Darbydale WWTP
Columbus, OH · Franklin County · Publicly Owned Treatment Works
- Average flow
- 0.12 MGD
- Design flow
- 0.45 MGD
- NPDES permit
- OH0130923
- Effective
- Permit expires
- August 2030
- Population served
- 3,801
- CWNS 2022
Darbydale WWTP is a publicly owned wastewater treatment works in Columbus, Franklin County, Ohio treating an average of 0.12 million gallons per day against a permitted design capacity of 0.45 MGD, serving about 3,801 residents. Treatment on site includes clarifiers, uncovered lagoons. It discharges under NPDES permit OH0130923 (effective), which expires in August 2030, with 15 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Compliance snapshot (last 3 years)
- Total violations
- 15
- Effluent violations
- 15
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Capital improvement projects in Columbus
Columbus's capital improvement plan lists 297 water, sewer and wastewater line items worth $4.2B starting 2025–2029. The largest budgeted items are shown here.
All water and sewer capital projects in Columbus →
| Project | Budget | Years |
|---|---|---|
| Fourth Water Plant | $548,000,000 | 2025–2028 |
| Williams and Castle Interceptor | $361,500,000 | 2025–2029 |
| Three Creeks Relief Tunnel | $249,500,000 | 2025–2028 |
| SWWTP Effluent Pump Station Expansion | $228,400,000 | 2027–2029 |
| Fourth Water Plant Transmission Main | $217,500,000 | 2025–2029 |
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 Darbydale WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Ohio
Grove City · 4 mi away
0.00079 MGD
Orient · 4 mi away
0.56 MGD
West Jefferson · 7 mi away
0.89 MGD
West Jefferson · 9 mi away
0.0021 MGD
Columbus · 9 mi away
—
Columbus · 9 mi away
0.08 MGD
Lockbourne · 9 mi away
82.1 MGD
Columbus · 9 mi away
0.0016 MGD
Darbydale 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 29, 2025.