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Public Water Supply District No. 2

Water Supply, Eureka, Missouri. NPDES permit MO0099635, in force until Jan 31, 2031. Last 12 months: over a limit once (last February 2026), 12 required values missing, 2 of 15 reports late. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (12 values), form A yearly, form Q quarterly
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 1 of 17 reports late

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

Period endingParameterReportedLimit
February 2026pH, maximum10.25≤ 9 SU

Limits in force (16)

ParameterStatisticLimitMonths
Oxygen demand, chem. [high level] [COD]daily maximumreport only (mg/L)all year
Oxygen demand, chem. [high level] [COD]monthly averagereport only (mg/L)all year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 10.5 SUall year
Solids, total suspendeddaily maximumreport only (mg/L)all year
Solids, total suspendedmonthly average≤ 95 mg/Lall year
Solids, settleabledaily maximum≤ 1 mL/Lall year
Solids, settleablemonthly average≤ 1 mL/Lall year
Iron, total recoverabledaily maximumreport only (ug/L)all year
Iron, total recoverablemonthly averagereport only (ug/L)all year
Lead, total recoverabledaily maximum≤ 30 ug/Lall year
Lead, total recoverablemonthly average≤ 15 ug/Lall year
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
Chlorine, total residualdaily maximum≤ 131 ug/Lall year
Chlorine, total residualmonthly average≤ 57.1 ug/Lall year

How strict are these limits?

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

Same industry: the 18 Water Supply permits in Missouri.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MO0099635 · MCP: https://passage-data.com/mcp