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Portland Wastewater Treatment Plant, City of

Sewage treatment plant, Portland, Arkansas. NPDES permit AR0052876, in force until Apr 30, 2031. Last 12 months: no values over a limit, 3 of 14 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (4 values), form Q quarterly (23 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 2 of 12 reports late

Limits in force (33)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 5 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≤ 12.5 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≤ 37.5 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
Lead, total recoverablemonthly averagereport only (ug/L)all year
Lead, total recoverable7-day averagereport only (ug/L)all year
Lead, total recoverablemonthly averagereport only (lb/d)all 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 #/100mLJul–Sep
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLOct–Dec
Coliform, fecal general30-day geometric mean≤ 200 #/100mLMay, Jun
Coliform, fecal general30-day geometric mean≤ 1000 #/100mLJan–Apr
Coliform, fecal general7-day geometric mean≤ 400 #/100mLJul–Sep
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLOct–Dec
Coliform, fecal general7-day geometric mean≤ 400 #/100mLMay, Jun
Coliform, fecal general7-day geometric mean≤ 2000 #/100mLJan–Apr
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/AR0052876 · MCP: https://passage-data.com/mcp