What is the address of Laurel, City Of STP?

The address on the plant’s EPA facility record is 2649 - 330th Street, Laurel, IA 50141, in Marshall County. Its coordinates are 41.8905, -92.9129. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Laurel, City Of STP treat?

Laurel, City Of STP treats an average of 0.02 MGD and is permitted for a design flow of 0.09 MGD.

What treatment technology does Laurel, City Of STP use?

Klarifi has identified 2 treatment structures and unit processes at the Laurel facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Laurel, City Of STP?

The facility discharges under NPDES permit IA0072214, currently effective, expiring May 2030.

Is Laurel, City Of STP in compliance?

Discharge monitoring reports show 48 violations at Laurel, City Of STP in the last three years, 48 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Laurel, City Of STP

2649 - 330th Street, Laurel, IA 50141 · Marshall County · Publicly Owned Treatment Works

Average flow: 0.02 MGD

Design flow: 0.09 MGD

NPDES permit: IA0072214; Effective

Permit expires: May 2030

Population served: 283; CWNS 2022

Laurel, City Of STP is a publicly owned wastewater treatment works in Laurel, Marshall County, Iowa treating an average of 0.02 million gallons per day against a permitted design capacity of 0.09 MGD, serving about 283 residents. It discharges under NPDES permit IA0072214 (effective), which expires in May 2030, with 48 recorded violations in the last three years.

Treatment technology

2 treatment structures and unit processes identified at Laurel, City Of STP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 48

Effluent violations: 48

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

Key contacts

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

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

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Nearby wastewater treatment plants in Iowa

Gilman City Of STP

Gilman · 6 mi away

0.02 MGD

Melbourne City Of STP

Melbourne · 11 mi away

0.1 MGD

Legrand City Of STP

Le Grand · 11 mi away

0.08 MGD

Marshalltown City Of STP

Marshalltown · 12 mi away

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Montour City Of STP

Montour · 13 mi away

0.03 MGD

Kellogg WWTP

Kellogg · 13 mi away

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Baxter WWTP

Baxter · 13 mi away

0.21 MGD

Sac And Fox Settlement Lagoon

Tama · 14 mi away

0.21 MGD

Laurel, 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 August 19, 2026.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms

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