Portsmouth Lawson Run WWTP
Portsmouth, OH · Scioto County · Publicly Owned Treatment Works
- Average flow
- 3.25 MGD
- Design flow
- 6.5 MGD
- NPDES permit
- OH0027197
- Effective
- Permit expires
- December 2030
- Population served
- 19,370
- CWNS 2022
Portsmouth Lawson Run WWTP is a publicly owned wastewater treatment works in Portsmouth, Scioto County, Ohio treating an average of 3.25 million gallons per day against a permitted design capacity of 6.5 MGD, serving about 19,370 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit OH0027197 (effective), which expires in December 2030, with 1 recorded violation 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
- 1
- Effluent violations
- 1
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Portsmouth Lawson Run WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Portsmouth Lawson Run WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Ohio
West Portsmouth · 4 mi away
0.21 MGD
West Portsmouth · 5 mi away
0.02 MGD
Portsmouth · 5 mi away
0.22 MGD
Wheelersburg · 6 mi away
0.84 MGD
Lucasville · 9 mi away
0.55 MGD
Wheelersburg · 10 mi away
0.02 MGD
Portsmouth · 10 mi away
0.01 MGD
Portsmouth · 12 mi away
0.004 MGD
Portsmouth Lawson Run 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 28, 2025.