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

Rockford city of

Sewage treatment plant, Rockford, Minnesota. NPDES permit MN0024627, in force until Nov 30, 2030. Last 12 months: over a limit 2 times (last May 2026), 2 required values missing. Source: EPA ECHO, Oct 22, 2026.

Reports due
About 47 days after each period: outfall D027 form A1 monthly (25 values), outfall D027 form A3 monthly (2 values), outfall S028 form A1 monthly (14 values)
Last report on file
August 2026

Last 12 months (Oct 1, 2025 – Sep 30, 2026)

Period endingParameterReportedLimitOver by
May 2026Solids, total suspended, maximum weekly average141≤ 45 mg/L213%
May 2026Solids, total suspended, maximum weekly average155≤ 110.7 kg/d40%

Limits in force (46)

ParameterStatisticLimitMonthsOutfall
Oxygen, dissolved [DO]monthly minimumreport only (mg/L)all yearD027
pHmonthly minimum≥ 6 SUall yearD027
pHmonthly maximum≤ 9 SUall yearD027
Solids, total suspendedmonthly average≤ 30 mg/Lall yearD027
Solids, total suspendedmonthly maximumreport only (mg/L)JulD027
Solids, total suspendedmaximum weekly average≤ 45 mg/Lall yearD027
Solids, total suspendedmonthly average≤ 73.8 kg/dall yearD027
Solids, total suspendedmaximum weekly average≤ 110.7 kg/dall yearD027
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD027
Nitrogen, ammonia total [as N]monthly average≤ 20 mg/LJun–SepD027
Nitrogen, ammonia total [as N]monthly averagereport only (mg/L)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD027
Nitrogen, ammonia total [as N]monthly average≤ 49.2 kg/dJun–SepD027
Nitrogen, ammonia total [as N]monthly averagereport only (kg/d)Jan, Feb, Mar, Apr, May, Oct, Nov, DecD027
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD027
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecD027
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD027
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearD027
Phosphorus, total [as P]monthly averagereport only (kg/d)all yearD027
Phosphorus, total [as P]year-to-date total≤ 899 kg/yrall yearD027
Coliform, fecal MPN + membrane ftl 44.5 Cmonthly geometric mean≤ 200 #/100mLApr–OctD027
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearD027
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearD027
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearD027
Solids, total dissolvedmonthly averagereport only (mg/L)Mar, SepD027
Mercury, dissolved [as Hg]monthly maximumreport only (ng/L)JulD027
Mercury, total [as Hg]monthly maximumreport only (ng/L)JulD027
BOD, carbonaceous [5 day, 20 C]monthly average≤ 25 mg/Lall yearD027
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 40 mg/Lall yearD027
BOD, carbonaceous [5 day, 20 C]monthly average≤ 61.5 kg/dall yearD027
BOD, carbonaceous [5 day, 20 C]maximum weekly average≤ 98.4 kg/dall yearD027
BOD, carb-5 day, 20 deg C, percent removalmonthly average minimum≥ 85 %all yearD027
Solids, suspended percent removalmonthly average minimum≥ 85 %all yearD027
Precipitation, total defined period/inmonthly totalreport only (in)all yearS028
pHmonthly minimumreport only (SU)all yearS028
pHmonthly maximumreport only (SU)all yearS028
Solids, total suspendedmonthly averagereport only (mg/L)all yearS028
Solids, total suspendedmonthly maximumreport only (mg/L)all yearS028
Nitrogen, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS028
Nitrogen, Kjeldahl, total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS028
Nitrite + Nitrate total [as N]quarterly averagereport only (mg/L)Mar, Jun, Sep, DecS028
Phosphorus, total [as P]monthly averagereport only (mg/L)all yearS028
Flow, in conduit or thru treatment plantmonthly averagereport only (MGD)all yearS028
Flow, in conduit or thru treatment plantmonthly maximumreport only (MGD)all yearS028
Flow, in conduit or thru treatment plantmonthly totalreport only (Mgal/mo)all yearS028
BOD, carbonaceous [5 day, 20 C]monthly averagereport only (mg/L)all yearS028
BOD, carbonaceous [5 day, 20 C]monthly maximumreport only (mg/L)all yearS028

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/MN0024627 · MCP: https://passage-data.com/mcp