City Of Harlowton WWTF
Harlowton, MT · Wheatland County · Publicly Owned Treatment Works
- Average flow
- 0.07 MGD
- Design flow
- —
- NPDES permit
- MTG071376
- Terminated
- Permit expires
- April 2030
- Population served
- 1,115
- CWNS 2022
City Of Harlowton WWTF is a publicly owned wastewater treatment works in Harlowton, Wheatland County, Montana treating an average of 0.07 million gallons per day, serving about 1,115 residents. Treatment on site includes aerated lagoons. It discharges under NPDES permit MTG071376 (terminated), which expires in April 2030, with 76 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Aerated lagoons
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Compliance snapshot (last 3 years)
- Total violations
- 76
- Effluent violations
- 20
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for City Of Harlowton WWTF, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at City Of Harlowton WWTF, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Montana
Hobson · 40 mi away
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Big Timber · 41 mi away
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Lavina · 43 mi away
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Lewistown · 48 mi away
2.38 MGD
White Sulphur Springs · 54 mi away
0.05 MGD
Columbus · 62 mi away
0.14 MGD
Denton · 62 mi away
—
Livingston · 63 mi away
0.69 MGD
City Of Harlowton WWTF: 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.