Hill City WWTP
125 Lake Ave, Hill City, MN 55748 · Aitkin County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.13 MGD
- NPDES permit
- MNG585182
- Effective
- Permit expires
- November 2028
- Population served
- 590
- CWNS 2022
Hill City WWTP is a publicly owned wastewater treatment works in Hill City, Aitkin County, Minnesota, serving about 590 residents. It discharges under NPDES permit MNG585182 (effective), which expires in November 2028, with 4 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Hill City WWTP.
Available with a free Klarifi account
See the full treatment train at Hill City WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 4
- 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 Hill City WWTP.
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Nearby wastewater treatment plants in Minnesota
Remer · 14 mi away
—
Grand Rapids · 17 mi away
5.92 MGD
Warba · 19 mi away
—
Palisade · 20 mi away
0.01 MGD
Coleraine · 23 mi away
0.27 MGD
Deer River · 27 mi away
—
Mcgregor · 30 mi away
—
Crosslake · 31 mi away
0.06 MGD
Hill City 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 · WWTP · Biosolids · all terms