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Austin, City of

Sewage treatment plant, Austin, Arkansas. NPDES permit AR0038369 expired Jan 31, 2024; its limits still apply. Last 12 months: over a limit 19 times (last May 2026), 6 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (20 values), form A2 monthly (20 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
27 values over a limit, 40 required values missing, 8 of 24 reports late

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

All 19 values over a limit
Period endingParameterReportedLimitOver by
December 2025Nitrogen, ammonia total [as N], 7-day average16.7 mg/L≤ 15 mg/L11%
December 2025Nitrogen, ammonia total [as N], monthly average15.4 lb/d≤ 11.3 lb/d36%
December 2025Nitrogen, ammonia total [as N], monthly average16.7 mg/L≤ 10 mg/L67%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average33.13 lb/d≤ 28.4 lb/d17%
January 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
January 2026Coliform, fecal general, monthly geometric mean> 2420 #/100mL≤ 1000 #/100mL—
January 2026Nitrogen, ammonia total [as N], 7-day average21.7 mg/L≤ 15 mg/L45%
January 2026Nitrogen, ammonia total [as N], monthly average21.7 mg/L≤ 10 mg/L117%
January 2026Nitrogen, ammonia total [as N], monthly average29.5 lb/d≤ 11.3 lb/d161%
January 2026Solids, total suspended, monthly average31.5 mg/L≤ 30 mg/L5%
January 2026Solids, total suspended, monthly average42.8 lb/d≤ 34 lb/d26%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average40.11 lb/d≤ 28.4 lb/d41%
February 2026Coliform, fecal general, monthly geometric mean1700 #/100mL≤ 1000 #/100mL70%
February 2026E. coli, 7-day geometric mean> 2420 #/100mL≤ 2050 #/100mL—
February 2026Solids, total suspended, 7-day average46 mg/L≤ 45 mg/L2%
February 2026Solids, total suspended, monthly average46 mg/L≤ 30 mg/L53%
February 2026Solids, total suspended, monthly average83.9 lb/d≤ 34 lb/d147%
April 2026Nitrogen, ammonia total [as N], monthly average7.21 lb/d≤ 6.4 lb/d13%
May 2026Solids, total suspended, monthly average30.3 lb/d≤ 22.7 lb/d33%

Limits in force (72)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/LJan, Feb, Mar, Apr, Nov, Dec
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 4 mg/LJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 20 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 20 mg/LMay–Oct
Solids, total suspendedmonthly average≤ 30 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspended7-day average≤ 30 mg/LMay–Oct
Solids, total suspended7-day average≤ 30 mg/LMay–Oct
Solids, total suspended7-day average≤ 45 mg/LJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 34 lb/dJan, Feb, Mar, Apr, Nov, Dec
Solids, total suspendedmonthly average≤ 22.7 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 66.7 lb/dMay–Oct
Solids, total suspendedmonthly average≤ 100.1 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 9 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 15 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 5.6 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 5.6 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 13.5 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 11.3 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 6.4 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 4.5 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 18.7 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 13.3 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 30 lb/dJan, Feb, Mar, Nov, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plant7-day averagereport only (MGD)all year
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year
E. coli7-day geometric mean≤ 410 #/100mLMay–Sep
E. coli7-day geometric mean≤ 2050 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
E. coli7-day geometric mean≤ 410 #/100mLMay–Sep
E. coli7-day geometric mean≤ 2050 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLMay–Sep
Coliform, fecal generalmonthly geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLApr–Sep
Coliform, fecal generalmonthly geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal general7-day average≤ 400 #/100mLMay–Sep
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal general7-day geometric mean≤ 400 #/100mLApr–Sep
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Overflowsmonthly totalreport only (occur/mo)all year
Overflowsmonthly totalreport only (occur/mo)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]7-day average≤ 23 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 38 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]7-day average≤ 23 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]7-day average≤ 30 mg/LJan, Feb, Mar, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 17 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 28.4 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 50 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 66.7 lb/dJan, Feb, Mar, Nov, Dec

How strict are these limits?

Cited limits by parameter: Arkansas's rules and the federal ones.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0038369 · MCP: https://passage-data.com/mcp