What is the address of Maxwell City Of STP?

The address on the plant’s EPA facility record is PO Box 215, Maxwell, IA 50161, in Story County. Its coordinates are 41.8886, -93.3883. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Maxwell City Of STP treat?

Maxwell City Of STP treats an average of 0.12 MGD and is permitted for a design flow of 0.6 MGD.

What treatment technology does Maxwell City Of STP use?

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

What is the NPDES permit for Maxwell City Of STP?

The facility discharges under NPDES permit IA0041793, currently effective, expiring May 2031.

Is Maxwell City Of STP in compliance?

Discharge monitoring reports show no violations at Maxwell City Of STP in the last three years.

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

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

Try for free Log in

Maxwell City Of STP

PO Box 215, Maxwell, IA 50161 · Story County · Publicly Owned Treatment Works

Average flow: 0.12 MGD

Design flow: 0.6 MGD

NPDES permit: IA0041793; Effective

Permit expires: May 2031

Population served: 859; CWNS 2022

Maxwell City Of STP is a publicly owned wastewater treatment works in Maxwell, Story County, Iowa treating an average of 0.12 million gallons per day against a permitted design capacity of 0.6 MGD, serving about 859 residents. It discharges under NPDES permit IA0041793 (effective), which expires in May 2031, with 0 recorded violations in the last three years.

Treatment technology

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

Available with a free Klarifi account

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

Create a free account

Compliance snapshot (last 3 years)

Total violations: 0

Effluent violations: 0

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

Key contacts

1 verified contact for Maxwell 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 Maxwell City Of STP, plus the full compliance history and discharge data.

Try Klarifi free

Nearby wastewater treatment plants in Iowa

Collins City Of STP

Collins · 4 mi away

—

Nevada City Of WWTP

Nevada · 6 mi away

1.37 MGD

Cambridge City Of STP

Cambridge · 7 mi away

—

Colo City Of STP

Colo · 9 mi away

—

Elkhart City Of STP

Elkhart · 9 mi away

0.16 MGD

Huxley City Of STP

Huxley · 9 mi away

0.61 MGD

Mingo WWTP

Mingo · 10 mi away

—

Rhodes City Of STP

Rhodes · 11 mi away

—

Maxwell 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 3, 2026.

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

Try Klarifi for free

Create your own trial account and explore how Klarifi can help you.

Try for free