Washington WWTP
Washington, IN · Daviess County · Publicly Owned Treatment Works
- Average flow
- 2.46 MGD
- Design flow
- 4.2 MGD
- NPDES permit
- IN0025658
- Effective
- Permit expires
- June 2028
- Population served
- 16,233
- CWNS 2022
Washington WWTP is a publicly owned wastewater treatment works in Washington, Daviess County, Indiana treating an average of 2.46 million gallons per day against a permitted design capacity of 4.2 MGD, serving about 16,233 residents. Treatment on site includes clarifiers, aerated lagoons, uncovered lagoons, carrousels / oxidation ditches. It discharges under NPDES permit IN0025658 (effective), which expires in June 2028, with 132 recorded violations in the last three years.
Treatment technology
Treatment structures identified at this facility. Exact unit counts are available in Klarifi.
Clarifiers
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Aerated lagoons
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Uncovered lagoons
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Carrousels / oxidation ditches
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Compliance snapshot (last 3 years)
- Total violations
- 132
- Effluent violations
- 124
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
Key contacts
1 verified contact for Washington WWTP, with validated emails and direct phone numbers.
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Names, validated emails and direct phone numbers for decision-makers at Washington WWTP, plus the full compliance history and discharge data.
Nearby wastewater treatment plants in Indiana
Monroe City · 9 mi away
0.03 MGD
Montgomery · 9 mi away
0.16 MGD
Bicknell · 10 mi away
0.67 MGD
Edwardsport · 10 mi away
0.007 MGD
Plainville · 12 mi away
0.01 MGD
Petersburg · 12 mi away
0.28 MGD
Otwell · 15 mi away
0.02 MGD
Freelandville · 15 mi away
0.02 MGD
Washington 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 May 18, 2025.