Hardin Pws
Hardin, MO · Ray County · Publicly Owned Treatment Works
- Average flow
- 0.03 MGD
- Design flow
- —
- NPDES permit
- MO0046655
- Administratively continued
- Permit expires
- December 2023
- Population served
- 655
- CWNS 2022
Hardin Pws is a publicly owned wastewater treatment plant in Hardin, Ray County, Missouri treating an average of 0.03 million gallons per day, serving about 655 residents. Treatment on site includes uncovered lagoons, lagoon, anaerobic. It discharges under NPDES permit MO0046655 (administratively continued), which expires in December 2023, with 41 recorded violations in the last three years. Planned upgrades on record: disinfection, uv.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Uncovered lagoons
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Lagoon, Anaerobic
unit processDisinfection, UV
planned upgradeUnlock exact unit counts →
Compliance snapshot (last 3 years)
- Total violations
- 41
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
Decision-makers at Hardin Pws.
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Richmond · 8 mi away
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Higginsville · 12 mi away
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Higginsville · 15 mi away
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Mayview · 15 mi away
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Corder · 15 mi away
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Orrick · 17 mi away
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Waverly · 17 mi away
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Hardin Pws: 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 March 15, 2025.