What is the address of Madison-Treatment Plant?

The address on the plant’s EPA facility record is 116 W. Center St., Madison, SD 57042, in Lake County. Its coordinates are 44.0052, -97.1149. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Madison-Treatment Plant treat?

Madison-Treatment Plant is permitted for a design flow of 1.6 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Madison-Treatment Plant use?

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

What is the NPDES permit for Madison-Treatment Plant?

The facility discharges under NPDES permit SD0020010, currently effective, expiring June 2027.

Is Madison-Treatment Plant in compliance?

Discharge monitoring reports show no violations at Madison-Treatment Plant in the last three years.

Who operates Madison-Treatment Plant and how do I contact them?

Madison-Treatment Plant is a publicly owned treatment works in Madison, South Dakota. Klarifi lists decision-maker contacts for this facility, available with a free trial.

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Madison-Treatment Plant

116 W. Center St., Madison, SD 57042 · Lake County · Publicly Owned Treatment Works

Average flow: —

Design flow: 1.6 MGD

NPDES permit: SD0020010; Effective

Permit expires: June 2027

Population served: —; CWNS 2022

Madison-Treatment Plant is a publicly owned wastewater treatment works in Madison, Lake County, South Dakota. It discharges under NPDES permit SD0020010 (effective), which expires in June 2027, with 0 recorded violations in the last three years.

Treatment technology

3 treatment structures and unit processes identified at Madison-Treatment Plant.

Available with a free Klarifi account

See the full treatment train at Madison-Treatment Plant: structures, unit processes and planned upgrades, with exact unit counts.

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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.

EPA enforcement history

Federal civil enforcement cases, compliance inspections and informal actions recorded for Madison-Treatment Plant in EPA's ICIS system.

Formal actions: 0; none on record

EPA inspections: 1; latest Mar 2014

No formal federal enforcement case is on record for this plant.

Full case history with a free Klarifi account

Every action against Madison-Treatment Plant with dates, milestones, violation types and EPA's complete case summaries, plus inspections and informal actions.

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Key contacts

Decision-makers at Madison-Treatment Plant.

No verified contacts on file yet

Klarifi verifies plant and municipal decision-makers continuously. Start a free trial to browse contacts at nearby plants and flag this one for verification.

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Madison-Treatment Plant: 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 June 10, 2025.

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

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