What is the address of Lewis WWTP?

The address on the plant’s EPA facility record is 2/3 Mile N Of Main St & 1/5 Mile W Of 1st St, Lewis, IA 51544, in Cass County. Its coordinates are 40.0715, -86.1494. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Lewis WWTP treat?

Lewis WWTP is permitted for a design flow of 0.42 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Lewis WWTP use?

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

What is the NPDES permit for Lewis WWTP?

The facility discharges under NPDES permit IA0057487, currently effective, expiring September 2028.

Is Lewis WWTP in compliance?

Discharge monitoring reports show no violations at Lewis WWTP in the last three years.

Who operates Lewis WWTP and how do I contact them?

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

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Lewis WWTP

2/3 Mile N Of Main St & 1/5 Mile W Of 1st St, Lewis, IA 51544 · Cass County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.42 MGD

NPDES permit: IA0057487; Effective

Permit expires: September 2028

Population served: 357; CWNS 2022

Lewis WWTP is a publicly owned wastewater treatment works in Lewis, Cass County, Iowa, serving about 357 residents. It discharges under NPDES permit IA0057487 (effective), which expires in September 2028, with 0 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Lewis WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 0

Effluent violations: 0

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

Key contacts

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

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

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Nearby wastewater treatment plants in Iowa

Ionia WWTP

Ionia · 208 mi away

—

Leclaire City Of STP

Le Claire · 244 mi away

0.37 MGD

Clinton WWTP

Clinton · 245 mi away

6.52 MGD

Princeton City Of STP

Princeton · 246 mi away

0.07 MGD

Sabula City Of STP

Sabula · 250 mi away

0.06 MGD

Andover City Of STP

Andover · 251 mi away

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Mccausland City Of STP

Mccausland · 252 mi away

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Davenport Wastewater Treatment Plant

Davenport · 254 mi away

25.36 MGD

Lewis 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 13, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Biological nutrient removal · Tertiary treatment · all terms

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