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Macon Water Authority

Sewage treatment plant, major discharger, Macon, Georgia. NPDES permit GA0024546 expired Feb 28, 2023; its limits still apply. Last 12 months: over a limit 15 times (last September 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 46 days after each period: form 0 monthly (76 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
13 values over a limit, 0 required values missing, 0 of 12 reports late

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

All 15 values over a limit
Period endingParameterReportedLimitOver by
June 2026Nitrogen, ammonia total [as N], monthly average255 kg/d≤ 182 kg/d40%
June 2026Nitrogen, ammonia total [as N], monthly average3.42 mg/L≤ 1.7 mg/L101%
June 2026Nitrogen, ammonia total [as N], weekly average338 kg/d≤ 227 kg/d49%
June 2026Nitrogen, ammonia total [as N], weekly average4.19 mg/L≤ 2.6 mg/L61%
July 2026Nitrogen, ammonia total [as N], monthly average198 kg/d≤ 182 kg/d9%
July 2026Nitrogen, ammonia total [as N], monthly average2.78 mg/L≤ 1.7 mg/L64%
July 2026Nitrogen, ammonia total [as N], weekly average2.97 mg/L≤ 2.6 mg/L14%
August 2026Nitrogen, ammonia total [as N], monthly average378 kg/d≤ 182 kg/d108%
August 2026Nitrogen, ammonia total [as N], monthly average5.49 mg/L≤ 1.7 mg/L223%
August 2026Nitrogen, ammonia total [as N], weekly average463 kg/d≤ 227 kg/d104%
August 2026Nitrogen, ammonia total [as N], weekly average6.42 mg/L≤ 2.6 mg/L147%
August 2026Solids, suspended percent removal, minimum83.9 %≥ 85 %7%
September 2026Nitrogen, ammonia total [as N], monthly average2.67 mg/L≤ 1.7 mg/L57%
September 2026Nitrogen, ammonia total [as N], weekly average357 kg/d≤ 227 kg/d57%
September 2026Nitrogen, ammonia total [as N], weekly average5.2 mg/L≤ 2.6 mg/L100%

Limits in force (100)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 21 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 21 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 31.5 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 31.5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 2275 kg/dall year
BOD, 5-day, 20 deg. Cmonthly average≤ 2275 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 2843 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 2843 kg/dall year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (kg/d)all year
BOD, 5-day, 20 deg. Cmonthly averagereport only (kg/d)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (kg/d)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (kg/d)all year
pHminimum≥ 6 SUall year
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 3184 kg/dall year
Solids, total suspendedmonthly average≤ 3184 kg/dall year
Solids, total suspendedweekly average≤ 3980 kg/dall year
Solids, total suspendedweekly average≤ 3980 kg/dall year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedweekly averagereport only (mg/L)all year
Solids, total suspendedmonthly averagereport only (kg/d)all year
Solids, total suspendedmonthly averagereport only (kg/d)all year
Solids, total suspendedweekly averagereport only (kg/d)all year
Solids, total suspendedweekly averagereport only (kg/d)all year
Nitrogen, organic 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≤ 7.7 mg/LNov
Nitrogen, ammonia total [as N]monthly average≤ 7.7 mg/LNov
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.7 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 11.1 mg/LMay
Nitrogen, ammonia total [as N]monthly average≤ 11.1 mg/LMay
Nitrogen, ammonia total [as N]monthly average≤ 14.6 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 14.6 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 11.6 mg/LNov
Nitrogen, ammonia total [as N]weekly average≤ 11.6 mg/LNov
Nitrogen, ammonia total [as N]weekly average≤ 2.6 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 2.6 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 16.7 mg/LMay
Nitrogen, ammonia total [as N]weekly average≤ 16.7 mg/LMay
Nitrogen, ammonia total [as N]weekly average≤ 21.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 21.9 mg/LJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 819 kg/dNov
Nitrogen, ammonia total [as N]monthly average≤ 819 kg/dNov
Nitrogen, ammonia total [as N]monthly average≤ 182 kg/dJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 182 kg/dJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1183 kg/dMay
Nitrogen, ammonia total [as N]monthly average≤ 1183 kg/dMay
Nitrogen, ammonia total [as N]monthly average≤ 1547 kg/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1547 kg/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1024 kg/dNov
Nitrogen, ammonia total [as N]weekly average≤ 1024 kg/dNov
Nitrogen, ammonia total [as N]weekly average≤ 227 kg/dJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 227 kg/dJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 1478 kg/dMay
Nitrogen, ammonia total [as N]weekly average≤ 1478 kg/dMay
Nitrogen, ammonia total [as N]weekly average≤ 1933 kg/dJan, Feb, Mar, Apr, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1933 kg/dJan, Feb, Mar, Apr, Dec
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year
Nitrite + Nitrate 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
Phosphorus, total [as P]monthly averagereport only (mg/L)all year
Phosphate, ortho [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≤ 28 MGDall year
Flow, in conduit or thru treatment plantmonthly average≤ 28 MGDall year
Flow, in conduit or thru treatment plantweekly average≤ 35 MGDall year
Flow, in conduit or thru treatment plantweekly average≤ 35 MGDall year
Chlorine, total residualdaily maximum≤ .14 mg/Lall year
Chlorine, total residualdaily maximum≤ .14 mg/Lall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalmonthly geometric mean≤ 200 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
Coliform, fecal generalweekly geometric mean≤ 400 #/100mLall year
Solids, sludge, total, dry weightmonthly totalreport only (dry ton)all year
Solids, sludge, total, dry weightmonthly totalreport only (dry ton)all year
BOD, 5-day, percent removalminimum≥ 85 %all year
BOD, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaminimumreport only (%)all year
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaminimumreport only (%)all year
Noel Statre 7Day Chronic Pimephalesminimumreport only (%)all year
Noel Statre 7Day Chronic Pimephalesminimumreport only (%)all year

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/GA0024546 · MCP: https://passage-data.com/mcp