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Northern States Power a MN Corp dba Xcel

Electric Services, major discharger, Saint Paul, Minnesota. NPDES permit MN0000884, in force until Nov 30, 2030. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D002 form A1 monthly (11 values), outfall W006 form A1 monthly (1 value), outfall W007 form A1 monthly (2 values)
Last report on file
August 2026
Oct 2024 – Sep 2025
0 values over a limit, 0 required values missing, 0 of 36 reports late

Limits in force (14)

ParameterStatisticLimitMonthsOutfall
Temperature, water deg. fahrenheitmonthly averagereport only (deg F)all yearD002
Temperature, water deg. fahrenheitdaily maximumreport only (deg F)all yearD002
Plant capacity fact. percent of capacitymonthly averagereport only (%)all yearD002
Oxidants, total residualdaily average≤ .016 mg/Lall yearD002
Oxidants, total residualdaily maximum≤ .05 mg/Lall yearD002
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD002
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD002
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD002
Chlorine, total residualdaily average≤ .038 mg/Lall yearD002
Chlorine, total residualdaily maximum≤ .2 mg/Lall yearD002
Chlorinationdaily maximum≤ 2 hr/dall yearD002
Temperature, water deg. fahrenheitdaily averagereport only (deg F)all yearW006
Temperature, water deg. fahrenheitdaily averagereport only (deg F)all yearW007
Temp. diff. between samp. & upstrm deg. Fdaily average≤ 5 deg Fall yearW007

How strict are these limits?

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

Same industry: the 12 Electric Services permits in Minnesota.

Check this month's numbers Email me before each report is due

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0000884 · MCP: https://passage-data.com/mcp