What is the address of Macksburg, City Of STP?

The address on the plant’s EPA facility record is 1391 190th Street, Macksburg, IA 50155, in Madison County. Its coordinates are 41.2184, -94.1956. For some plants the record holds the utility’s mailing address rather than the plant gate.

What treatment technology does Macksburg, City Of STP use?

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

What is the NPDES permit for Macksburg, City Of STP?

The facility discharges under NPDES permit IA0079928, currently effective, expiring December 2029.

Is Macksburg, City Of STP in compliance?

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

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

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

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Macksburg, City Of STP

1391 190th Street, Macksburg, IA 50155 · Madison County · Publicly Owned Treatment Works

Average flow: —

Design flow: —

NPDES permit: IA0079928; Effective

Permit expires: December 2029

Population served: 97; CWNS 2022

Macksburg, City Of STP is a publicly owned wastewater treatment works in Macksburg, Madison County, Iowa, serving about 97 residents. It discharges under NPDES permit IA0079928 (effective), which expires in December 2029, with 1 recorded violation in the last three years.

Treatment technology

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

Available with a free Klarifi account

See the full treatment train at Macksburg, 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 Macksburg, City Of STP.

No verified contacts on file yet

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Macksburg, 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 28, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Lift station · Sludge dewatering · all terms

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