Austin, City of

NPDES permit AR0038369 · Minor POTW · administratively continued, expires 2024-01-31 · EPA's file as of 2026-09-19

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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 2024-01-31 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

19values over a limit
0required values missing, on 0 form(s)
8of 22 forms filed late

Last period with anything received: 2026-07-31. Most often over: Nitrogen, ammonia total [as N] (7), Solids, total suspended (6), Coliform, fecal general (3).

Reporting

Reports are due about 25 days after each monitoring period ends (read off this permit's own late-day counts in EPA's filings).

Limits in force (72)

OutfallParameterStatisticLimitMonths
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]INST MIN >= 4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Oxygen, dissolved [DO]INST MIN >= 5 mg/L May, Jun, Jul, Aug, Sep, Oct
001Oxygen, dissolved [DO]INST MIN >= 4 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001pHMINIMUM >= 6 SU all year
001pHMINIMUM >= 6 SU all year
001pHMAXIMUM <= 9 SU all year
001pHMAXIMUM <= 9 SU all year
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 20 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 20 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 30 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspended7 DA AVG <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspended7 DA AVG <= 30 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspended7 DA AVG <= 30 mg/L May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspended7 DA AVG <= 45 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 34 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Solids, total suspendedMO AVG <= 22.7 lb/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 66.7 lb/d May, Jun, Jul, Aug, Sep, Oct
001Solids, total suspendedMO AVG <= 100.1 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 10 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 5.6 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 5.6 mg/L Apr
001Nitrogen, ammonia total [as N]MO AVG <= 4 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 9 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 15 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]7 DA AVG <= 5.6 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 5.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 5.6 mg/L Apr
001Nitrogen, ammonia total [as N]7 DA AVG <= 5.6 mg/L May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]7 DA AVG <= 13.5 mg/L Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 11.3 lb/d Jan, Feb, Mar, Nov, Dec
001Nitrogen, ammonia total [as N]MO AVG <= 6.4 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 4.5 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 18.7 lb/d Apr
001Nitrogen, ammonia total [as N]MO AVG <= 13.3 lb/d May, Jun, Jul, Aug, Sep, Oct
001Nitrogen, ammonia total [as N]MO AVG <= 30 lb/d Jan, Feb, Mar, Nov, Dec
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantMO AVG report only all year
001Flow, in conduit or thru treatment plantDAILY MX report only all year
001Flow, in conduit or thru treatment plant7 DA AVG report only all year
001Chlorine, total residualINST MAX report only all year
001Chlorine, total residualINST MAX <= .011 mg/L all year
001E. coli7 DA GEO <= 410 #/100mL May, Jun, Jul, Aug, Sep
001E. coli7 DA GEO <= 2050 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001E. coli7 DA GEO <= 410 #/100mL May, Jun, Jul, Aug, Sep
001E. coli7 DA GEO <= 2050 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal generalMO GEO <= 200 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal generalMO GEO <= 1000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal generalMO GEO <= 200 #/100mL Apr, May, Jun, Jul, Aug, Sep
001Coliform, fecal generalMO GEO <= 1000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal general7 DA AVG <= 400 #/100mL May, Jun, Jul, Aug, Sep
001Coliform, fecal general7 DA GEO <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001Coliform, fecal general7 DA GEO <= 400 #/100mL Apr, May, Jun, Jul, Aug, Sep
001Coliform, fecal general7 DA GEO <= 2000 #/100mL Jan, Feb, Mar, Apr, Oct, Nov, Dec
001OverflowsMO TOTAL report only all year
001OverflowsMO TOTAL report only all year
001Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
001Overflow volume [SS0 volume, CSO volume]MO TOTAL report only all year
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 25 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 15 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 20 mg/L Jan, Feb, Mar, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 23 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 38 mg/L Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 23 mg/L May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]7 DA AVG <= 30 mg/L Jan, Feb, Mar, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 17 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 28.4 lb/d Jan, Feb, Mar, Apr, Nov, Dec
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 50 lb/d May, Jun, Jul, Aug, Sep, Oct
001BOD, carbonaceous [5 day, 20 C]MO AVG <= 66.7 lb/d Jan, Feb, Mar, Nov, Dec

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