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Royston, City of

Sewage treatment plant, Royston, Georgia. NPDES permit GA0021491 expired Sep 30, 2022; its limits still apply. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 46 days after each period: form B1 monthly (3 values), form B2 monthly (38 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 24 reports late

Limits in force (67)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 20 mg/Lall year
BOD, 5-day, 20 deg. Cweekly average≤ 30 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 38 kg/dall year
BOD, 5-day, 20 deg. Cweekly average≤ 47 kg/dall 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. Cmonthly averagereport only (kg/d)all year
BOD, 5-day, 20 deg. Cweekly averagereport only (kg/d)all year
pHminimum≥ 6 SUall year
pHmaximum≤ 8.5 SUall year
Solids, total suspendedmonthly average≤ 20 mg/Lall year
Solids, total suspendedweekly average≤ 30 mg/Lall year
Solids, total suspendedmonthly average≤ 38 kg/dall year
Solids, total suspendedweekly average≤ 47 kg/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 (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, ammonia total [as N]monthly average≤ 1.4 mg/LNov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .7 mg/LMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LJan–Apr
Nitrogen, ammonia total [as N]weekly average≤ 2.1 mg/LNov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1.1 mg/LMay–Oct
Nitrogen, ammonia total [as N]weekly average≤ 2.1 mg/LJan–Apr
Nitrogen, ammonia total [as N]monthly average≤ 2.7 kg/dNov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 1.3 kg/dMay–Oct
Nitrogen, ammonia total [as N]monthly average≤ 2.7 kg/dJan–Apr
Nitrogen, ammonia total [as N]weekly average≤ 3.3 kg/dNov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 1.7 kg/dMay–Oct
Nitrogen, ammonia total [as N]weekly average≤ 3.3 kg/dJan–Apr
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
Copper, total recoverablemonthly average≤ 7.9 ug/LMar–Oct
Copper, total recoverablemonthly average≤ 8.3 ug/LJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverablemonthly averagereport only (ug/L)all year
Copper, total recoverablemonthly average≤ 8.3 ug/LJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverablemonthly average≤ 7.9 ug/LMay–Oct
Copper, total recoverableweekly average≤ 10.3 ug/LMar–Oct
Copper, total recoverableweekly average≤ 10.8 ug/LJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverableweekly average≤ 10.8 ug/LJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverableweekly average≤ 10.3 ug/LMay–Oct
Copper, total recoverablemonthly average≤ .015 kg/dMar–Oct
Copper, total recoverablemonthly average≤ .016 kg/dJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverablemonthly average≤ .016 kg/dJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverablemonthly average≤ .015 kg/dMay–Oct
Copper, total recoverableweekly average≤ .019 kg/dMar–Oct
Copper, total recoverableweekly average≤ .021 kg/dJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverableweekly average≤ .021 kg/dJan, Feb, Mar, Apr, Nov, Dec
Copper, total recoverableweekly average≤ .019 kg/dMay–Oct
Phosphate, ortho [as P]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ .5 MGDall year
Flow, in conduit or thru treatment plantweekly average≤ .625 MGDall year
Chlorine, total residualmonthly average≤ .01 mg/Lall year
Chlorine, total residualweekly average≤ .01 mg/Lall year
Chlorine, total residualmaximum≤ .01 mg/Lall 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, 5-day, percent removalminimum≥ 85 %all year
Solids, suspended percent removalminimum≥ 85 %all year
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaminimum≥ 96 %May–Oct
NOEL Static Renewal 7Day Chronic Ceriodaphnia dubiaminimum≥ 92 %Jan, Feb, Mar, Apr, Nov, Dec
Noel Statre 7Day Chronic Pimephalesminimum≥ 96 %May–Oct
Noel Statre 7Day Chronic Pimephalesminimum≥ 92 %Jan, Feb, Mar, Apr, Nov, Dec

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/GA0021491 · MCP: https://passage-data.com/mcp