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Stuttgart, City of

Sewage treatment plant, major discharger, Stuttgart, Arkansas. NPDES permit AR0034380 expired Feb 28, 2026; its limits still apply. Last 12 months: over a limit 124 times (last August 2026), 20 required values missing, 17 of 32 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form A1 monthly (20 values), outfall 001 form A2 monthly (19 values), outfall 001 form Q1 quarterly (3 values), outfall 001 form Q2 quarterly (9 values), outfall TX1 form Q quarterly (16 values), outfall 001 form Y1 yearly
Last report on file
August 2026
Oct 2024 – Sep 2025
111 values over a limit, 19 required values missing, 18 of 33 reports late

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

All 124 values over a limit
Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], daily maximum20.13 mg/L≤ 15 mg/L34%
October 2025BOD, carbonaceous [5 day, 20 C], daily maximum20.13 mg/L≤ 15 mg/L34%
October 2025BOD, carbonaceous [5 day, 20 C], monthly average13.44 mg/L≤ 10 mg/L34%
October 2025BOD, carbonaceous [5 day, 20 C], monthly average13.44 mg/L≤ 10 mg/L34%
October 2025Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
October 2025Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
October 2025Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
October 2025Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
October 2025Oxygen, dissolved [DO], instantaneous minimum5.6 mg/L≥ 6 mg/L7%
October 2025Oxygen, dissolved [DO], instantaneous minimum5.6 mg/L≥ 6 mg/L7%
October 2025Solids, total suspended, 7-day average243.7 mg/L≤ 22.5 mg/L983%
October 2025Solids, total suspended, 7-day average243.7 mg/L≤ 22.5 mg/L983%
October 2025Solids, total suspended, monthly average178.3 mg/L≤ 15 mg/L1089%
October 2025Solids, total suspended, monthly average178.3 mg/L≤ 15 mg/L1089%
October 2025Solids, total suspended, monthly average2432.8 lb/d≤ 437.9 lb/d456%
October 2025Solids, total suspended, monthly average2432.8 lb/d≤ 437.9 lb/d456%
November 2025BOD, carbonaceous [5 day, 20 C], daily maximum23.8 mg/L≤ 15 mg/L59%
November 2025BOD, carbonaceous [5 day, 20 C], monthly average19.6 mg/L≤ 10 mg/L96%
November 2025Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
November 2025Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
November 2025Solids, total suspended, 7-day average387.33 mg/L≤ 22.5 mg/L1621%
November 2025Solids, total suspended, monthly average218.53 mg/L≤ 15 mg/L1357%
November 2025Solids, total suspended, monthly average2545.3 lb/d≤ 437.9 lb/d481%
December 2025BOD, carbonaceous [5 day, 20 C], daily maximum59.4 mg/L≤ 15 mg/L296%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average40.53 mg/L≤ 10 mg/L305%
December 2025BOD, carbonaceous [5 day, 20 C], monthly average517.72 lb/d≤ 291.9 lb/d77%
December 2025Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
December 2025Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
December 2025Nitrogen, ammonia total [as N], 7-day average12.9 mg/L≤ 6 mg/L115%
December 2025Nitrogen, ammonia total [as N], monthly average5.54 mg/L≤ 4 mg/L39%
December 2025Oxygen, dissolved [DO], instantaneous minimum5.4 mg/L≥ 6 mg/L10%
December 2025Solids, total suspended, 7-day average300 mg/L≤ 22.5 mg/L1233%
December 2025Solids, total suspended, monthly average190.07 mg/L≤ 15 mg/L1167%
December 2025Solids, total suspended, monthly average2190.4 lb/d≤ 437.9 lb/d400%
January 2026BOD, carbonaceous [5 day, 20 C], daily maximum75.6 mg/L≤ 15 mg/L404%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average38.3 mg/L≤ 10 mg/L283%
January 2026BOD, carbonaceous [5 day, 20 C], monthly average439.71 lb/d≤ 291.9 lb/d51%
January 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
January 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
January 2026Nitrogen, ammonia total [as N], 7-day average8 mg/L≤ 6 mg/L33%
January 2026Nitrogen, ammonia total [as N], monthly average5.51 mg/L≤ 4 mg/L38%
January 2026Oxygen, dissolved [DO], instantaneous minimum5.36 mg/L≥ 6 mg/L11%
January 2026Solids, total suspended, 7-day average334 mg/L≤ 22.5 mg/L1384%
January 2026Solids, total suspended, monthly average183.7 mg/L≤ 15 mg/L1125%
January 2026Solids, total suspended, monthly average2144.05 lb/d≤ 437.9 lb/d390%
February 2026BOD, carbonaceous [5 day, 20 C], daily maximum76.9 mg/L≤ 15 mg/L413%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average38.9 mg/L≤ 10 mg/L289%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average469.73 lb/d≤ 291.9 lb/d61%
February 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
February 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
February 2026Nitrogen, ammonia total [as N], 7-day average6.6 mg/L≤ 6 mg/L10%
February 2026Nitrogen, ammonia total [as N], monthly average4.72 mg/L≤ 4 mg/L18%
February 2026Solids, total suspended, 7-day average282.33 mg/L≤ 22.5 mg/L1155%
February 2026Solids, total suspended, monthly average173.17 mg/L≤ 15 mg/L1054%
February 2026Solids, total suspended, monthly average2088.3 lb/d≤ 437.9 lb/d377%
