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Whitewater River WWTP

Sewage treatment plant, major discharger, Saint Charles, Minnesota. NPDES permit MN0046868, in force until Oct 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D021 form A1 monthly (31 values), outfall D021 form A2 monthly (1 value), outfall S022 form A1 monthly (14 values)
Renewal application due
May 4, 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 26 reports late

Limits in force (52)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD021
pHmonthly minimum≥ 6 SUall yearD021
pHmonthly maximum≤ 9 SUall yearD021
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD021
Solids, total suspendedmonthly maximumreport only (mg/L)May, SepD021
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD021
Solids, total suspendedmonthly average≤ 127.2 kg/dall yearD021
Solids, total suspendedmaximum weekly average≤ 190.8 kg/dall yearD021
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearD021
Nitrogen, total [as N]monthly averagereport only (kg/d)all yearD021
Nitrogen, ammonia total [as N]monthly average≤ 12.4 mg/LJan, Feb, Mar, DecD021
Nitrogen, ammonia total [as N]monthly average≤ 1.8 mg/LJun–SepD021
Nitrogen, ammonia total [as N]monthly average≤ 5.7 mg/LOct, NovD021
Nitrogen, ammonia total [as N]monthly average≤ 4.2 mg/LApr, MayD021
Nitrogen, ammonia total [as N]monthly average≤ 52.6 kg/dJan, Feb, Mar, DecD021
Nitrogen, ammonia total [as N]monthly average≤ 7.6 kg/dJun–SepD021
Nitrogen, ammonia total [as N]monthly average≤ 24.2 kg/dOct, NovD021
Nitrogen, ammonia total [as N]monthly average≤ 17.8 kg/dApr, MayD021
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD021
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (kg/d)all yearD021
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD021
Nitrite + Nitrate total [as N]monthly averagereport only (kg/d)all yearD021
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD021
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD021
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLall yearD021
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD021
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD021
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD021
Chlorine, total residualdaily maximum≤ .038 mg/Lall yearD021
Solids, total dissolvedmonthly averagereport only (mg/L)Apr, SepD021
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)May, SepD021
Mercury, total [as Hg]monthly maximumreport only (ng/L)May, SepD021
BOD, carbonaceous [5 day, 20 C]monthly average≤ 10 mg/Lall yearD021
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 15 mg/Lall yearD021
BOD, carbonaceous [5 day, 20 C]monthly average≤ 42.4 kg/dall yearD021
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 63.6 kg/dall yearD021
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD021
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD021
Precipitation, total defined period/inmonthly totalreport only (in)all yearS022
pHmonthly minimumreport only (SU)all yearS022
pHmonthly maximumreport only (SU)all yearS022
Solids, total suspendedmonthly averagereport only (mg/L)all yearS022
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS022
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearS022
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearS022
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearS022
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS022
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS022
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS022
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS022
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS022
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS022

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0046868 · MCP: https://passage-data.com/mcp