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Brinkley, City of

Sewage treatment plant, Brinkley, Arkansas. NPDES permit AR0021890 expired May 31, 2026; its limits still apply. Last 12 months: over a limit 35 times (last September 2026), 44 required values missing, 4 of 12 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (22 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
49 values over a limit, 140 required values missing, 10 of 12 reports late

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

All 35 values over a limit
Period endingParameterReportedLimitOver by
October 2025Chlorine, total residual, instantaneous maximum.21 mg/L≤ .011 mg/L1809%
October 2025Chlorine, total residual, instantaneous maximum.21 mg/L≤ .011 mg/L1809%
November 2025Chlorine, total residual, instantaneous maximum.23 mg/L≤ .011 mg/L1991%
November 2025Chlorine, total residual, instantaneous maximum.23 mg/L≤ .011 mg/L1991%
January 2026Phosphorus, total [as P], monthly average7.8 lb/d≤ 5 lb/d56%
February 2026Oxygen, dissolved [DO], instantaneous minimum4.4 mg/L≥ 6 mg/L27%
February 2026Phosphorus, total [as P], monthly average5.4 lb/d≤ 5 lb/d8%
April 2026Chlorine, total residual, instantaneous maximum.05 mg/L≤ .011 mg/L355%
April 2026Coliform, fecal general, 7-day geometric mean2400 #/100mL≤ 2000 #/100mL20%
April 2026Oxygen, dissolved [DO], instantaneous minimum5.07 mg/L≥ 6 mg/L16%
April 2026Phosphorus, total [as P], monthly average6.5 lb/d≤ 5 lb/d30%
May 2026Chlorine, total residual, instantaneous maximum.06 mg/L≤ .011 mg/L445%
May 2026Coliform, fecal general, 30-day geometric mean> 2400 #/100mL≤ 1000 #/100mL—
May 2026Coliform, fecal general, 7-day geometric mean> 2400 #/100mL≤ 2000 #/100mL—
June 2026Chlorine, total residual, instantaneous maximum.06 mg/L≤ .011 mg/L445%
June 2026Coliform, fecal general, 30-day geometric mean1698 #/100mL≤ 1000 #/100mL70%
June 2026Coliform, fecal general, 7-day geometric mean> 2400 #/100mL≤ 2000 #/100mL—
June 2026Nitrogen, ammonia total [as N], 7-day average8.3 mg/L≤ 5.2 mg/L60%
June 2026Phosphorus, total [as P], monthly average5.26 lb/d≤ 5 lb/d5%
July 2026Chlorine, total residual, instantaneous maximum.07 mg/L≤ .011 mg/L536%
July 2026Coliform, fecal general, 30-day geometric mean2258.5 #/100mL≤ 1000 #/100mL126%
July 2026Coliform, fecal general, 7-day geometric mean> 2400 #/100mL≤ 2000 #/100mL—
August 2026BOD, carbonaceous [5 day, 20 C], 7-day average29 mg/L≤ 15 mg/L93%
August 2026BOD, carbonaceous [5 day, 20 C], monthly average< 11 mg/L≤ 10 mg/L10%
August 2026Chlorine, total residual, instantaneous maximum.31 mg/L≤ .011 mg/L2718%
August 2026Coliform, fecal general, 30-day geometric mean> 2400 #/100mL≤ 1000 #/100mL—
August 2026Coliform, fecal general, 7-day geometric mean> 2400 #/100mL≤ 2000 #/100mL—
August 2026Phosphorus, total [as P], 7-day average15 mg/L≤ 7.5 mg/L100%
August 2026Phosphorus, total [as P], monthly average12.4 lb/d≤ 5 lb/d148%
August 2026Phosphorus, total [as P], monthly average7.7 mg/L≤ 5 mg/L54%
September 2026Chlorine, total residual, instantaneous maximum.12 mg/L≤ .011 mg/L991%
September 2026Coliform, fecal general, 30-day geometric mean> 2400 #/100mL≤ 1000 #/100mL—
September 2026Coliform, fecal general, 7-day geometric mean> 2400 #/100mL≤ 2000 #/100mL—
September 2026Phosphorus, total [as P], monthly average23.7 lb/d≤ 5 lb/d374%
September 2026Phosphorus, total [as P], monthly average6.3 mg/L≤ 5 mg/L26%

Limits in force (29)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/LJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspended7-day average≤ 22.5 mg/Lall year
Solids, total suspendedmonthly average≤ 87.6 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 8 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 12 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 5.2 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 46.7 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 30.4 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 29 lb/dMay–Oct
Phosphorus, total [as P]monthly average≤ 5 mg/Lall year
Phosphorus, total [as P]7-day average≤ 7.5 mg/Lall year
Phosphorus, total [as P]monthly average≤ 5 lb/dall 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
Chlorine, total residualinstantaneous maximum≤ .011 mg/Lall year
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLall year
Overflowsmonthly totalreport only (occur/mo)all year
Overflow volume [SS0 volume, CSO volume]monthly totalreport only (gal)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 58 lb/dall year

How strict are these limits?

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

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Your permit document is the final word. As JSON: /api/v1/permits/AR0021890 · MCP: https://passage-data.com/mcp