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Caraway, City of

Sewage treatment plant, Caraway, Arkansas. NPDES permit AR0020028 expired Jun 30, 2024; its limits still apply. Last 12 months: over a limit 10 times (last July 2026). 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
8 values over a limit, 0 required values missing, 0 of 12 reports late

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

Period endingParameterReportedLimitOver by
October 2025BOD, carbonaceous [5 day, 20 C], 7-day average39.6 mg/L≤ 22.5 mg/L76%
October 2025BOD, carbonaceous [5 day, 20 C], monthly average23.6 mg/L≤ 15 mg/L57%
October 2025Coliform, fecal general, 7-day geometric mean3090 #/100mL≤ 2000 #/100mL55%
October 2025Solids, total suspended, monthly average18.5 mg/L≤ 15 mg/L23%
November 2025Solids, total suspended, monthly average16.5 mg/L≤ 15 mg/L10%
November 2025pH, minimum5.74 SU≥ 6 SU—
February 2026pH, minimum5.86 SU≥ 6 SU—
March 2026pH, minimum5.59 SU≥ 6 SU—
April 2026Coliform, fecal general, 7-day geometric mean2164 #/100mL≤ 2000 #/100mL8%
July 2026Coliform, fecal general, 7-day geometric mean2024 #/100mL≤ 2000 #/100mL1%

Limits in force (25)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall year
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≤ 18.8 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 11 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 5.2 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 4 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≤ 6 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 13.8 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 6.5 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 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 maximumreport only (mg/L)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≤ 15 mg/Lall year
BOD, carbonaceous [5 day, 20 C]7-day average≤ 22.5 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 18.8 lb/dall year

How strict are these limits?

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

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/AR0020028 · MCP: https://passage-data.com/mcp