Waltham WWTP
31730 580th Ave, Waltham, MN 55982 · Mower County · Publicly Owned Treatment Works
- Average flow
- —
- Design flow
- 0.03 MGD
- NPDES permit
- MNG585380
- Effective
- Permit expires
- November 2028
- Population served
- —
- CWNS 2022
Waltham WWTP is a publicly owned wastewater treatment works in Waltham, Mower County, Minnesota. It discharges under NPDES permit MNG585380 (effective), which expires in November 2028, with 9 recorded violations in the last three years.
Treatment technology
One treatment structure or unit process identified at Waltham WWTP.
Available with a free Klarifi account
See the full treatment train at Waltham WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 9
- Effluent violations
- 9
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Waltham WWTP.
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Nearby wastewater treatment plants in Minnesota
Brownsdale · 4 mi away
—
Sargeant Township · 4 mi away
—
Lansing · 7 mi away
—
Blooming Prairie · 9 mi away
0.15 MGD
Dexter · 10 mi away
—
Elkton · 14 mi away
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Oakland · 14 mi away
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Dodge Center · 15 mi away
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Waltham 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 · Oxidation ditch · Anaerobic digester · all terms