Maryville WWTP
Maryville, MO · Nodaway County · Publicly Owned Treatment Works
- Average flow
- 0.92 MGD
- Design flow
- 2 MGD
- NPDES permit
- MO0033286
- Effective
- Permit expires
- September 2022
- Population served
- 11,641
- CWNS 2022
Maryville WWTP is a publicly owned wastewater treatment works in Maryville, Nodaway County, Missouri treating an average of 0.92 million gallons per day against a permitted design capacity of 2 MGD, serving about 11,641 residents. Treatment on site includes clarifiers, uncovered lagoons, biological treatment, other, disinfection, uv, flow equalization and other unit processes. It discharges under NPDES permit MO0033286 (effective), which expires in September 2022, with 16 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Uncovered lagoons
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Biological Treatment, Other
unit processDisinfection, UV
unit processFlow Equalization
unit processScreening
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Compliance snapshot (last 3 years)
- Total violations
- 16
- Effluent violations
- 13
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
3 verified contacts for Maryville WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Maryville WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Missouri
Pickering · 8 mi away
0.0031 MGD
Barnard · 11 mi away
0.02 MGD
Skidmore · 14 mi away
0.02 MGD
Hopkins · 15 mi away
0.09 MGD
Maitland · 16 mi away
0.06 MGD
Clearmont · 16 mi away
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Stanberry · 18 mi away
0.14 MGD
Fillmore · 23 mi away
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Maryville 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 February 16, 2025.