What is the address of Holstein WWTP?

The address on the plant’s EPA facility record is German Ave, Holstein, IA 51025, in Ida County. Its coordinates are 42.5212, -95.5816. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Holstein WWTP treat?

Holstein WWTP treats an average of 0.23 MGD.

What treatment technology does Holstein WWTP use?

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

What is the NPDES permit for Holstein WWTP?

The facility discharges under NPDES permit IA0021954, currently effective, expiring February 2029.

Is Holstein WWTP in compliance?

Discharge monitoring reports show 9 violations at Holstein WWTP in the last three years, 9 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Holstein WWTP and how do I contact them?

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

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Holstein WWTP

German Ave, Holstein, IA 51025 · Ida County · Publicly Owned Treatment Works

Average flow: 0.23 MGD

Design flow: —

NPDES permit: IA0021954; Effective

Permit expires: February 2029

Population served: 1,501; CWNS 2022

Holstein WWTP is a publicly owned wastewater treatment works in Holstein, Ida County, Iowa treating an average of 0.23 million gallons per day, serving about 1,501 residents. It discharges under NPDES permit IA0021954 (effective), which expires in February 2029, with 9 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Holstein WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 9

Effluent violations: 9

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

Key contacts

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

Unlock 1 verified contact

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

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Holstein 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 20, 2025.

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

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