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Confluence Rivers Utility Operating

Private Households, Maryville, Missouri. NPDES permit MO0127981, in force until Mar 31, 2028. Last 12 months: over a limit 8 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: form Q quarterly
Renewal application due
Oct 3, 2027 · 180 days before expiry; your permit may set another date
Last report on file
June 2026
Oct 2024 – Sep 2025
5 values over a limit, 0 required values missing, 1 of 4 reports late

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

Period endingParameterReportedLimitOver by
December 2025E. coli, 30-day geometric mean317≤ 206 #/100mL54%
December 2025Nitrogen, ammonia total [as N], monthly average4≤ 2.4 mg/L67%
March 2026Nitrogen, ammonia total [as N], monthly average2.9≤ 2.4 mg/L21%
March 2026pH, minimum6.3≥ 6.5 SU—
June 2026E. coli, 30-day geometric mean2359≤ 206 #/100mL1045%
June 2026E. coli, daily maximum2359≤ 1030 #/100mL129%
June 2026Nitrogen, ammonia total [as N], daily maximum41.5≤ 8.4 mg/L394%
June 2026Nitrogen, ammonia total [as N], monthly average41.5≤ 1.4 mg/L2864%

Limits in force (18)

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≤ 8.4 mg/LJan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]daily maximum≤ 6.9 mg/LJul–Sep
Nitrogen, ammonia total [as N]daily maximum≤ 8.4 mg/LApr–Jun
Nitrogen, ammonia total [as N]monthly average≤ 2.4 mg/LJan, Feb, Mar, Oct, Nov, Dec
Nitrogen, ammonia total [as N]monthly average≤ .9 mg/LJul–Sep
Nitrogen, ammonia total [as N]monthly average≤ 1.4 mg/LApr–Jun
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≤ 18 ug/LApr–Dec
Chlorine, total residualmonthly average≤ 9 ug/LApr–Dec
E. colidaily maximum≤ 1030 #/100mLApr–Dec
E. coli30-day geometric mean≤ 206 #/100mLApr–Dec

How strict are these limits?

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

Same industry: the 22 Private Households 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/MO0127981 · MCP: https://passage-data.com/mcp