Waltham WWTP
Waltham, MN · 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. Treatment on site includes uncovered lagoons. It discharges under NPDES permit MNG585380 (effective), which expires in November 2028, with 11 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
Unlock
Unlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 11
- Effluent violations
- 8
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.
No verified contacts on file yet
Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.
Nearby wastewater treatment plants in Minnesota
Brownsdale · 4 mi away
—
Sargeant Township · 4 mi away
—
Lansing · 7 mi away
—
Blooming Prairie · 9 mi away
0.19 MGD
Dexter · 10 mi away
—
Elkton · 14 mi away
—
Oakland · 14 mi away
—
Dodge Center · 15 mi away
—
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 September 11, 2026; facility record last updated November 6, 2025.