Richwood WWTP
302 South Franklin Street, Richwood, OH 43344 · Union County · Publicly Owned Treatment Works
- Average flow
- 0.28 MGD
- Design flow
- 0.38 MGD
- NPDES permit
- OH0027260
- Effective
- Permit expires
- July 2030
- Population served
- 2,323
- CWNS 2022
Richwood WWTP is a publicly owned wastewater treatment works in Richwood, Union County, Ohio treating an average of 0.28 million gallons per day against a permitted design capacity of 0.38 MGD, serving about 2,323 residents. It discharges under NPDES permit OH0027260 (effective), which expires in July 2030, with 53 recorded violations in the last three years.
Treatment technology
Treatment structures and unit processes at Richwood WWTP.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 53
- 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 Richwood WWTP.
No verified contacts on file yet
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Nearby wastewater treatment plants in Ohio
Richwood · 2 mi away
0.00084 MGD
Prospect · 6 mi away
0.1 MGD
Marysville · 9 mi away
0.01 MGD
Marion · 10 mi away
0.02 MGD
Marion · 11 mi away
0.03 MGD
New Bloomington · 11 mi away
0.03 MGD
Ostrander · 12 mi away
0.06 MGD
Larue · 12 mi away
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Richwood 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 October 26, 2026; facility record last updated November 29, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · FOG · Equalization tank · all terms