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Industrial or other facility, Waterville, Minnesota. NPDES permit MN0063967, in force until Apr 30, 2031. Last 12 months: no values over a limit. Source: EPA ECHO, Oct 22, 2026.
| Parameter | Statistic | Limit | Months |
|---|---|---|---|
| pH | instantaneous minimum | ≥ 6 SU | Mar, Jun, Sep, Dec |
| pH | instantaneous maximum | ≤ 9 SU | Mar, Jun, Sep, Dec |
| Solids, total suspended | quarterly average | report only (mg/L) | Mar, Jun, Sep, Dec |
| Nitrogen, total [as N] | annual average | report only (mg/L) | all year |
| Nitrogen, Kjeldahl, total [as N] | annual average | report only (mg/L) | all year |
| Nitrite + Nitrate total [as N] | annual average | report only (mg/L) | all year |
| Phosphorus, total [as P] | quarterly average | report only (mg/L) | Mar, Jun, Sep, Dec |
| Sulfate, total [as SO4] | quarterly maximum | report only (mg/L) | Mar, Jun, Sep, Dec |
| Iron, total [as Fe] | quarterly maximum | report only (ug/L) | Mar, Jun, Sep, Dec |
| Benzene, ethylbenzene, toluene, xylene combination | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec |
| Toluene | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec |
| Benzene | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec |
| Ethylbenzene | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec |
| Flow, in conduit or thru treatment plant | quarterly average | report only (MGD) | Mar, Jun, Sep, Dec |
| Flow, in conduit or thru treatment plant | quarterly maximum | report only (MGD) | Mar, Jun, Sep, Dec |
| Flow, in conduit or thru treatment plant | quarterly total | report only (Mgal/mo) | Mar, Jun, Sep, Dec |
| Xylenes [total], dry weight | daily maximum | report only (ug/L) | Mar, Jun, Sep, Dec |
| BOD, carbonaceous [5 day, 20 C] | quarterly average | report only (mg/L) | Mar, Jun, Sep, Dec |
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/MN0063967 · MCP: https://passage-data.com/mcp