Decatur WWTP
Decatur, IN · Adams County · Publicly Owned Treatment Works
- Average flow
- 1.17 MGD
- Design flow
- 3.25 MGD
- NPDES permit
- IN0039314
- Effective
- Permit expires
- August 2030
- Population served
- 11,474
- CWNS 2022
Decatur WWTP is a publicly owned wastewater treatment works in Decatur, Adams County, Indiana treating an average of 1.17 million gallons per day against a permitted design capacity of 3.25 MGD, serving about 11,474 residents. Treatment on site includes clarifiers, biogas silos. It discharges under NPDES permit IN0039314 (effective), which expires in August 2030, with 5 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
- 5
- Effluent violations
- 5
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
6 verified contacts for Decatur WWTP, with validated emails and direct phone numbers.
Unlock 6 verified contacts (3 more than shown)
Names, validated emails and direct phone numbers for decision-makers at Decatur WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Indiana
Monroeville · 9 mi away
0.001 MGD
Berne · 12 mi away
0.48 MGD
Ossian · 13 mi away
0.51 MGD
Bluffton · 14 mi away
1.14 MGD
Uniondale · 16 mi away
0.0093 MGD
Fort Wayne · 18 mi away
29.9 MGD
Woodburn · 20 mi away
0.18 MGD
Markle · 22 mi away
0.09 MGD
Decatur 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.