What is the address of Pierson City Of STP?

The address on the plant’s EPA facility record is 1162 Minnesota Ave, Pierson, IA 51048, in Woodbury County. Its coordinates are 42.5366, -95.8575. For some plants the record holds the utility’s mailing address rather than the plant gate.

What treatment technology does Pierson City Of STP use?

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

What is the NPDES permit for Pierson City Of STP?

The facility discharges under NPDES permit IA0033685, currently administratively continued, expiring March 2016.

Is Pierson City Of STP in compliance?

Discharge monitoring reports show 5 violations at Pierson City Of STP in the last three years, 5 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Pierson City Of STP and how do I contact them?

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

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Pierson City Of STP

1162 Minnesota Ave, Pierson, IA 51048 · Woodbury County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: IA0033685; Administratively continued

Permit expires: March 2016

Population served: 337; CWNS 2022

Pierson City Of STP is a publicly owned wastewater treatment works in Pierson, Woodbury County, Iowa, serving about 337 residents. It discharges under NPDES permit IA0033685 (administratively continued), which expires in March 2016, with 5 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Pierson City Of STP.

Available with a free Klarifi account

See the full treatment train at Pierson City Of STP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 5

Effluent violations: 5

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

Key contacts

1 verified contact for Pierson City Of STP, with validated emails and direct phone numbers.

Unlock 1 verified contact

Names, validated emails and direct phone numbers for decision-makers at Pierson City Of STP, plus the full compliance history and discharge data.

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Pierson City Of STP: 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 17, 2025.

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

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