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Gonvick city of

Sewage treatment plant, Gonvick, Minnesota. NPDES permit MN0020541, in force until Jul 31, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D003 form A1 monthly (29 values), outfall S006 form A1 monthly (11 values)
Last report on file
September 2026

Limits in force (46)

ParameterStatisticLimitMonthsOutfall
Specific conductancequarterly maximumreport only (umho/cm)Mar, Jun, Sep, DecD003
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD003
pHmonthly minimum≥ 6 SUall yearD003
pHmonthly maximum≤ 9 SUall yearD003
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD003
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD003
Solids, total suspendedmonthly average≤ 10.2 kg/dall yearD003
Solids, total suspendedmaximum weekly average≤ 15.3 kg/dall yearD003
Nitrogen, total [as N]monthly averagereport only (mg/L)Mar, SepD003
Nitrogen, ammonia total [as N]monthly average≤ 6 mg/LJan, Feb, Mar, DecD003
Nitrogen, ammonia total [as N]monthly average≤ 14 mg/LOct, NovD003
Nitrogen, ammonia total [as N]monthly average≤ 3 mg/LJun–SepD003
Nitrogen, ammonia total [as N]monthly average≤ 28 mg/LApr, MayD003
Nitrogen, ammonia total [as N]monthly average≤ 2 kg/dJan, Feb, Mar, DecD003
Nitrogen, ammonia total [as N]monthly average≤ 4.8 kg/dOct, NovD003
Nitrogen, ammonia total [as N]monthly average≤ 1 kg/dJun–SepD003
Nitrogen, ammonia total [as N]monthly average≤ 9.5 kg/dApr, MayD003
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, SepD003
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, SepD003
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD003
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD003
Chloride [as Cl]monthly average≤ 403 mg/LJan, Mar, May, Jul, Sep, NovD003
Sulfate, total [as SO4]quarterly maximumreport only (mg/L)Mar, Jun, Sep, DecD003
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD003
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD003
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD003
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD003
Chlorine, total residualdaily maximum≤ .038 mg/LApr–OctD003
Solids, total dissolvedquarterly maximumreport only (mg/L)Mar, Jun, Sep, DecD003
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD003
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD003
BOD, carbonaceous [5 day, 20 C]monthly average≤ 8.5 kg/dall yearD003
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 13.6 kg/dall yearD003
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD003
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD003
Precipitation, total defined period/inmonthly totalreport only (in)all yearS006
pHmonthly minimumreport only (SU)all yearS006
pHmonthly maximumreport only (SU)all yearS006
Solids, total suspendedmonthly averagereport only (mg/L)all yearS006
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS006
Nitrogen, total [as N]monthly averagereport only (mg/L)Mar, SepS006
Nitrogen, Kjeldahl, total [as N]monthly averagereport only (mg/L)Mar, SepS006
Nitrite + Nitrate total [as N]monthly averagereport only (mg/L)Mar, SepS006
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS006
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS006
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS006

New limits from Jul 1, 2031

ParameterNew limitNew or tighterMedian, last 12 months× new limit
Chloride [as Cl], monthly average230 mg/L (Jan, Mar, May, Jul, Sep, Nov)tighter——

How strict are these limits?

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

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On EPA ECHO: Facility report · DMR history

Your permit document is the final word. As JSON: /api/v1/permits/MN0020541 · MCP: https://passage-data.com/mcp