E. coliDAILY MX <= 399 CFU/100mL all year
003BOD, carbonaceous [5 day, 20 C]DAILY AV <= 10 mg/L Jan, Feb, Mar, Oct, Nov, Dec
003BOD, carbonaceous [5 day, 20 C]DAILY AV <= 7 mg/L Apr, May, Jun, Jul, Aug, Sep
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 25 mg/L Jan, Feb, Mar, Oct, Nov, Dec
003BOD, carbonaceous [5 day, 20 C]DAILY MX <= 17 mg/L Apr, May, Jun, Jul, Aug, Sep
003BOD, carbonaceous [5 day, 20 C]DAILY AV <= 584 lb/d Jan, Feb, Mar, Oct, Nov, Dec
003BOD, carbonaceous [5 day, 20 C]DAILY AV <= 409 lb/d Apr, May, Jun, Jul, Aug, Sep
101Solids, total suspendedDAILY AV <= 2414 lb/d all year
101Nitrogen, ammonia total [as N]DAILY AV <= 322 lb/d Apr, May, Jun, Jul, Aug, Sep
101Nitrogen, ammonia total [as N]DAILY AV <= 483 lb/d Jan, Feb, Mar, Oct, Nov, Dec
101Flow, in conduit or thru treatment plantANNL AVG <= 19.3 MGD all year
101BOD, carbonaceous [5 day, 20 C]DAILY AV <= 1610 lb/d Jan, Feb, Mar, Oct, Nov, Dec
101BOD, carbonaceous [5 day, 20 C]DAILY AV <= 1127 lb/d Apr, May, Jun, Jul, Aug, Sep
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
TX2IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX2IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX2IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX2IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX2IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX2IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX2IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX2IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX2IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX2IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX3IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX3IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX3IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX3IC25 Low Flow Pass/Fail Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX3IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX3IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX3IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX3IC25 Low Flow Pass/Fail Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX3IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX3IC25 Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX3IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX3IC25 Lethal Static Renewal 7 Day Chronic Pimephales promelasMO AV MN report only all year
TX3IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7 DA MIN report only all year
TX3IC25 Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaMO AV MN report only all year
TX3IC25 Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7 DA MIN report only all year
TX3IC25 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
TXBLC50 Pass/Fail Static 24Hr Acute D. PulexSINGSAMP report only all year
TXBLC50 Pass/Fail Static 24Hr Acute Pimephales promelasSINGSAMP report only all year
TXCLC50 Pass/Fail Static 24Hr Acute D. PulexSINGSAMP report only all year
TXCLC50 Pass/Fail Static 24Hr Acute Pimephales promelasSINGSAMP report only all year

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