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Swifton, City of

Sewage treatment plant, Swifton, Arkansas. NPDES permit AR0034860 expired Nov 30, 2025; its limits still apply. Last 12 months: over a limit 13 times (last March 2026), 50 required values missing, 6 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (19 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
33 values over a limit, 17 required values missing, 1 of 12 reports late

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

All 13 values over a limit
Period endingParameterReportedLimitOver by
November 2025Chlorine, total residual, instantaneous maximum.18 mg/L≤ .011 mg/L1536%
November 2025Coliform, fecal general, 7-day geometric mean> 2000 #/100mL≤ 2000 #/100mL—
November 2025Solids, total suspended, 7-day average66 mg/L≤ 30 mg/L120%
November 2025Solids, total suspended, monthly average21.41 lb/d≤ 18 lb/d19%
November 2025Solids, total suspended, monthly average39.5 mg/L≤ 20 mg/L98%
March 2026BOD, carbonaceous [5 day, 20 C], 7-day average31.6 mg/L≤ 30 mg/L5%
March 2026BOD, carbonaceous [5 day, 20 C], 7-day average31.6 mg/L≤ 30 mg/L5%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average29.9 mg/L≤ 20 mg/L50%
March 2026BOD, carbonaceous [5 day, 20 C], monthly average29.9 mg/L≤ 20 mg/L50%
March 2026Solids, total suspended, 7-day average60 mg/L≤ 30 mg/L100%
March 2026Solids, total suspended, 7-day average60 mg/L≤ 30 mg/L100%
March 2026Solids, total suspended, monthly average60 mg/L≤ 20 mg/L200%
March 2026Solids, total suspended, monthly average60 mg/L≤ 20 mg/L200%

Limits in force (26)

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≤ 18 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 12 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≤ 14.7 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≤ 7.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10.8 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 4.7 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 4.5 lb/dMay–Oct
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≤ 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≤ 18 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/AR0034860 · MCP: https://passage-data.com/mcp