Hardwick WWTP
County Road 7 & County Road 19, Hardwick, MN 56134 · Rock County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.04 MGD
- NPDES permit
- MNG585194
- Effective
- Permit expires
- November 2028
- Population served
- 255
- CWNS 2022
Hardwick WWTP is a publicly owned wastewater treatment works in Hardwick, Rock County, Minnesota, serving about 255 residents. It discharges under NPDES permit MNG585194 (effective), which expires in November 2028, with 26 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Hardwick WWTP.
Available with a free Klarifi account
See the full treatment train at Hardwick WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 26
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Hardwick WWTP.
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Nearby wastewater treatment plants in Minnesota
Luverne · 8 mi away
0.83 MGD
Leota · 9 mi away
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Magnolia · 11 mi away
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Lismore Township · 12 mi away
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Jasper · 13 mi away
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Beaver Creek Township · 14 mi away
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Adrian · 15 mi away
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Chandler · 16 mi away
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Hardwick 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 October 26, 2026; facility record last updated November 6, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biosolids · Filter press · all terms