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American Crystal Sugar Company

Beet Sugar, major discharger, Crookston, Minnesota. NPDES permit MN0001929, in force until Jul 31, 2029. Last 12 months: over a limit 5 times (last August 2026). Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D043 form A1 monthly (29 values), outfall D043 form A2 monthly (2 values), outfall S049 form A1 monthly (9 values), outfall S049 form A2 monthly (1 value), outfall W044 form A1 monthly (1 value), outfall W045 form A1 monthly (4 values)
Last report on file
September 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 64 reports late

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

Period endingParameterReportedLimitOver by
August 2026Solids, total suspended, daily maximum2276≤ 1134 kg/d101%
August 2026Solids, total suspended, daily maximum97≤ 60 mg/L62%
August 2026Solids, total suspended, monthly average1450≤ 567 kg/d156%
August 2026Solids, total suspended, monthly average67≤ 30 mg/L123%
August 2026pH, monthly maximum9.1≤ 9 SU—

Limits in force (46)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. centigrademonthly maximum≤ 32 deg Call yearD043
Specific conductancemonthly averagereport only (umho/cm)all yearD043
BOD, 5-day, 20 deg. Cmonthly average≤ 25 mg/Lall yearD043
BOD, 5-day, 20 deg. Cmonthly maximum≤ 50 mg/Lall yearD043
BOD, 5-day, 20 deg. Cmonthly average≤ 472 kg/dall yearD043
BOD, 5-day, 20 deg. Cmonthly maximum≤ 945 kg/dall yearD043
pHmonthly minimum≥ 6 SUall yearD043
pHmonthly maximum≤ 9 SUall yearD043
Solids, total suspendedmonthly averagereport only (mg/L)Mar, Jun, Sep, DecD043
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD043
Solids, total suspendeddaily maximumreport only (mg/L)Mar, Jun, Sep, DecD043
Solids, total suspendeddaily maximum≤ 60 mg/Lall yearD043
Solids, total suspendedmonthly average≤ 567 kg/dall yearD043
Solids, total suspendeddaily maximum≤ 1134 kg/dall yearD043
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearD043
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all yearD043
Nitrogen, ammonia, tot unionized [as N]monthly averagereport only (mg/L)all yearD043
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD043
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD043
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD043
Chloride [as Cl]monthly averagereport only (mg/L)all yearD043
Sulfate, total [as SO4]monthly averagereport only (mg/L)all yearD043
Coliform, fecal MPN + membrane ftl 44.5 Cinstantaneous maximum≤ 400 #/100mLall yearD043
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD043
Flow, in conduit or thru treatment plantdaily maximum≤ 10 MGDall yearD043
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD043
Solids, total dissolvedmonthly averagereport only (mg/L)all yearD043
Mercury, dissolved [as Hg]monthly averagereport only (ng/L)Mar, Jun, Sep, DecD043
Mercury, dissolved [as Hg]daily maximumreport only (ng/L)Mar, Jun, Sep, DecD043
Mercury, total [as Hg]monthly average≤ 9.8 ng/Lall yearD043
Mercury, total [as Hg]daily maximum≤ 17.2 ng/Lall yearD043
BOD, 5-day, 20 deg. Cmonthly averagereport only (mg/L)all yearS049
pHinstantaneous minimumreport only (SU)all yearS049
pHinstantaneous maximumreport only (SU)all yearS049
Solids, total suspendedmonthly averagereport only (mg/L)all yearS049
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)all yearS049
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearS049
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearS049
Chloride [as Cl]monthly averagereport only (mg/L)all yearS049
Flow, in conduit or thru treatment plantyear-to-date totalreport only (Mgal/mo)all yearS049
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS049
Oxygen, dissolved [DO]instantaneous minimum≥ 5 mg/Lall yearW044
Oxygen, dissolved [DO]instantaneous minimumreport only (mg/L)all yearW045
Flow, in conduit or thru treatment plantmonthly minimumreport only (cfs)all yearW045
Flow, in conduit or thru treatment plantmonthly averagereport only (cfs)all yearW045
Flow, in conduit or thru treatment plantmonthly maximumreport only (cfs)all yearW045

How strict are these limits?

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

Same industry: the 28 Food and Kindred Products permits in Minnesota.

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0001929 · MCP: https://passage-data.com/mcp