Little Walnut Sycamore WRF
Canal Winchester, OH · Fairfield County · Publicly Owned Treatment Works
- Average flow
- 0.16 MGD
- Design flow
- 0.75 MGD
- NPDES permit
- OH0121088
- Effective
- Permit expires
- December 2028
- Population served
- 4,080
- CWNS 2022
Little Walnut Sycamore WRF is a publicly owned wastewater treatment works in Canal Winchester, Fairfield County, Ohio treating an average of 0.16 million gallons per day against a permitted design capacity of 0.75 MGD, serving about 4,080 residents. Treatment on site includes clarifiers. It discharges under NPDES permit OH0121088 (effective), which expires in December 2028, with 7 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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Compliance snapshot (last 3 years)
- Total violations
- 7
- Effluent violations
- 7
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Canal Winchester
Canal Winchester's capital improvement plan lists 11 water, sewer and wastewater line items worth $30M starting 2023–2028. The largest budgeted items are shown here.
All water and sewer capital projects in Canal Winchester →
| Project | Budget | Years |
|---|---|---|
| WRF Headworks Replacement & Storage Building | $22,000,000 | 2023–2026 |
| WRF Upgrades for PO4 Removal | $2,500,000 | 2028–2029 |
| Winchester Blvd. West Sanitary Extension | $1,500,000 | 2026–2027 |
| Ashbrook/Westchester Waterline Loop | $1,000,000 | 2028–2029 |
| WTP Admin Building | $1,000,000 | 2026–2027 |
Full project details — scope, funding source, engineering consultant and the decision-makers behind each project — are available in Klarifi, along with similar wastewater capital projects in other cities.
Key contacts
Decision-makers at Little Walnut Sycamore WRF.
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Nearby wastewater treatment plants in Ohio
Pickerington · 3 mi away
2.54 MGD
Canal Winchester · 3 mi away
1.39 MGD
Pickerington · 5 mi away
0.13 MGD
Lancaster · 7 mi away
1.81 MGD
Baltimore · 7 mi away
0.33 MGD
Columbus · 7 mi away
0.72 MGD
Lancaster · 8 mi away
0.0067 MGD
Baltimore · 11 mi away
0.12 MGD
Little Walnut Sycamore WRF: 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 29, 2025.