Salem WWTP
Salem, IN · Washington County · Publicly Owned Treatment Works
- Average flow
- 0.69 MGD
- Design flow
- 1.6 MGD
- NPDES permit
- IN0021644
- Effective
- Permit expires
- July 2028
- Population served
- 6,371
- CWNS 2022
Salem WWTP is a publicly owned wastewater treatment works in Salem, Washington County, Indiana treating an average of 0.69 million gallons per day against a permitted design capacity of 1.6 MGD, serving about 6,371 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons. It discharges under NPDES permit IN0021644 (effective), which expires in July 2028, with 34 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
- 34
- Effluent violations
- 34
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Salem WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
Names, validated emails and direct phone numbers for decision-makers at Salem WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Indiana
Pekin · 8 mi away
0.1 MGD
Palmyra · 12 mi away
0.08 MGD
Borden · 13 mi away
0.21 MGD
Medora · 16 mi away
—
Austin · 18 mi away
0.47 MGD
Orleans · 19 mi away
0.12 MGD
Crothersville · 19 mi away
0.63 MGD
Scottsburg · 20 mi away
0.92 MGD
Salem 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 March 29, 2025.