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Kasson city of

Sewage treatment plant, major discharger, Kasson, Minnesota. NPDES permit MN0050725, in force until Dec 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Last report on file
September 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 37 reports late

Limits in force (67)

ParameterStatisticLimitMonthsOutfall
Specific conductancemonthly maximumreport only (umho/cm)Mar, SepD016
Oxygen, dissolved [DO]monthly minimum≥ 6 mg/LJan, Feb, Mar, Jun, Jul, Aug, Sep, Oct, Nov, DecD016
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)Apr, MayD016
pHmonthly minimum≥ 6 SUall yearD016
pHmonthly maximum≤ 9 SUall yearD016
Bicarbonate ion- [as HCO3]monthly maximumreport only (mg/L)Mar, SepD016
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD016
Solids, total suspendedmonthly maximumreport only (mg/L)Jan, Mar, May, Jul, Sep, NovD016
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD016
Solids, total suspendedmonthly average≤ 234.7 kg/dall yearD016
Solids, total suspendedmaximum weekly average≤ 352.1 kg/dall yearD016
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearD016
Nitrogen, ammonia total [as N]monthly average≤ 2.3 mg/LJun–SepD016
Nitrogen, ammonia total [as N]monthly average≤ 13.1 mg/LOct, NovD016
Nitrogen, ammonia total [as N]monthly average≤ 17.2 mg/LApr, MayD016
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LJan, Feb, Mar, DecD016
Nitrogen, ammonia total [as N]monthly maximum≤ 18 mg/LJun–SepD016
Nitrogen, ammonia total [as N]monthly maximum≤ 102.6 mg/LOct, NovD016
Nitrogen, ammonia total [as N]monthly maximum≤ 134.8 mg/LApr, MayD016
Nitrogen, ammonia total [as N]monthly maximum≤ 39.2 mg/LJan, Feb, Mar, DecD016
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD016
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD016
Phosphorus, total [as P]monthly averagereport only (mg/L)Jun–SepD016
Phosphorus, total [as P]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD016
Phosphorus, total [as P]12-month average≤ 1 mg/Lall yearD016
Phosphorus, total [as P]monthly average≤ 4.4 kg/dJun–SepD016
Phosphorus, total [as P]monthly averagereport only (kg/d)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD016
Phosphorus, total [as P]annual total≤ 1658 kg/yrall yearD016
Calcium, total [as Ca]monthly maximumreport only (mg/L)Mar, SepD016
Magnesium, total [as Mg]monthly maximumreport only (mg/L)Mar, SepD016
Sodium, total [as Na]monthly maximumreport only (mg/L)Mar, SepD016
Potassium, total [as K]monthly maximumreport only (mg/L)Mar, SepD016
Chloride [as Cl]monthly maximumreport only (mg/L)Mar, SepD016
Sulfate, total [as SO4]monthly maximumreport only (mg/L)Mar, SepD016
Hardness, Ca Mg Calculated [mg/L as CaCO3]monthly maximumreport only (mg/L)Mar, SepD016
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD016
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD016
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD016
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD016
Solids, total dissolvedmonthly maximumreport only (mg/L)Mar, SepD016
Mercury, dissolved [as Hg]monthly averagereport only (ng/L)Jan, Mar, May, Jul, Sep, NovD016
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)Jan, Mar, May, Jul, Sep, NovD016
Mercury, total [as Hg]monthly average≤ 9.7 ng/LJan, Mar, May, Jul, Sep, NovD016
Mercury, total [as Hg]monthly maximum≤ 16.8 ng/LJan, Mar, May, Jul, Sep, NovD016
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/Lall yearD016
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 25 mg/Lall yearD016
BOD, carbonaceous [5 day, 20 C]monthly average≤ 117.4 kg/dall yearD016
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 195.6 kg/dall yearD016
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD016
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD016
Solids, total suspendedannual averagereport only (mg/L)all yearD022
BOD, carbonaceous [5 day, 20 C]annual averagereport only (mg/L)all yearD022
Precipitation, total defined period/inmonthly totalreport only (in)all yearS021
pHmonthly minimumreport only (SU)all yearS021
pHmonthly maximumreport only (SU)all yearS021
Solids, total suspendedmonthly averagereport only (mg/L)all yearS021
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS021
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearS021
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearS021
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearS021
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS021
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS021
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS021
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS021
Mercury, total [as Hg]monthly averagereport only (ng/L)Jan, Mar, May, Jul, Sep, NovS021
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS021
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS021

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/MN0050725 · MCP: https://passage-data.com/mcp