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Ravenden, city of

Sewage treatment plant, Ravenden, Arkansas. NPDES permit AR0041254 expired Apr 30, 2025; its limits still apply. Last 12 months: over a limit 6 times (last November 2025). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (27 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
4 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
November 2025Coliform, fecal general, 30-day geometric mean240 #/100mL≤ 200 #/100mL20%
November 2025Coliform, fecal general, 7-day geometric mean240 #/100mL≤ 200 #/100mL20%
November 2025Oxygen, dissolved [DO], instantaneous minimum5.61 mg/L≥ 6 mg/L7%
November 2025Solids, total suspended, 7-day average30 mg/L≤ 22.5 mg/L33%
November 2025Solids, total suspended, monthly average30 mg/L≤ 15 mg/L100%
November 2025Solids, total suspended, monthly average9.27 lb/d≤ 9 lb/d3%

Limits in force (33)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 6 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≤ 9 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 3.9 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 3.9 mg/LApr
Nitrogen, ammonia total [as N]7-day average≤ 15 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 10.3 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 2.4 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ 6 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 6 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]7-day averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (lb/d)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]7-day averagereport only (mg/L)all year
Phosphorus, total [as P]monthly 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
Nitrogen, nitrate total [as NO3]monthly averagereport only (mg/L)all year
Nitrogen, nitrate total [as NO3]7-day averagereport only (mg/L)all year
Nitrogen, nitrate total [as NO3]monthly averagereport only (lb/d)all year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 200 #/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≤ 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≤ 6 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/AR0041254 · MCP: https://passage-data.com/mcp