What is the address of Salem WWTP?

The address on the plant’s EPA facility record is 209 W Joseph Ln, Salem, IN 47167, in Washington County. Its coordinates are 38.5962, -86.1070. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Salem WWTP treat?

Salem WWTP treats an average of 1.46 MGD and is permitted for a design flow of 1.6 MGD.

What treatment technology does Salem WWTP use?

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

What is the NPDES permit for Salem WWTP?

The facility discharges under NPDES permit IN0021644, currently effective, expiring July 2028.

Is Salem WWTP in compliance?

Discharge monitoring reports show 34 violations at Salem WWTP in the last three years, 34 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Salem WWTP and how do I contact them?

Salem WWTP is a publicly owned treatment works in Salem, Indiana. Klarifi lists 1 verified decision-maker contact for this facility, available with a free trial.

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Salem WWTP

209 W Joseph Ln, Salem, IN 47167 · Washington County · Publicly Owned Treatment Works

Average flow: 1.46 MGD

Design flow: 1.6 MGD

NPDES permit: IN0021644; Effective

Permit expires: July 2028

Population served: 6,371; CWNS 2022

Salem WWTP is a publicly owned wastewater treatment works in Salem, Washington County, Indiana treating an average of 1.46 million gallons per day against a permitted design capacity of 1.6 MGD, serving about 6,371 residents. It discharges under NPDES permit IN0021644 (effective), which expires in July 2028, with 34 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Salem WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 34

Effluent violations: 34

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

Key contacts

1 verified contact for Salem WWTP, with validated emails and direct phone numbers.

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

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New Pekin Wastewater Treatment Plant

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Palmyra WWTP

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Borden Wwtp, Town Of

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Austin WWTP

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Orleans Municipal WWTP

Orleans · 19 mi away

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Crothersville WWTP

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Scottsburg WWTP

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Salem 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 March 29, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · WWTP · Biosolids · all terms

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