Passage Data · Check a report · Use it from your AI

Carlos city of

Sewage treatment plant, Carlos, Minnesota. NPDES permit MN0023019, in force until Jan 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 D001 form A1 monthly (20 values), outfall D001 form A2 monthly (1 value), outfall S003 form A1 monthly (11 values)
Renewal application due
Aug 4, 2027 · 180 days before expiry; your permit may set another date
Last report on file
September 2026
Oct 2024 – Sep 2025
3 values over a limit, 0 required values missing, 0 of 40 reports late

Limits in force (36)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD001
pHmonthly minimum≥ 6 SUall yearD001
pHmonthly maximum≤ 9 SUall yearD001
Solids, total suspendedmonthly average≤ 45 mg/Lall yearD001
Solids, total suspendedmaximum weekly average≤ 65 mg/Lall yearD001
Solids, total suspendedmonthly average≤ 133 kg/dall yearD001
Solids, total suspendedmaximum weekly average≤ 192.1 kg/dall yearD001
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearD001
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD001
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD001
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD001
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD001
Phosphorus, total [as P]year-to-date total≤ 177 kg/yrall yearD001
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Mar, Apr, May, Jun, Sep, Oct, Nov, DecD001
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)Jan, Feb, Jul, AugD001
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)Mar, Apr, May, Jun, Sep, Oct, Nov, DecD001
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)Jan, Feb, Jul, AugD001
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)Mar, Apr, May, Jun, Sep, Oct, Nov, DecD001
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)Jan, Feb, Jul, AugD001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD001
BOD, carbonaceous [5 day, 20 C]monthly average≤ 73.9 kg/dall yearD001
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 118.2 kg/dall yearD001
Precipitation, total defined period/inmonthly totalreport only (in)all yearS003
pHquarterly maximumreport only (SU)Mar, Jun, Sep, DecS003
Solids, total suspendedquarterly averagereport only (mg/L)Mar, Jun, Sep, DecS003
Nitrogen, total [as N]monthly averagereport only (mg/L)Mar, SepS003
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, SepS003
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, SepS003
Phosphorus, total [as P]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS003
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS003
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS003
BOD, carbonaceous [5 day, 20 C]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS003
Stream flow, instantaneousmonthly minimumreport only (cfs)Mar–JunW004

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

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

· Save this facility as a site · Superfund sites nearby · Your permits on one board

On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0023019 · MCP: https://passage-data.com/mcp