What is the address of Little Sioux River Sioux STP?

The address on the plant’s EPA facility record is NW Quarter Of Section 24 In Township 81 Range45, Little Sioux, IA 51545, in Harrison County. Its coordinates are 41.8110, -96.0361. For some plants the record holds the utility’s mailing address rather than the plant gate.

What treatment technology does Little Sioux River Sioux STP use?

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

What is the NPDES permit for Little Sioux River Sioux STP?

The facility discharges under NPDES permit IA0080276, currently administratively continued, expiring April 2019.

Is Little Sioux River Sioux STP in compliance?

Discharge monitoring reports show 6 violations at Little Sioux River Sioux STP in the last three years. The full history is available in Klarifi.

Who operates Little Sioux River Sioux STP and how do I contact them?

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

Try for free Log in

Little Sioux River Sioux STP

NW Quarter Of Section 24 In Township 81 Range45, Little Sioux, IA 51545 · Harrison County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: IA0080276; Administratively continued

Permit expires: April 2019

Population served: —; CWNS 2022

Little Sioux River Sioux STP is a publicly owned wastewater treatment works in Little Sioux, Harrison County, Iowa. It discharges under NPDES permit IA0080276 (administratively continued), which expires in April 2019, with 6 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Little Sioux River Sioux STP.

Available with a free Klarifi account

See the full treatment train at Little Sioux River Sioux STP: structures, unit processes and planned upgrades, with exact unit counts.

Create a free account

Compliance snapshot (last 3 years)

Total violations: 6

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 Little Sioux River Sioux STP, with validated emails and direct phone numbers.

Unlock 1 verified contact

Names, validated emails and direct phone numbers for decision-makers at Little Sioux River Sioux STP, plus the full compliance history and discharge data.

Try Klarifi free

Nearby wastewater treatment plants in Iowa

Pisgah City Of STP

Pisgah · 6 mi away

—

Mondamin City Of STP

Mondamin · 7 mi away

0.03 MGD

Blencoe City Of STP

Blencoe · 8 mi away

0.01 MGD

Moorhead City Of STP

Moorhead · 12 mi away

—

Modale, City Of STP

Modale · 13 mi away

—

Onawa City Of STP

Onawa · 14 mi away

0.22 MGD

Soldier City Of STP

Soldier · 18 mi away

—

Woodbine WWTP

Woodbine · 18 mi away

0.13 MGD

Little Sioux River Sioux 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 September 11, 2026.

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

Try Klarifi for free

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

Try for free