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Sewage treatment plant, Pine Bluff, Arkansas. NPDES permit AR0041602 expired Jan 31, 2025; its limits still apply. Last 12 months: over a limit 17 times (last July 2026), 14 of 19 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (4 values), form Q quarterly (10 values), form F quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
6 values over a limit, 86 required values missing, 20 of 21 reports late

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

All 17 values over a limit
Period endingParameterReportedLimitOver by
December 2025Coliform, fecal general, 7-day geometric mean> 2419.6 #/100mL≤ 2000 #/100mL—
December 2025Solids, total suspended, 7-day average48 mg/L≤ 30 mg/L60%
December 2025Solids, total suspended, monthly average32 mg/L≤ 20 mg/L60%
April 2026Nitrogen, ammonia total [as N], 7-day average36 mg/L≤ 6.1 mg/L490%
April 2026Nitrogen, ammonia total [as N], monthly average1.4 lb/d≤ .6 lb/d133%
April 2026Nitrogen, ammonia total [as N], monthly average36 mg/L≤ 6.1 mg/L490%
June 2026BOD, carbonaceous [5 day, 20 C], 7-day average110 mg/L≤ 30 mg/L267%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average110 mg/L≤ 20 mg/L450%
June 2026BOD, carbonaceous [5 day, 20 C], monthly average7 lb/d≤ 2 lb/d250%
June 2026Coliform, fecal general, 30-day geometric mean> 4800 #/100mL≤ 1000 #/100mL—
June 2026Coliform, fecal general, 7-day geometric mean> 4800 #/100mL≤ 2000 #/100mL—
June 2026Solids, total suspended, 7-day average240 mg/L≤ 30 mg/L700%
June 2026Solids, total suspended, monthly average15.2 lb/d≤ 2 lb/d660%
June 2026Solids, total suspended, monthly average240 mg/L≤ 20 mg/L1100%
July 2026Nitrogen, ammonia total [as N], 7-day average180 mg/L≤ 7.5 mg/L2300%
July 2026Nitrogen, ammonia total [as N], monthly average11.4 lb/d≤ .5 lb/d2180%
July 2026Nitrogen, ammonia total [as N], monthly average180 mg/L≤ 5 mg/L3500%

Limits in force (25)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/LMay–Oct
Oxygen, dissolved [DO]instantaneous minimum≥ 2 mg/LJan, Feb, Mar, Apr, Nov, Dec
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspended7-day average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 2 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 6.1 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 6.1 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 7.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 17 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .6 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ .5 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.2 lb/dJan, Feb, Mar, Nov, Dec
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all 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≤ 20 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 30 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2 lb/dall year

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/AR0041602 · MCP: https://passage-data.com/mcp