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Gurdon, City of - Gurdon WWTP

Sewage treatment plant, Gurdon, Arkansas. NPDES permit AR0022551, in force until Oct 31, 2030. Last 12 months: over a limit 4 times (last May 2026), 7 of 14 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
8 values over a limit, 0 required values missing, 7 of 12 reports late

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

Period endingParameterReportedLimitOver by
November 2025Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
February 2026Coliform, fecal general, 7-day geometric mean> 2420 #/100mL≤ 2000 #/100mL—
April 2026Nitrogen, ammonia total [as N], 7-day average6.15 mg/L≤ 6.1 mg/L1%
May 2026Nitrogen, ammonia total [as N], monthly average5.3 mg/L≤ 5 mg/L6%

Limits in force (28)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 6 mg/LJan, Feb, Mar, Apr, Nov, Dec
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/LMay–Oct
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≤ 107.6 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 8 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 6.1 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 6.1 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≤ 6.1 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 35.9 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 57.4 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 43.8 lb/dApr
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≤ 200 #/100mLMay–Sep
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay–Sep
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLJan, Feb, Mar, Apr, Oct, Nov, Dec
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≤ 71.7 lb/dall year

New limits from Nov 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum0.011 mg/Lnew0.33 mg/L (6 values)30×

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/AR0022551 · MCP: https://passage-data.com/mcp