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Parkdale, City of

Sewage treatment plant, Parkdale, Arkansas. NPDES permit AR0050997 expired Feb 28, 2026; its limits still apply. Last 12 months: over a limit 10 times (last June 2026), 9 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (24 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 5 of 12 reports late

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

Period endingParameterReportedLimitOver by
January 2026Oxygen, dissolved [DO], monthly average minimum1.72 mg/L≥ 2 mg/L14%
May 2026BOD, 5-day, 20 deg. C, 7-day average160 mg/L≤ 45 mg/L256%
May 2026BOD, 5-day, 20 deg. C, monthly average16.5 lb/d≤ 12 lb/d38%
May 2026BOD, 5-day, 20 deg. C, monthly average160 mg/L≤ 30 mg/L433%
May 2026Solids, total suspended, 7-day average280 mg/L≤ 135 mg/L107%
May 2026Solids, total suspended, monthly average280 mg/L≤ 90 mg/L211%
June 2026BOD, 5-day, 20 deg. C, monthly average45 mg/L≤ 30 mg/L50%
June 2026Coliform, fecal general, 30-day geometric mean210 #/100mL≤ 200 #/100mL5%
June 2026Solids, total suspended, 7-day average210 mg/L≤ 135 mg/L56%
June 2026Solids, total suspended, monthly average210 mg/L≤ 90 mg/L133%

Limits in force (26)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]monthly average minimum≥ 2 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. C7-day average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 12 lb/dall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 90 mg/Lall year
Solids, total suspended7-day average≤ 135 mg/Lall year
Solids, total suspendedmonthly average≤ 38 lb/dall year
Chloride [as Cl]monthly averagereport only (mg/L)all year
Chloride [as Cl]7-day averagereport only (mg/L)all year
Chloride [as Cl]monthly average≤ 22.1 lb/dall year
Sulfate, total [as SO4]monthly averagereport only (mg/L)all year
Sulfate, total [as SO4]7-day averagereport only (mg/L)all year
Sulfate, total [as SO4]monthly average≤ 17.1 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
Solids, total dissolvedmonthly averagereport only (mg/L)all year
Solids, total dissolved7-day averagereport only (mg/L)all year
Solids, total dissolvedmonthly average≤ 135.2 lb/dall 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

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/AR0050997 · MCP: https://passage-data.com/mcp