What is the address of Corydon WWTP?

The address on the plant’s EPA facility record is 340 W. Poplar Avenue, Corydon, IN 47112, in Harrison County. Its coordinates are 38.2092, -86.1302. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Corydon WWTP treat?

Corydon WWTP treats an average of 0.53 MGD and is permitted for a design flow of 1.46 MGD.

What treatment technology does Corydon WWTP use?

Klarifi has identified 3 treatment structures and unit processes at the Corydon facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Corydon WWTP?

The facility discharges under NPDES permit IN0020893, currently effective, expiring June 2028.

Is Corydon WWTP in compliance?

Discharge monitoring reports show 21 violations at Corydon WWTP in the last three years, 7 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Corydon WWTP and how do I contact them?

Corydon WWTP is a publicly owned treatment works in Corydon, Indiana. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Corydon WWTP

340 W. Poplar Avenue, Corydon, IN 47112 · Harrison County · Publicly Owned Treatment Works

Average flow: 0.53 MGD

Design flow: 1.46 MGD

NPDES permit: IN0020893; Effective

Permit expires: June 2028

Population served: 3,162; CWNS 2022

Corydon WWTP is a publicly owned wastewater treatment works in Corydon, Harrison County, Indiana treating an average of 0.53 million gallons per day against a permitted design capacity of 1.46 MGD, serving about 3,162 residents. It discharges under NPDES permit IN0020893 (effective), which expires in June 2028, with 21 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Corydon WWTP.

Available with a free Klarifi account

See the full treatment train at Corydon WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 21

Effluent violations: 7

Based on NPDES Discharge Monitoring Reports. Full violation history, parameters and discharge data available in the Klarifi platform.

Key contacts

2 verified contacts for Corydon WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Corydon WWTP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Indiana

Lanesville WWTP

Lanesville · 7 mi away

0.04 MGD

Georgetown Water Reclamation Facility

Georgetown · 10 mi away

0.33 MGD

Milltown WWTP

Depauw · 11 mi away

0.03 MGD

Leavenworth WWTP

Leavenworth · 12 mi away

0.09 MGD

Laconia Municipal WWTP

Laconia · 13 mi away

0.0015 MGD

Palmyra WWTP

Palmyra · 14 mi away

0.1 MGD

Galena WWTP

Galena · 14 mi away

0.07 MGD

Marengo Municipal WWTP

Marengo · 16 mi away

0.28 MGD

Corydon 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 August 19, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms

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