March 2026BOD, carbonaceous [5 day, 20 C], daily maximum83.7 mg/L≤ 15 mg/L458%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average30.6 mg/L≤ 10 mg/L206%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average392.06 lb/d≤ 291.9 lb/d34%
March 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
March 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
March 2026Nitrogen, ammonia total [as N], 7-day average9.34 mg/L≤ 6 mg/L56%
March 2026Solids, total suspended, 7-day average228 mg/L≤ 22.5 mg/L913%
March 2026Solids, total suspended, monthly average174.43 mg/L≤ 15 mg/L1063%
March 2026Solids, total suspended, monthly average2287.2 lb/d≤ 437.9 lb/d422%
April 2026BOD, carbonaceous [5 day, 20 C], daily maximum207.6 mg/L≤ 15 mg/L1284%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average114.4 mg/L≤ 10 mg/L1044%
April 2026BOD, carbonaceous [5 day, 20 C], monthly average1296.5 lb/d≤ 291.9 lb/d344%
April 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
April 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
April 2026Nitrogen, ammonia total [as N], 7-day average20.9 mg/L≤ 5.2 mg/L302%
April 2026Nitrogen, ammonia total [as N], monthly average17.3 mg/L≤ 2.1 mg/L724%
April 2026Nitrogen, ammonia total [as N], monthly average202.4 lb/d≤ 61.3 lb/d230%
April 2026Oxygen, dissolved [DO], instantaneous minimum< 1 mg/L≥ 6 mg/L—
April 2026Solids, total suspended, 7-day average630 mg/L≤ 22.5 mg/L2700%
April 2026Solids, total suspended, monthly average407.8 mg/L≤ 15 mg/L2619%
April 2026Solids, total suspended, monthly average4174 lb/d≤ 437.9 lb/d853%
May 2026BOD, carbonaceous [5 day, 20 C], daily maximum244.5 mg/L≤ 15 mg/L1530%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average126.03 mg/L≤ 10 mg/L1160%
May 2026BOD, carbonaceous [5 day, 20 C], monthly average1478.45 lb/d≤ 291.9 lb/d406%
May 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
May 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
May 2026Nitrogen, ammonia total [as N], 7-day average14.1 mg/L≤ 5.2 mg/L171%
May 2026Nitrogen, ammonia total [as N], monthly average11.7 mg/L≤ 2.1 mg/L457%
May 2026Nitrogen, ammonia total [as N], monthly average211.6 lb/d≤ 61.3 lb/d245%
May 2026Oxygen, dissolved [DO], instantaneous minimum< 1 mg/L≥ 6 mg/L—
May 2026Solids, total suspended, 7-day average294.69 mg/L≤ 22.5 mg/L1210%
May 2026Solids, total suspended, monthly average159.65 mg/L≤ 15 mg/L964%
May 2026Solids, total suspended, monthly average2581.95 lb/d≤ 437.9 lb/d490%
June 2026BOD, carbonaceous [5 day, 20 C], daily maximum195.5 mg/L≤ 15 mg/L1203%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average121.95 mg/L≤ 10 mg/L1120%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average2231.91 lb/d≤ 291.9 lb/d665%
June 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
June 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
June 2026Nitrogen, ammonia total [as N], 7-day average17 mg/L≤ 5.2 mg/L227%
June 2026Nitrogen, ammonia total [as N], monthly average12.2 mg/L≤ 2.1 mg/L481%
June 2026Nitrogen, ammonia total [as N], monthly average222.8 lb/d≤ 61.3 lb/d263%
June 2026Oxygen, dissolved [DO], instantaneous minimum< 1 mg/L≥ 6 mg/L—
June 2026Solids, total suspended, 7-day average255 mg/L≤ 22.5 mg/L1033%
June 2026Solids, total suspended, monthly average213.11 mg/L≤ 15 mg/L1321%
June 2026Solids, total suspended, monthly average3688.02 lb/d≤ 437.9 lb/d742%
July 2026BOD, carbonaceous [5 day, 20 C], daily maximum226.53 mg/L≤ 15 mg/L1410%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average1006.4 lb/d≤ 291.9 lb/d245%
July 2026BOD, carbonaceous [5 day, 20 C], monthly average113.21 mg/L≤ 10 mg/L1032%
July 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
July 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
July 2026Nitrogen, ammonia total [as N], 7-day average20.1 mg/L≤ 5.2 mg/L287%
July 2026Nitrogen, ammonia total [as N], monthly average18.3 mg/L≤ 2.1 mg/L771%
July 2026Nitrogen, ammonia total [as N], monthly average193.23 lb/d≤ 61.3 lb/d215%
July 2026Oxygen, dissolved [DO], instantaneous minimum< 1 mg/L≥ 6 mg/L—
July 2026Solids, total suspended, 7-day average660 mg/L≤ 22.5 mg/L2833%
July 2026Solids, total suspended, monthly average350 mg/L≤ 15 mg/L2233%
July 2026Solids, total suspended, monthly average3724.74 lb/d≤ 437.9 lb/d751%
August 2026BOD, carbonaceous [5 day, 20 C], daily maximum347 mg/L≤ 15 mg/L2213%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average212.8 mg/L≤ 10 mg/L2028%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average2309.14 lb/d≤ 291.9 lb/d691%
August 2026Coliform, fecal general, 30-day geometric mean> 2420 #/100mL≤ 1000 #/100mL—
August 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
August 2026Nitrogen, ammonia total [as N], 7-day average22.33 mg/L≤ 5.2 mg/L329%
August 2026Nitrogen, ammonia total [as N], monthly average18.6 mg/L≤ 2.1 mg/L786%
August 2026Nitrogen, ammonia total [as N], monthly average194.6 lb/d≤ 61.3 lb/d217%
August 2026Oxygen, dissolved [DO], instantaneous minimum< 1 mg/L≥ 6 mg/L—
August 2026Solids, total suspended, 7-day average288.33 mg/L≤ 22.5 mg/L1181%
August 2026Solids, total suspended, monthly average193.92 mg/L≤ 15 mg/L1193%
August 2026Solids, total suspended, monthly average2021.14 lb/d≤ 437.9 lb/d362%

