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Blytheville, City of - South Treatment Facility

Sewage treatment plant, major discharger, Blytheville, Arkansas. NPDES permit AR0022578 expired Jun 30, 2024; its limits still apply. Last 12 months: over a limit 9 times (last August 2026), 5 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form A monthly (24 values), outfall 001 form A1 monthly (30 values), outfall TX1 form Q quarterly (18 values), outfall 001 form Y yearly
Last report on file
September 2026
Oct 2024 – Sep 2025
9 values over a limit, 0 required values missing, 0 of 29 reports late

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

Period endingParameterReportedLimitOver by
March 2026Mercury, total recoverable, monthly average.0131 ug/L≤ .013 ug/L1%
May 2026Mercury, total recoverable, 7-day average.055 ug/L≤ .027 ug/L104%
May 2026Mercury, total recoverable, monthly average.0002 lb/d≤ .00014 lb/d43%
May 2026Mercury, total recoverable, monthly average.055 ug/L≤ .013 ug/L323%
June 2026Mercury, total recoverable, 7-day average.796 ug/L≤ .027 ug/L2848%
June 2026Mercury, total recoverable, monthly average.0004 lb/d≤ .00014 lb/d186%
June 2026Mercury, total recoverable, monthly average.796 ug/L≤ .013 ug/L6023%
August 2026Mercury, total recoverable, monthly average.00017 lb/d≤ .00014 lb/d21%
August 2026Mercury, total recoverable, monthly average.0157 ug/L≤ .013 ug/L21%

Limits in force (78)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/Lall year001
Oxygen, dissolved [DO]instantaneous minimum≥ 7 mg/Lall year001
pHminimum≥ 6 SUall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspendedmonthly average≤ 30 mg/Lall year001
Solids, total suspended7-day average≤ 45 mg/Lall year001
Solids, total suspended7-day average≤ 45 mg/Lall year001
Solids, total suspendedmonthly average≤ 350 lb/dall year001
Solids, total suspendedmonthly average≤ 317.8 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/Lall year001
Nitrogen, ammonia total [as N]7-day average≤ 3 mg/Lall year001
Nitrogen, ammonia total [as N]7-day average≤ 3 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 23 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 21.2 lb/dall year001
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≤ 29.47 ug/Lall year001
Copper, total recoverablemonthly average≤ 29.47 ug/Lall year001
Copper, total recoverable7-day average≤ 59.14 ug/Lall year001
Copper, total recoverable7-day average≤ 59.14 ug/Lall year001
Copper, total recoverablemonthly average≤ .35 lb/dall year001
Copper, total recoverablemonthly average≤ .31 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
Mercury, total recoverablemonthly average≤ .013 ug/Lall year001
Mercury, total recoverablemonthly average≤ .013 ug/Lall year001
Mercury, total recoverable7-day average≤ .027 ug/Lall year001
Mercury, total recoverable7-day average≤ .027 ug/Lall year001
Mercury, total recoverablemonthly average≤ .00015 lb/dall year001
Mercury, total recoverablemonthly average≤ .00014 lb/dall 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≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 40 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 292 lb/dall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 264.8 lb/dall year001
Whole Effluent Toxicity [WET] - C. dubiadaily average minimum≥ 100 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 100 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubiadaily average minimum≥ 80 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 80 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelasdaily average minimum≥ 100 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 100 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelasdaily average minimum≥ 80 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 80 %all yearTX1
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day averagereport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7-day averagereport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day averagereport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day averagereport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day averagereport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day averagereport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day averagereport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day averagereport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7-day averagereport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7-day averagereport 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

Your permit document is the final word. As JSON: /api/v1/permits/AR0022578 · MCP: https://passage-data.com/mcp