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Saint Clair city of

Sewage treatment plant, Saint Clair, Minnesota. NPDES permit MN0024716, in force until Jul 31, 2028. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D008 form A1 monthly (24 values), outfall D008 form A2 monthly (2 values), outfall S010 form A1 monthly (11 values)
Renewal application due
Feb 2, 2028 · 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 36 reports late

Limits in force (43)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD008
pHmonthly minimum≥ 6 SUall yearD008
pHmonthly maximum≤ 9 SUall yearD008
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD008
Solids, total suspendedmonthly maximumreport only (mg/L)JulD008
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD008
Solids, total suspendedmonthly average≤ 24 kg/dall yearD008
Solids, total suspendedmaximum weekly average≤ 36.1 kg/dall yearD008
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD008
Nitrogen, ammonia total [as N]monthly average≤ 15 mg/LJun–SepD008
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)MarD008
Nitrogen, ammonia total [as N]monthly average≤ 12 kg/dJun–SepD008
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD008
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD008
Phosphorus, total [as P]monthly averagereport only (mg/L)Jun–SepD008
Phosphorus, total [as P]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD008
Phosphorus, total [as P]monthly average≤ 1.1 kg/dJun–SepD008
Phosphorus, total [as P]monthly averagereport only (kg/d)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD008
Phosphorus, total [as P]annual total≤ 293 kg/yrall yearD008
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD008
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD008
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD008
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD008
Solids, total dissolvedmonthly averagereport only (mg/L)Mar, SepD008
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)JulD008
Mercury, total [as Hg]monthly maximumreport only (ng/L)JulD008
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD008
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD008
BOD, carbonaceous [5 day, 20 C]monthly average≤ 20 kg/dall yearD008
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 32.1 kg/dall yearD008
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD008
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD008
Precipitation, total defined period/inmonthly totalreport only (in)all yearS010
pHmonthly minimumreport only (SU)all yearS010
pHmonthly maximumreport only (SU)all yearS010
Solids, total suspendedmonthly averagereport only (mg/L)all yearS010
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS010
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS010
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS010
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS010
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS010
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS010
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS010

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/MN0024716 · MCP: https://passage-data.com/mcp