Shafer WWTP
Shafer, MN · Chisago County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.11 MGD
- NPDES permit
- MNG585047
- Effective
- Permit expires
- November 2028
- Population served
- —
- CWNS 2022
Shafer WWTP is a publicly owned wastewater treatment works in Shafer, Chisago County, Minnesota. Treatment on site includes uncovered lagoons. It discharges under NPDES permit MNG585047 (effective), which expires in November 2028, with 3 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 3
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Shafer WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Shafer WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Minnesota
Chisago City · 6 mi away
1.03 MGD
North Branch · 13 mi away
0.37 MGD
Harris · 17 mi away
0.02 MGD
Oak Park Heights · 24 mi away
2.54 MGD
Cambridge · 26 mi away
0.65 MGD
Saint Francis · 30 mi away
0.39 MGD
Braham · 31 mi away
0.16 MGD
Saint Paul · 35 mi away
180 MGD
Shafer WWTP: frequently asked questions
Sources and methodology
Flow, permit and violation figures come from the EPA's ICIS-NPDES discharge monitoring records. Population served comes from the Clean Watersheds Needs Survey 2022. Treatment structures are identified by Klarifi's review of aerial imagery, and capital improvement projects are extracted from published municipal budget documents. Violations are counted over the last three years of monitoring reports.
Data refreshed September 11, 2026; facility record last updated November 8, 2025.