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Missouri-American Water Company

Private Households, Foristell, Missouri. NPDES permit MO0132373, in force until May 31, 2029. Last 12 months: over a limit 4 times (last June 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 28 days after each period: outfall 001 form M monthly (2 values), outfall 001 form Q quarterly (20 values), outfall INF form IQ quarterly (8 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 15 reports late

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

Period endingParameterReportedLimitOver by
March 2026Nitrogen, ammonia total [as N], daily maximum7.55≤ 5 mg/L51%
March 2026Nitrogen, ammonia total [as N], monthly average5.6≤ 2.5 mg/L124%
June 2026Nitrogen, ammonia total [as N], daily maximum14.5≤ 3 mg/L383%
June 2026Nitrogen, ammonia total [as N], monthly average4.9≤ 1.5 mg/L227%

Limits in force (36)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]daily minimum≥ 4 mg/Lall year001
Oxygen, dissolved [DO]monthly average minimum≥ 4 mg/Lall year001
BOD, 5-day, 20 deg. Cweekly average≤ 15 mg/Lall year001
BOD, 5-day, 20 deg. Cmonthly average≤ 10 mg/Lall year001
pHminimum≥ 6.5 SUall year001
pHmaximum≤ 9 SUall year001
Solids, total suspendedweekly average≤ 20 mg/Lall year001
Solids, total suspendedmonthly average≤ 15 mg/Lall year001
Nitrogen, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, total [as N]monthly averagereport only (mg/L)all year001
Nitrogen, ammonia total [as N]daily maximum≤ 5 mg/LJan–Mar001
Nitrogen, ammonia total [as N]daily maximum≤ 5 mg/LOct–Dec001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LJul–Sep001
Nitrogen, ammonia total [as N]daily maximum≤ 3 mg/LApr–Jun001
Nitrogen, ammonia total [as N]monthly average≤ 2.5 mg/LJan–Mar001
Nitrogen, ammonia total [as N]monthly average≤ 2.2 mg/LOct–Dec001
Nitrogen, ammonia total [as N]monthly average≤ 1 mg/LJul–Sep001
Nitrogen, ammonia total [as N]monthly average≤ 1.5 mg/LApr–Jun001
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all year001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all year001
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all year001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all year001
Phosphorus, total [as P]daily maximumreport only (mg/L)all year001
Phosphorus, total [as P]monthly averagereport only (mg/L)all year001
Flow, in conduit or thru treatment plantdaily maximumreport only (MGD)all year001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all year001
E. colidaily maximum≤ 630 #/100mLApr–Oct001
E. coli30-day geometric mean≤ 126 #/100mLApr–Oct001
Nitrogen, ammonia total [as N]daily maximumreport only (mg/L)all yearINF
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all yearINF
Nitrogen, Kjeldahl, total [as N]daily maximumreport only (mg/L)all yearINF
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearINF
Nitrite + Nitrate total [as N]daily maximumreport only (mg/L)all yearINF
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearINF
Phosphorus, total [as P]daily maximumreport only (mg/L)all yearINF
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearINF

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/MO0132373 · MCP: https://passage-data.com/mcp