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City of Savannah

Sewage treatment plant, major discharger, Savannah, Georgia. NPDES permit GA0020443, in force until Aug 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 46 days after each period: form 01 monthly (44 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 12 reports late

Limits in force (60)

ParameterStatisticLimitMonths
Oxygen demand, ultimatemonthly averagereport only (lb/d)Mar–Oct
Oxygen, dissolved [DO]minimum≥ 2 mg/Lall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 1126 lb/dall year
Solids, total suspendedweekly average≤ 1407 lb/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (lb/d)all year
Solids, total suspendedweekly averagereport only (lb/d)all year
Nitrogen, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, organic total [as N]monthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 17.4 mg/LNov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 13.6 mg/LMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 17.4 mg/LJan, Feb
Nitrogen, ammonia total [as N]weekly average≤ 26.1 mg/LNov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 20.4 mg/LMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 26.1 mg/LJan, Feb
Nitrogen, ammonia total [as N]monthly average≤ 653 lb/dNov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 510 lb/dMar–Oct
Nitrogen, ammonia total [as N]monthly average≤ 653 lb/dJan, Feb
Nitrogen, ammonia total [as N]weekly average≤ 816 lb/dNov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 637 lb/dMar–Oct
Nitrogen, ammonia total [as N]weekly average≤ 816 lb/dJan, Feb
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphate, ortho [as P]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 4.5 MGDall year
Flow, in conduit or thru treatment plantweekly average≤ 5.6 MGDall year
Chlorine, total residualmaximum≤ .75 mg/Lall year
Enterococcimonthly geometric mean≤ 35 #/100mLall year
Enterococciweekly geometric mean≤ 130 #/100mLall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
Solids, sludge, total, dry weightmonthly totalreport only (dry ton)all year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LNov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 mg/LMar–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/LJan, Feb
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/LNov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 30 mg/LMar–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 40 mg/LJan, Feb
BOD, carbonaceous [5 day, 20 C]monthly average≤ 938 lb/dNov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 751 lb/dMar–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 938 lb/dJan, Feb
BOD, carbonaceous [5 day, 20 C]weekly average≤ 1173 lb/dNov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 938 lb/dMar–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 1173 lb/dJan, Feb
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (mg/L)all year
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (lb/d)all year
BOD, carbonaceous [5 day, 20 C]weekly averagereport only (lb/d)all year
BOD, carbonaceous, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
LC50 Static Renewal 96Hr Acute Ceriodaphnia dubiaminimumreport only (%)all year
LC50 Static Renewal 96Hr Acute Americamysis bahia (formerly Mysidopsis bahia)minimumreport only (%)all year
LC50 Static Renewal 96Hr Acute Menidiaminimumreport only (%)all year
LC50 Static Renewal 96Hr Acute Pimephales promelasminimumreport only (%)all year

New limits from Sep 1, 2028

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chlorine, total residual, maximum0.5 mg/Ltighter——

How strict are these limits?

Cited limits by parameter: Georgia'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/GA0020443 · MCP: https://passage-data.com/mcp