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Missouri-American Water Company

Civic And Social Associations, Eureka, Missouri. NPDES permit MO0122751, in force until Apr 30, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form M monthly (12 values)
Renewal application due
Nov 2, 2027 · 180 days before expiry; your permit may set another date
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 (16)

ParameterStatisticLimitMonths
BOD, 5-day, 20 deg. Cweekly average≤ 45 mg/Lall year
BOD, 5-day, 20 deg. Cmonthly average≤ 30 mg/Lall year
pHminimum≥ 6.5 SUall year
pHmaximum≤ 9 SUall year
Solids, total suspendedweekly average≤ 45 mg/Lall year
Solids, total suspendedmonthly average≤ 30 mg/Lall year
Nitrogen, ammonia total [as N]daily maximum≤ 111.3 mg/LFeb
Nitrogen, ammonia total [as N]daily maximum≤ 133.4 mg/LJan, Oct, Nov, Dec
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)Mar–Sep
Nitrogen, ammonia total [as N]monthly average≤ 111.3 mg/LFeb
Nitrogen, ammonia total [as N]monthly average≤ 133.4 mg/LJan, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar–Sep
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year
E. colidaily maximum≤ 630 #/100mLApr–Oct
E. coli30-day geometric mean≤ 126 #/100mLApr–Oct

How strict are these limits?

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

Same industry: the 212 Membership Organizations 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/MO0122751 · MCP: https://passage-data.com/mcp