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Gravette, City of

Sewage treatment plant, Gravette, Arkansas. NPDES permit AR0023833, in force until Jun 30, 2029. Last 12 months: over a limit 5 times (last March 2026), 2 of 11 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (25 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
8 values over a limit, 0 required values missing, 1 of 12 reports late

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

Period endingParameterReportedLimitOver by
February 2026BOD, carbonaceous [5 day, 20 C], 7-day average15.5 mg/L≤ 15 mg/L3%
February 2026BOD, carbonaceous [5 day, 20 C], monthly average12.5 mg/L≤ 10 mg/L25%
February 2026Solids, total suspended, 7-day average28.5 mg/L≤ 23 mg/L24%
February 2026Solids, total suspended, monthly average23.9 mg/L≤ 15 mg/L59%
March 2026Oxygen, dissolved [DO], instantaneous minimum2.42 mg/L≥ 3 mg/L19%

Limits in force (28)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 15 mg/Lall year
Solids, total suspended7-day average≤ 23 mg/Lall year
Solids, total suspendedmonthly average≤ 70.1 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 6 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 12 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]7-day average≤ 9 mg/LMay–Oct
Nitrogen, ammonia total [as N]7-day average≤ 18 mg/LJan, Feb, Mar, Apr, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 28 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 56 lb/dJan, Feb, Mar, Apr, Nov, Dec
Nitrite + Nitrate total [as N]monthly average≤ 10 mg/Lall year
Nitrite + Nitrate total [as N]7-day average≤ 10 mg/Lall year
Nitrite + Nitrate total [as N]monthly average≤ 46.7 lb/dall year
Phosphorus, total [as P]monthly average≤ 1 mg/Lall year
Phosphorus, total [as P]7-day average≤ 2 mg/Lall year
Phosphorus, total [as P]monthly average≤ 4.7 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
Chlorine, total residualinstantaneous maximumreport only (mg/L)all year
Coliform, fecal general30-day geometric mean≤ 200 #/100mLall year
Coliform, fecal general7-day geometric mean≤ 400 #/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≤ 46.7 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/AR0023833 · MCP: https://passage-data.com/mcp