What is the address of Smithland City Of STP?

The address on the plant’s EPA facility record is 301 East Main, Smithland, IA 51056, in Woodbury County. Its coordinates are 42.2287, -95.9246. For some plants the record holds the utility’s mailing address rather than the plant gate.

What treatment technology does Smithland City Of STP use?

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

What is the NPDES permit for Smithland City Of STP?

The facility discharges under NPDES permit IA0056341, currently effective, expiring July 2031.

Is Smithland City Of STP in compliance?

Discharge monitoring reports show 7 violations at Smithland City Of STP in the last three years, 1 of them effluent limit exceedances. The full history is available in Klarifi.

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

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

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Smithland City Of STP

301 East Main, Smithland, IA 51056 · Woodbury County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: IA0056341; Effective

Permit expires: July 2031

Population served: 181; CWNS 2022

Smithland City Of STP is a publicly owned wastewater treatment works in Smithland, Woodbury County, Iowa, serving about 181 residents. It discharges under NPDES permit IA0056341 (effective), which expires in July 2031, with 7 recorded violations in the last three years.

Treatment technology

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

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 7

Effluent violations: 1

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

Key contacts

Decision-makers at Smithland City Of STP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Iowa

Oto City Of STP

Oto · 5 mi away

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Mapleton City Of STP

Mapleton · 8 mi away

0.11 MGD

Hornick City Of STP

Hornick · 9 mi away

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Danbury City Of STP

Danbury · 10 mi away

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Anthon City Of STP

Anthon · 12 mi away

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Whiting City Of STP

Whiting · 14 mi away

0.05 MGD

Sloan City Of STP

Sloan · 15 mi away

0.08 MGD

Ute City Of STP

Ute · 17 mi away

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Smithland 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 February 1, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Significant industrial user · WWTP · all terms

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