How much wastewater does Hartley WWTP treat?

Hartley WWTP treats an average of 0.27 MGD and is permitted for a design flow of 1.7 MGD.

What treatment technology does Hartley WWTP use?

Klarifi has identified 3 treatment structures and unit processes at the Hartley facility. The full treatment train, with exact unit counts, is shown in Klarifi with a free account.

What is the NPDES permit for Hartley WWTP?

The facility discharges under NPDES permit IA0036480, currently effective, expiring November 2029.

Is Hartley WWTP in compliance?

Discharge monitoring reports show 7 violations at Hartley WWTP in the last three years, 7 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Hartley WWTP and how do I contact them?

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

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Hartley WWTP

Hartley, IA 51346 · Obrien County · Publicly Owned Treatment Works

Average flow: 0.27 MGD

Design flow: 1.7 MGD

NPDES permit: IA0036480; Effective

Permit expires: November 2029

Population served: 1,748; CWNS 2022

Hartley WWTP is a publicly owned wastewater treatment works in Hartley, Obrien County, Iowa treating an average of 0.27 million gallons per day against a permitted design capacity of 1.7 MGD, serving about 1,748 residents. It discharges under NPDES permit IA0036480 (effective), which expires in November 2029, with 7 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Hartley WWTP.

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See the full treatment train at Hartley WWTP: structures, unit processes and planned upgrades, with exact unit counts.

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Compliance snapshot (last 3 years)

Total violations: 7

Effluent violations: 7

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

Key contacts

1 verified contact for Hartley WWTP, with validated emails and direct phone numbers.

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Names, validated emails and direct phone numbers for decision-makers at Hartley WWTP, plus the full compliance history and discharge data.

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Nearby wastewater treatment plants in Iowa

Everly WWTP

Everly · 8 mi away

0.08 MGD

Primghar Municipal Light Plant

Primghar · 10 mi away

0.29 MGD

Melvin City Of STP

Melvin · 10 mi away

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Sanborn WWTP

Sanborn · 10 mi away

0.6 MGD

Royal WWTP

Royal · 12 mi away

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Sutherland Stl

Sutherland · 14 mi away

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Archer City Of STP

Archer · 14 mi away

0.0054 MGD

Calumet City Of STP

Calumet · 16 mi away

—

Hartley WWTP: 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 January 25, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Sludge dewatering · Biological nutrient removal · all terms

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