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Cobb County Water System

Sewage treatment plant, major discharger, Kennesaw, Georgia. NPDES permit GA0046761, in force until Dec 31, 2027. Last 12 months: over a limit 4 times (last September 2026), 3 of 24 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form B1 monthly (42 values), outfall 002 form B2 monthly (9 values)
Renewal application due
Jul 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
12 values over a limit, 0 required values missing, 2 of 24 reports late

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

Period endingParameterReportedLimitOver by
July 2026Nitrogen, ammonia total [as N], monthly average< .82 mg/L≤ .6 mg/L37%
July 2026Nitrogen, ammonia total [as N], weekly average< 135.5 lb/d≤ 75.1 lb/d80%
July 2026Nitrogen, ammonia total [as N], weekly average< 2.65 mg/L≤ .9 mg/L194%
September 2026Nitrogen, ammonia total [as N], monthly average.79 mg/L≤ .6 mg/L32%

Limits in force (51)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedmonthly average≤ 5 mg/Lall year001
Solids, total suspendedweekly average≤ 7.5 mg/Lall year001
Solids, total suspendedmonthly average≤ 500 lb/dall year001
Solids, total suspendedweekly average≤ 625 lb/dall year001
Solids, total suspendedmonthly averagereport only (mg/L)all year001
Solids, total suspendedweekly averagereport only (mg/L)all year001
Solids, total suspendedmonthly averagereport only (lb/d)all year001
Solids, total suspendedweekly averagereport only (lb/d)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, organic total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]monthly average≤ .6 mg/Lall year001
Nitrogen, ammonia total [as N]weekly average≤ .9 mg/Lall year001
Nitrogen, ammonia total [as N]monthly average≤ 60 lb/dall year001
Nitrogen, ammonia total [as N]weekly average≤ 75.1 lb/dall year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ .16 mg/Lall year001
Phosphorus, total [as P]weekly average≤ .2 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 16 lb/dall year001
Phosphorus, total [as P]weekly average≤ 20 lb/dall year001
Phosphate, ortho [as P]monthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly average≤ 12 MGDall year001
Flow, in conduit or thru treatment plantweekly average≤ 15 MGDall year001
Chlorine, total residualmaximum≤ .02 mg/Lall year001
E. colimonthly geometric mean≤ 126 #/100mLall year001
E. coliweekly geometric mean≤ 410 #/100mLall year001
Solids, sludge, total, dry weightmonthly totalreport only (dry ton)all year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 3 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 4.5 mg/Lall year001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 300 lb/dall year001
BOD, carbonaceous [5 day, 20 C]weekly average≤ 375 lb/dall year001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year001
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year001
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (lb/d)all year001
BOD, carbonaceous, percent removalminimum≥ 85 %all year001
Solids, suspended percent removalminimum≥ 85 %all year001
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaminimumreport only (%)all year001
Noel Statre 7Day Chronic Pimephalesminimumreport only (%)all year001
Turbiditymaximum≤ 3 NTUall year002
pHminimum> 6 SUall year002
pHmaximum≤ 9 SUall year002
Solids, total suspendedmonthly average≤ 5 mg/Lall year002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year002
Flow, in conduit or thru treatment plantweekly averagereport only (MGD)all year002
E. colimonthly geometric mean≤ 20 #/100mLall year002
E. colimaximum≤ 75 #/100mLall year002
BOD, carbonaceous [5 day, 20 C]monthly average≤ 5 mg/Lall year002

How strict are these limits?

Cited limits by parameter: Georgia'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/GA0046761 · MCP: https://passage-data.com/mcp