What is the address of Preston WWTP?

The address on the plant’s EPA facility record is 435th Ave, Preston, IA 52069, in Jackson County. Its coordinates are 42.0564, -90.3931. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Preston WWTP treat?

Preston WWTP treats an average of 0.08 MGD and is permitted for a design flow of 0.67 MGD.

What is the NPDES permit for Preston WWTP?

The facility discharges under NPDES permit IA0047864, currently effective, expiring November 2028.

Is Preston WWTP in compliance?

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

Who operates Preston WWTP and how do I contact them?

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

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Preston WWTP

435th Ave, Preston, IA 52069 · Jackson County · Publicly Owned Treatment Works

Average flow: 0.08 MGD

Design flow: 0.67 MGD

NPDES permit: IA0047864; Effective

Permit expires: November 2028

Population served: 949; CWNS 2022

Preston WWTP is a publicly owned wastewater treatment works in Preston, Jackson County, Iowa treating an average of 0.08 million gallons per day against a permitted design capacity of 0.67 MGD, serving about 949 residents. It discharges under NPDES permit IA0047864 (effective), which expires in November 2028, with 1 recorded violation in the last three years.

Treatment technology

Treatment structures and unit processes at Preston WWTP.

Treatment structure data not yet analyzed for this facility.

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

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

Unlock 1 verified contact

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

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Preston 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 February 26, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Filter press · FOG · all terms

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