Washington WWTP
413 Clark Road, Washington, IN 47501 · Daviess County · Publicly Owned Treatment Works
- Average flow
- 3.2 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 3.2 million gallons per day against a permitted design capacity of 4.2 MGD, serving about 16,233 residents. It discharges under NPDES permit IN0025658 (effective), which expires in June 2028, with 130 recorded violations in the last three years. EPA has recorded 1 formal enforcement action naming the plant, the latest in March 2023.
Treatment technology
2 treatment structures and unit processes identified at Washington WWTP.
Available with a free Klarifi account
See the full treatment train at Washington WWTP: structures, unit processes and planned upgrades, with exact unit counts.
Compliance snapshot (last 3 years)
- Total violations
- 130
- Effluent violations
- 124
Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.
EPA enforcement history
Federal civil enforcement cases, compliance inspections and informal actions recorded for Washington WWTP in EPA's ICIS system.
- Formal actions
- 1
- 1 since FY2020
- Compliance actions
- $3.1M
- required by EPA orders
- EPA inspections
- 0
- none on record
Latest case · Mar 2023
Washington AOC
Administrative order · CWA, NPDES Permit Violations · Final Order Issued · Compliance actions $3.1M
EPA's description of the case:
“AOC sets out measures to correct the alleged violations and bring the facility into compliance with the CWA and the facilitys NPDES permit.”
Source: EPA ECHO, civil enforcement case 05-2023-0315.
Full case history with a free Klarifi account
Every action against Washington WWTP with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.
Key contacts
1 verified contact for Washington WWTP, with validated emails and direct phone numbers.
Unlock 1 verified contact
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
0.05 MGD
Montgomery · 9 mi away
0.13 MGD
Bicknell · 10 mi away
0.6 MGD
Edwardsport · 10 mi away
0.02 MGD
Plainville · 12 mi away
0.01 MGD
Petersburg · 12 mi away
0.46 MGD
Otwell · 15 mi away
0.11 MGD
Freelandville · 15 mi away
0.03 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 October 26, 2026; facility record last updated September 14, 2026.
Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms