Rio Grande WWTP
Rio Grande, OH · Gallia County · Publicly Owned Treatment Works
- Average flow
- 0.15 MGD
- Design flow
- 0.16 MGD
- NPDES permit
- OH0027278
- Administratively continued
- Permit expires
- August 2026
- Population served
- 812
- CWNS 2022
Rio Grande WWTP is a publicly owned wastewater treatment works in Rio Grande, Gallia County, Ohio treating an average of 0.15 million gallons per day against a permitted design capacity of 0.16 MGD, serving about 812 residents. It discharges under NPDES permit OH0027278 (administratively continued), which expires in August 2026, with 2 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Treatment structure data not yet analyzed for this facility.
Compliance snapshot (last 3 years)
- Total violations
- 2
- Effluent violations
- 2
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Rio Grande WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Rio Grande WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
Bidwell · 5 mi away
—
Vinton · 6 mi away
0.01 MGD
Oak Hill · 11 mi away
0.2 MGD
Gallipolis · 12 mi away
1.11 MGD
Rutland · 17 mi away
0.03 MGD
Middleport · 17 mi away
0.18 MGD
Wellston · 17 mi away
1.03 MGD
Jackson · 19 mi away
1.2 MGD
Rio Grande 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 August 3, 2026.