What is the address of Knightstown WWTP?

The address on the plant’s EPA facility record is 4177 W 1200 N, Knightstown, IN 46148, in Henry County. Its coordinates are 39.7864, -85.5259. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Knightstown WWTP treat?

Knightstown WWTP treats an average of 0.48 MGD and is permitted for a design flow of 0.8 MGD.

What treatment technology does Knightstown WWTP use?

Klarifi has identified one treatment structure or unit process at the Knightstown facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Knightstown WWTP?

The facility discharges under NPDES permit IN0040177, currently effective, expiring June 2028.

Is Knightstown WWTP in compliance?

Discharge monitoring reports show 22 violations at Knightstown WWTP in the last three years, 5 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Knightstown WWTP and how do I contact them?

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

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Knightstown WWTP

4177 W 1200 N, Knightstown, IN 46148 · Henry County · Publicly Owned Treatment Works

Average flow: 0.48 MGD

Design flow: 0.8 MGD

NPDES permit: IN0040177; Effective

Permit expires: June 2028

Population served: 2,140; CWNS 2022

Knightstown WWTP is a publicly owned wastewater treatment works in Knightstown, Henry County, Indiana treating an average of 0.48 million gallons per day against a permitted design capacity of 0.8 MGD, serving about 2,140 residents. It discharges under NPDES permit IN0040177 (effective), which expires in June 2028, with 22 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Knightstown WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 22

Effluent violations: 5

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

Key contacts

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

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

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Nearby wastewater treatment plants in Indiana

Carthage WWTP

Carthage · 5 mi away

0.11 MGD

Kennard WWTP

Kennard · 8 mi away

0.05 MGD

Shirley WWTP

Shirley · 8 mi away

0.2 MGD

New Castle WWTP

New Castle · 11 mi away

4.53 MGD

Greenfield Wastewater Treatment Plant Improvements

Greenfield · 13 mi away

3.43 MGD

Morristown WWTP

Morristown · 13 mi away

0.44 MGD

Rushville WWTP

Rushville · 13 mi away

1.76 MGD

Western Rush Co Rwsd WWTP

Homer · 14 mi away

0.07 MGD

Knightstown 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 November 27, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Centrate · Ozonation · all terms

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