Limits in force (79)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year001
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/Lall year001
pHminimum≥ 6 SUall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Solids, total suspended7-day average≤ 22.5 mg/Lall year001
Solids, total suspended7-day average≤ 22.5 mg/Lall year001
Solids, total suspendedmonthly average≤ 437.9 lb/dall year001
Solids, total suspendedmonthly average≤ 250.2 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2.1 mg/LApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 4 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]7-day average≤ 5.2 mg/LApr–Oct001
Nitrogen, ammonia total [as N]7-day average≤ 6 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]7-day average≤ 5.2 mg/LApr–Oct001
Nitrogen, ammonia total [as N]7-day average≤ 6 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 61.3 lb/dApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 116.8 lb/dJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 35 lb/dApr–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 66.7 lb/dJan, Feb, Mar, Nov, Dec001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]7-day averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]7-day averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]7-day averagereport only (mg/L)all year001
Phosphorus, total [as P]7-day averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Phosphorus, total [as P]monthly averagereport only (lb/d)all year001
Copper, total recoverablemonthly average≤ 29.5 ug/Lall year001
Copper, total recoverablemonthly average≤ 29.5 ug/Lall year001
Copper, total recoverable7-day average≤ 59 ug/Lall year001
Copper, total recoverable7-day average≤ 59 ug/Lall year001
Copper, total recoverablemonthly average≤ .86 lb/dall year001
Copper, total recoverablemonthly average≤ .49 lb/dall year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year001
Peracetic Acidinstantaneous maximum≤ 1 mg/Lall year001
Peracetic Acidinstantaneous maximum≤ 1 mg/Lall year001
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year001
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year001
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLall year001
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLall year001
Overflowsmonthly totalreport only (occur/mo)all year001
Overflowsmonthly totalreport only (occur/mo)all year001
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year001
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 291.9 lb/dall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 166.8 lb/dall year001
Whole effluent toxicity - retest #1valuereport only (pass=0;fail=1)all yearTX1
Whole effluent toxicity - retest #2valuereport only (pass=0;fail=1)all yearTX1
WET, sublethal retest #1valuereport only (pass=0;fail=1)all yearTX1
WET, sublethal retest #2valuereport only (pass=0;fail=1)all yearTX1
Whole Effluent Toxicity - Retest #3valuereport only (pass=0;fail=1)all yearTX1
Whole Effluent Toxicity, Sub-Lethal Retest #3valuereport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7Day Chronic Pimephales promelasvaluereport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasvaluereport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubiavaluereport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Pimephales promelasvaluereport only (%)all yearTX1

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

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