How much wastewater does Hubbard City Of STP treat?

Hubbard City Of STP is permitted for a design flow of 0.35 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Hubbard City Of STP use?

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

What is the NPDES permit for Hubbard City Of STP?

The facility discharges under NPDES permit IA0031429, currently administratively continued, expiring November 2019.

Is Hubbard City Of STP in compliance?

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

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

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

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Hubbard City Of STP

Hubbard, IA 50122 · Hardin County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.35 MGD

NPDES permit: IA0031429; Administratively continued

Permit expires: November 2019

Population served: 860; CWNS 2022

Hubbard City Of STP is a publicly owned wastewater treatment works in Hubbard, Hardin County, Iowa, serving about 860 residents. It discharges under NPDES permit IA0031429 (administratively continued), which expires in November 2019, with 1 recorded violation in the last three years.

Treatment technology

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

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 1

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 Hubbard City Of STP.

No verified contacts on file yet

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Nearby wastewater treatment plants in Iowa

Radcliffe City Of STP

Radcliffe · 5 mi away

—

Zearing City Of STP

Zearing · 10 mi away

0.09 MGD

Mccallsburg City Of STP

Mccallsburg · 10 mi away

—

Eldora WWTP

Eldora · 12 mi away

0.59 MGD

St. Anthony City Of (irua)

Saint Anthony · 13 mi away

—

Union WWTP

Union · 14 mi away

—

Steamboat Rock City Of STP

Steamboat Rock · 14 mi away

0.02 MGD

Roland City Of STP

Roland · 14 mi away

0.51 MGD

Hubbard 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 20, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Activated sludge · Oxidation ditch · all terms

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