What is the address of Elma WWTP?

The address on the plant’s EPA facility record is 190th St, Elma, IA 50628, in Howard County. Its coordinates are 43.2421, -92.4490. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Elma WWTP treat?

Elma WWTP treats an average of 0.08 MGD and is permitted for a design flow of 0.75 MGD.

What treatment technology does Elma WWTP use?

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

What is the NPDES permit for Elma WWTP?

The facility discharges under NPDES permit IA0021075, currently effective, expiring March 2030.

Is Elma WWTP in compliance?

Discharge monitoring reports show 4 violations at Elma WWTP in the last three years, 4 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Elma WWTP and how do I contact them?

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

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Elma WWTP

190th St, Elma, IA 50628 · Howard County · Publicly Owned Treatment Works

Average flow: 0.08 MGD

Design flow: 0.75 MGD

NPDES permit: IA0021075; Effective

Permit expires: March 2030

Population served: 683; CWNS 2022

Elma WWTP is a publicly owned wastewater treatment works in Elma, Howard County, Iowa treating an average of 0.08 million gallons per day against a permitted design capacity of 0.75 MGD, serving about 683 residents. It discharges under NPDES permit IA0021075 (effective), which expires in March 2030, with 4 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Elma WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 4

Effluent violations: 4

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

Key contacts

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

Unlock 1 verified contact

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

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Elma 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

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