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Sebastian Lake Utility Operating Company, LLC - Sebastian Lake Public Water

Sewerage Systems, Hackett, Arkansas. NPDES permit AR0051039, in force until May 31, 2031. Last 12 months: no values over a limit, 3 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 25 days after each period: form A monthly (6 values), form Q quarterly (11 values), form F quarterly
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 1 of 21 reports late

Limits in force (37)

ParameterStatisticLimitMonths
Temperature, water deg. centigrademaximumreport only (deg C)all year
Flow ratemonthly averagereport only (%)all year
Flow ratedaily maximumreport only (%)all year
Oxygen, dissolved [DO]instantaneous minimum≥ 3 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 5 lb/dall year
Solids, total suspendeddaily maximum≤ 7.5 lb/dall year
Nitrogen, ammonia total [as N]monthly average≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 15 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 5.6 mg/LApr
Nitrogen, ammonia total [as N]daily maximum≤ 7.5 mg/LMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 16.7 mg/LJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .93 lb/dApr
Nitrogen, ammonia total [as N]monthly average≤ .83 lb/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 2.5 lb/dJan, Feb, Mar, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ .93 lb/dApr
Nitrogen, ammonia total [as N]daily maximum≤ 1.3 lb/dMay–Oct
Nitrogen, ammonia total [as N]daily maximum≤ 3.8 lb/dJan, Feb, Mar, Nov, Dec
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
E. coli30-day geometric mean≤ 630 #/100mLall year
E. coli7-day geometric mean≤ 2050 #/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≤ 25 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 38 mg/LJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 23 mg/LMay–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 4.2 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 2.5 lb/dMay–Oct
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 6.3 lb/dJan, Feb, Mar, Apr, Nov, Dec
BOD, carbonaceous [5 day, 20 C]daily maximum≤ 3.8 lb/dMay–Oct

New limits from Jun 1, 2029

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, instantaneous maximum0.011 mg/Lnew0.04 mg/L (3 values)3.64×

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/AR0051039 · MCP: https://passage-data.com/mcp