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Chesterfield County

Water Supply, Midlothian, Virginia. NPDES permit VA0006254, in force until Jul 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 10 days after each period: form M1 monthly (11 values), form A1 yearly, form Q1 quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 13 reports late

Limits in force (24)

ParameterStatisticLimitMonths
pHminimum≥ 6 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Solids, total suspendeddaily maximum≤ 60 mg/Lall year
Nitrogen, total [as N]annual averagereport only (mg/L)all year
Nitrogen, total [as N]annual maximumreport only (mg/L)all year
Nitrogen, ammonia total [as N]annual averagereport only (mg/L)all year
Nitrogen, ammonia total [as N]annual maximumreport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]annual averagereport only (mg/L)all year
Nitrogen, Kjeldahl, total [as N]annual maximumreport only (mg/L)all year
Nitrite + Nitrate total [as N]annual averagereport only (mg/L)all year
Nitrite + Nitrate total [as N]annual maximumreport only (mg/L)all year
Phosphorus, total [as P]daily maximumreport only (lb/mo)all year
Carbon, dissolved organic [as C]averagereport only (mg/L)all year
Carbon, dissolved organic [as C]maximumreport only (mg/L)all year
Hardness, total [as CaCO3]averagereport only (mg/L)all year
Hardness, total [as CaCO3]maximumreport only (mg/L)all year
Aluminum, total recoverableaveragereport only (mg/L)all year
Aluminum, total recoverablemaximumreport only (mg/L)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Chlorine, total residualmonthly average≤ 16 ug/Lall year
Chlorine, total residualdaily maximum≤ 16 ug/Lall year
Phosphorus, Total As Pdaily maximum≤ 9.6 lb/yrall year

How strict are these limits?

Cited limits by parameter: Virginia's rules and the federal ones.

Same industry: the 24 Water Supply permits in Virginia.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/VA0006254 · MCP: https://passage-data.com/mcp