Delphi WWTP
2251 N Sr 25, Delphi, IN 46923 · Carroll County · Publicly Owned Treatment Works
- Average flow
- 0.94 MGD
- Design flow
- 1.5 MGD
- NPDES permit
- IN0021377
- Effective
- Permit expires
- September 2031
- Population served
- 2,961
- CWNS 2022
Delphi WWTP is a publicly owned wastewater treatment works in Delphi, Carroll County, Indiana treating an average of 0.94 million gallons per day against a permitted design capacity of 1.5 MGD, serving about 2,961 residents. It discharges under NPDES permit IN0021377 (effective), which expires in September 2031, with 46 recorded violations in the last three years.
Treatment technology
2 treatment structures and unit processes identified at Delphi WWTP.
Available with a free Klarifi account
See the full treatment train at Delphi WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 46
- Effluent violations
- 37
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
2 verified contacts for Delphi WWTP, with validated emails and direct phone numbers.
Unlock 2 verified contacts
Names, validated emails and direct phone numbers for decision-makers at Delphi WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Indiana
Camden · 7 mi away
0.07 MGD
Rockfield · 8 mi away
0.0068 MGD
Flora · 9 mi away
0.31 MGD
West Lafayette · 9 mi away
—
Monticello · 9 mi away
0.06 MGD
Brookston · 10 mi away
0.29 MGD
Battle Ground · 10 mi away
0.22 MGD
Chalmers · 11 mi away
0.07 MGD
Delphi 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 May 18, 2025.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Ozonation · Activated sludge · all terms