What is the address of Porter WWTP?

The address on the plant’s EPA facility record is Lone Tree St, Porter, MN 56280, in Yellow Medicine County. Its coordinates are 44.6464, -96.1652. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Porter WWTP treat?

Porter WWTP is permitted for a design flow of 0.02 MGD. Its average daily flow is not available in the current EPA data.

What treatment technology does Porter WWTP use?

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

What is the NPDES permit for Porter WWTP?

The facility discharges under NPDES permit MNG585128, currently effective, expiring November 2028.

Is Porter WWTP in compliance?

Discharge monitoring reports show 12 violations at Porter WWTP in the last three years, 8 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Porter WWTP and how do I contact them?

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

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Porter WWTP

Lone Tree St, Porter, MN 56280 · Yellow Medicine County · Publicly Owned Treatment Works

Average flow: —

Design flow: 0.02 MGD

NPDES permit: MNG585128; Effective

Permit expires: November 2028

Population served: 166; CWNS 2022

Porter WWTP is a publicly owned wastewater treatment works in Porter, Yellow Medicine County, Minnesota, serving about 166 residents. It discharges under NPDES permit MNG585128 (effective), which expires in November 2028, with 12 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Porter WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 12

Effluent violations: 8

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

Key contacts

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

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

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Nearby wastewater treatment plants in Minnesota

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St Leo WWTP

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Minneota WWTP

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Ivanhoe WWTP

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Ghent

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Hendricks WWTP

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Clarkfield WWTP

Clarkfield · 20 mi away

0.91 MGD

Porter 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 November 6, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Tertiary treatment · Significant industrial user · all terms

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