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Dequeen, City of

Sewage treatment plant, major discharger, De Queen, Arkansas. NPDES permit AR0021733 expired Mar 31, 2025; its limits still apply. Last 12 months: over a limit 10 times (last September 2026), 28 required values missing, 3 of 16 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: outfall 001 form A monthly (28 values), outfall TX1 form Q quarterly (14 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
6 values over a limit, 0 required values missing, 0 of 16 reports late

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

Period endingParameterReportedLimitOver by
October 2025Nitrogen, ammonia total [as N], 7-day average3.23 mg/L≤ 3 mg/L8%
January 2026Copper, total recoverable, monthly average13.8 ug/L≤ 12.2 ug/L13%
February 2026Nitrogen, nitrate total [as NO3], monthly average10.6 mg/L≤ 10 mg/L6%
May 2026Copper, total recoverable, monthly average17.2 ug/L≤ 12.2 ug/L41%
June 2026Chlorine, total residual, instantaneous maximum.25 mg/L≤ .011 mg/L2173%
June 2026Copper, total recoverable, monthly average14.1 ug/L≤ 12.2 ug/L16%
July 2026Copper, total recoverable, monthly average18.4 ug/L≤ 12.2 ug/L51%
August 2026Copper, total recoverable, monthly average17.5 ug/L≤ 12.2 ug/L43%
September 2026Copper, total recoverable, monthly average.418 lb/d≤ .407 lb/d3%
September 2026Copper, total recoverable, monthly average23 ug/L≤ 12.2 ug/L89%

Limits in force (54)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/LMay–Oct001
Oxygen, dissolved [DO]instantaneous minimum≥ 8 mg/LJan, Feb, Mar, Apr, Nov, Dec001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Solids, total suspended7-day average≤ 22.5 mg/Lall year001
Solids, total suspendedmonthly average≤ 500.4 lb/dall year001
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LApr001
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 2 mg/LMay–Oct001
Nitrogen, ammonia total [as N]7-day average≤ 6.1 mg/LApr001
Nitrogen, ammonia total [as N]7-day average≤ 7.5 mg/LJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]7-day average≤ 3 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 80.1 lb/dApr001
Nitrogen, ammonia total [as N]monthly average≤ 166.8 lb/dJan, Feb, Mar, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 66.7 lb/dMay–Oct001
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year001
Phosphorus, total [as P]7-day average≤ 2 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 33.4 lb/dall year001
Copper, total recoverablemonthly average≤ 12.2 ug/Lall year001
Copper, total recoverable7-day average≤ 24.5 ug/Lall year001
Copper, total recoverablemonthly average≤ .407 lb/dall 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
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year001
Nitrogen, nitrate total [as NO3]monthly average≤ 10 mg/Lall year001
Nitrogen, nitrate total [as NO3]7-day average≤ 15 mg/Lall year001
Nitrogen, nitrate total [as NO3]monthly average≤ 333.6 lb/dall year001
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay–Sep001
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec001
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Sep001
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec001
Overflowsmonthly totalreport only (occur/mo)all year001
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 12 mg/LMay–Oct001
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 266.9 lb/dMay–Oct001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 333.6 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 100 %all yearTX1
Whole Effluent Toxicity [WET] - C. dubia7-day minimum≥ 80 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 100 %all yearTX1
Whole Effluent Toxicity [WET] - P. promelas7-day minimum≥ 80 %all yearTX1
Pass/Fail Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Pass/Fail Static Renewal 7Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (pass=0;fail=1)all yearTX1
Low Flow Pass/Fail Survival Test Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (pass=0;fail=1)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelas7-day minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Ceriodaphnia dubia7-day minimumreport only (%)all yearTX1
Coef Of Var Static Renewal 7Day Chronic Pimephales promelas7-day minimumreport 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/AR0021733 · MCP: https://passage-data.com/mcp