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Chesterfield County

Sewage treatment plant, major discharger, Chester, Virginia. NPDES permit VA0060194, in force until Jan 31, 2031. Last 12 months: over a limit once (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (21 values), form A1 yearly, form Q1 quarterly, form S1 twice a year
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 15 reports late

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

Period endingParameterReportedLimitOver by
August 2026Solids, total suspended, weekly average1214≤ 1090 kg/d11%

Limits in force (42)

ParameterStatisticLimitMonths
Oxygen, dissolved [DO]minimum≥ 5.9 mg/Lall year
pHdaily minimum≥ 6 SUall year
pHdaily maximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 7.1 mg/LJun–Oct
Solids, total suspendedmonthly average≤ 11 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Solids, total suspendedweekly average≤ 11 mg/LJun–Oct
Solids, total suspendedweekly average≤ 16 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Solids, total suspendedmonthly average≤ 726 kg/dJun–Oct
Solids, total suspendedmonthly average≤ 1090 kg/dJan, Feb, Mar, Apr, May, Nov, Dec
Solids, total suspendedweekly average≤ 1090 kg/dJun–Oct
Solids, total suspendedweekly average≤ 1635 kg/dJan, Feb, Mar, Apr, May, Nov, Dec
Solids, total suspendedmonthly averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]monthly average≤ 6.2 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 3.6 mg/LJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 8 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 4.5 mg/LJun–Oct
Nitrogen, ammonia total [as N]monthly average≤ 635 kg/dJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ 435 kg/dJun–Oct
Nitrogen, ammonia total [as N]weekly average≤ 869 kg/dJan, Feb, Mar, Apr, May, Nov, Dec
Nitrogen, ammonia total [as N]weekly average≤ 583 kg/dJun–Oct
Phosphorus, total [as P]monthly average≤ 2 mg/Lall year
Cyanide, free [amenable to chlorination]monthly averagereport only (ug/L)all year
Cyanide, free [amenable to chlorination]weekly averagereport only (ug/L)all year
Hardness, total [as CaCO3]monthly averagereport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly average≤ 27 MGD (alert, not enforceable)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD) (alert, not enforceable)all year
Chlorine, total residualmonthly average≤ 10 ug/Lall year
Chlorine, total residualweekly average≤ 13 ug/Lall year
Chlorine, total residualminimum≥ .6 mg/Lall year
E. coligeometric mean≤ 126 #/100mLall year
Nitrogen, Total As Nmonthly average≤ 5.8 mg/Lall year
BOD, carbonaceous [5 day, 20 C]monthly average≤ 11 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 7 mg/LJun–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 16 mg/LJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 11 mg/LJun–Oct
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1090 kg/dJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]monthly average≤ 726 kg/dJun–Oct
BOD, carbonaceous [5 day, 20 C]weekly average≤ 1635 kg/dJan, Feb, Mar, Apr, May, Nov, Dec
BOD, carbonaceous [5 day, 20 C]weekly average≤ 1090 kg/dJun–Oct
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all year
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all year
Solids, suspended percent removalmonthly average minimum≥ 85 %all year

How strict are these limits?

Cited limits by parameter: Virginia'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/VA0060194 · MCP: https://passage-data.com/mcp