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

Rochester city of

Sewage treatment plant, major discharger, Rochester, Minnesota. NPDES permit MN0024619, in force until Mar 31, 2027. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D366 form A1 monthly (44 values), outfall D366 form A2 monthly (2 values), outfall D366 form A3 monthly (1 value), outfall S370 form A1 monthly (15 values)
Renewal application due
Oct 2, 2026 · 180 days before expiry; your permit may set another date
Last report on file
August 2026
Oct 2024 – Sep 2025
1 value over a limit, 0 required values missing, 0 of 48 reports late

Limits in force (69)

ParameterStatisticLimitMonthsOutfall
Specific conductancemonthly maximumreport only (umho/cm)Mar, SepD366
Oxygen, dissolved [DO]monthly minimum≥ 5 mg/Lall yearD366
pHmonthly minimum≥ 6 SUall yearD366
pHmonthly maximum≤ 9 SUall yearD366
Bicarbonate ion- [as HCO3]monthly maximumreport only (mg/L)Mar, SepD366
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD366
Solids, total suspendedmonthly maximumreport only (mg/L)Jan, Mar, May, Jul, Sep, NovD366
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD366
Solids, total suspendedmonthly average≤ 2705 kg/dall yearD366
Solids, total suspendedmaximum weekly average≤ 4057 kg/dall yearD366
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearD366
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJun–SepD366
Nitrogen, ammonia total [as N]monthly average≤ 10 mg/LApr, MayD366
Nitrogen, ammonia total [as N]monthly average≤ 5 mg/LJan, Feb, Mar, DecD366
Nitrogen, ammonia total [as N]monthly average≤ 13 mg/LOct, NovD366
Nitrogen, ammonia total [as N]monthly average≤ 270 kg/dJun–SepD366
Nitrogen, ammonia total [as N]monthly average≤ 902 kg/dApr, MayD366
Nitrogen, ammonia total [as N]monthly average≤ 451 kg/dJan, Feb, Mar, DecD366
Nitrogen, ammonia total [as N]monthly average≤ 1172 kg/dOct, NovD366
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearD366
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearD366
Phosphorus, total [as P]monthly average≤ 1 mg/Lall yearD366
Phosphorus, total [as P]monthly average≤ 129 kg/dJun–SepD366
Phosphorus, total [as P]monthly averagereport only (kg/d)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD366
Phosphorus, total [as P]year-to-date total≤ 25206 kg/yrall yearD366
Calcium, total [as Ca]monthly maximumreport only (mg/L)Mar, SepD366
Magnesium, total [as Mg]monthly maximumreport only (mg/L)Mar, SepD366
Sodium, total [as Na]monthly maximumreport only (mg/L)Mar, SepD366
Potassium, total [as K]monthly maximumreport only (mg/L)Mar, SepD366
Chloride [as Cl]quarterly maximumreport only (mg/L)Mar, Jun, Sep, DecD366
Sulfate, total [as SO4]monthly maximumreport only (mg/L)Mar, SepD366
Cadmium, total [as Cd]quarterly maximumreport only (ug/L)Mar, Jun, Sep, DecD366
Chromium, total [as Cr]quarterly maximumreport only (ug/L)Mar, Jun, Sep, DecD366
Copper, total [as Cu]daily maximum≤ 46 ug/LMar, Jun, Sep, DecD366
Lead, total [as Pb]quarterly maximumreport only (ug/L)Mar, Jun, Sep, DecD366
Nickel, total [as Ni]quarterly maximumreport only (ug/L)Mar, Jun, Sep, DecD366
Zinc, total [as Zn]quarterly maximumreport only (ug/L)Mar, Jun, Sep, DecD366
Selenium, total [as Se]monthly maximumreport only (ug/L)Mar, SepD366
Tetrachloroethylenemonthly maximumreport only (ug/L)Mar, SepD366
Hardness, Ca Mg Calculated [mg/L as CaCO3]monthly maximumreport only (mg/L)Mar, SepD366
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD366
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD366
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD366
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD366
Chlorine, total residualdaily maximum≤ .038 mg/LApr–OctD366
Solids, total dissolvedmonthly maximumreport only (mg/L)Mar, SepD366
Mercury, total [as Hg]monthly average≤ 10 ng/LJan, Mar, May, Jul, Sep, NovD366
Mercury, total [as Hg]daily maximum≤ 17 ng/LJan, Mar, May, Jul, Sep, NovD366
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/Lall yearD366
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 25 mg/Lall yearD366
BOD, carbonaceous [5 day, 20 C]monthly average≤ 1352 kg/dall yearD366
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 2254 kg/dall yearD366
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD366
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD366
Precipitation, total defined period/inmonthly totalreport only (in)all yearS370
pHmonthly minimumreport only (SU)all yearS370
pHmonthly maximumreport only (SU)all yearS370
Solids, total suspendedmonthly averagereport only (mg/L)all yearS370
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS370
Nitrogen, total [as N]monthly averagereport only (mg/L)all yearS370
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)all yearS370
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)all yearS370
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS370
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS370
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS370
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS370
Mercury, total [as Hg]monthly averagereport only (ng/L)Jan, Mar, May, Jul, Sep, NovS370
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS370
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS370

How strict are these limits?

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/MN0024619 · MCP: https://passage-data.com/mcp