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Olivia city of

Sewage treatment plant, Olivia, Minnesota. NPDES permit MN0020907, in force until Oct 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 D022 form A1 monthly (33 values), outfall D022 form A2 monthly (2 values), outfall S023 form A1 monthly (11 values)
Renewal application due
May 4, 2027 · 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 (51)

ParameterStatisticLimitMonthsOutfall
Specific conductancemonthly maximumreport only (umho/cm)all yearD022
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD022
pHmonthly minimum≥ 6 SUall yearD022
pHmonthly maximum≤ 9 SUall yearD022
Bicarbonate ion- [as HCO3]monthly maximumreport only (mg/L)all yearD022
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD022
Solids, total suspendedmonthly maximumreport only (mg/L)JulD022
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD022
Solids, total suspendedmonthly average≤ 111.1 kg/dall yearD022
Solids, total suspendedmaximum weekly average≤ 166.7 kg/dall yearD022
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD022
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Mar, SepD022
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD022
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD022
Phosphorus, total [as P]monthly averagereport only (mg/L)Jun–SepD022
Phosphorus, total [as P]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD022
Phosphorus, total [as P]monthly average≤ 4.9 kg/dJun–SepD022
Phosphorus, total [as P]monthly averagereport only (kg/d)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD022
Phosphorus, total [as P]annual total≤ 1354 kg/yrall yearD022
Calcium, total [as Ca]monthly maximumreport only (mg/L)all yearD022
Magnesium, total [as Mg]monthly maximumreport only (mg/L)all yearD022
Sodium, total [as Na]monthly maximumreport only (mg/L)all yearD022
Potassium, total [as K]monthly maximumreport only (mg/L)all yearD022
Chloride [as Cl]monthly maximumreport only (mg/L)all yearD022
Sulfate, total [as SO4]monthly maximumreport only (mg/L)all yearD022
Hardness, Ca Mg Calculated [mg/L as CaCO3]monthly maximumreport only (mg/L)all yearD022
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLMay–OctD022
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD022
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD022
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD022
Chlorine, total residualdaily maximum≤ .038 mg/LMay–OctD022
Solids, total dissolvedmonthly averagereport only (mg/L)all yearD022
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)JulD022
Mercury, total [as Hg]monthly maximumreport only (ng/L)JulD022
BOD, carbonaceous [5 day, 20 C]monthly average≤ 15 mg/Lall yearD022
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 25 mg/Lall yearD022
BOD, carbonaceous [5 day, 20 C]monthly average≤ 55.6 kg/dall yearD022
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 83.4 kg/dall yearD022
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD022
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD022
Precipitation, total defined period/inmonthly totalreport only (in)all yearS023
pHmonthly minimumreport only (SU)all yearS023
pHmonthly maximumreport only (SU)all yearS023
Solids, total suspendedmonthly averagereport only (mg/L)all yearS023
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS023
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS023
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS023
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS023
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS023
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS023
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS023

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0020907 · MCP: https://passage-data.com/mcp