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Rockdale County Department of Water Resources

Sewage treatment plant, major discharger, Conyers, Georgia. NPDES permit GA0050258, in force until Apr 30, 2031. Last 12 months: no values over a limit, 44 required values missing, 2 of 17 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 15 days after each period: outfall 001 form B1 monthly (44 values), outfall 002 form B2 monthly (1 value)
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 (53)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]minimum≥ 6 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 8 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 12 mg/LMay–Oct001
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/LJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly average≤ 200 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cmonthly average≤ 250 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cweekly average≤ 250 lb/dMay–Oct001
BOD, 5-day, 20 deg. Cweekly average≤ 313 lb/dJan, Feb, Mar, Apr, Nov, Dec001
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cweekly averagereport only (mg/L)all year001
BOD, 5-day, 20 deg. Cmonthly averagereport only (lb/d)all year001
BOD, 5-day, 20 deg. Cweekly averagereport only (lb/d)all year001
pHminimum≥ 6 SUall year001
pHmaximum≤ 8.5 SUall year001
Solids, total suspendedmonthly average≤ 8.7 mg/Lall year001
Solids, total suspendedweekly average≤ 13.1 mg/Lall year001
Solids, total suspendedmonthly average≤ 218 lb/dall year001
Solids, total suspendedweekly average≤ 272 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, ammonia total [as N]monthly average≤ 1 mg/LMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 1.5 mg/LMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 2.3 mg/LJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]monthly average≤ 25 lb/dMay–Oct001
Nitrogen, ammonia total [as N]monthly average≤ 37.5 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, ammonia total [as N]weekly average≤ 31.3 lb/dMay–Oct001
Nitrogen, ammonia total [as N]weekly average≤ 46.9 lb/dJan, Feb, Mar, Apr, Nov, Dec001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]monthly average≤ .14 mg/Lall year001
Phosphorus, total [as P]weekly average≤ .21 mg/Lall year001
Phosphorus, total [as P]monthly average≤ 3.5 lb/dall year001
Phosphorus, total [as P]weekly average≤ 4.4 lb/dall year001
Zinc, total recoverablemonthly averagereport only (ug/L)all year001
Copper, total recoverablemonthly averagereport only (ug/L)all year001
Phosphate, ortho [as P]monthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantmonthly average≤ 3 MGDall year001
Flow, in conduit or thru treatment plantweekly average≤ 3.75 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, 5-day, percent removalminimum≥ 85 %all year001
Solids, suspended percent removalminimum≥ 85 %all year001
NOEC Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimumreport only (%)all year001
NOEC Lethal Static Renewal 7 Day Chronic Pimephales promelasminimumreport only (%)all year001
NOEC Sub-Lethal Static Renewal 7 Day Chronic Ceriodaphnia dubiaminimumreport only (%)all year001
NOEC Sub-Lethal Static Renewal 7 Day Chronic Pimephales promelasminimumreport only (%)all year001
Hardness, total [as CaCO3]monthly minimumreport only (mg/L)all year002

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/GA0050258 · MCP: https://passage-data.com/mcp