What is the address of Copper Harbor WWTP?

The address on the plant’s EPA facility record is 15053 US 41, Copper Harbor, MI 49918, in Keweenaw County. Its coordinates are 47.4672, -87.8743. For some plants the record holds the utility’s mailing address rather than the plant gate.

How much wastewater does Copper Harbor WWTP treat?

Copper Harbor WWTP treats an average of 0.03 MGD.

What treatment technology does Copper Harbor WWTP use?

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

What is the NPDES permit for Copper Harbor WWTP?

The facility discharges under NPDES permit MIG570178, currently administratively continued, expiring April 2025.

Is Copper Harbor WWTP in compliance?

Discharge monitoring reports show 41 violations at Copper Harbor WWTP in the last three years, 41 of them effluent limit exceedances. The full history is available in Klarifi.

Who operates Copper Harbor WWTP and how do I contact them?

Copper Harbor WWTP is a publicly owned treatment works in Copper Harbor, Michigan. Klarifi lists 2 verified decision-maker contacts for this facility, available with a free trial.

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Copper Harbor WWTP

15053 US 41, Copper Harbor, MI 49918 · Keweenaw County · Publicly Owned Treatment Works

Average flow: 0.03 MGD

Design flow: —

NPDES permit: MIG570178; Administratively continued

Permit expires: April 2025

Population served: 100; CWNS 2022

Copper Harbor WWTP is a publicly owned wastewater treatment works in Copper Harbor, Keweenaw County, Michigan treating an average of 0.03 million gallons per day, serving about 100 residents. It discharges under NPDES permit MIG570178 (administratively continued), which expires in April 2025, with 41 recorded violations in the last three years.

Treatment technology

One treatment structure or unit process identified at Copper Harbor WWTP.

Available with a free Klarifi account

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

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Compliance snapshot (last 3 years)

Total violations: 41

Effluent violations: 41

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

Key contacts

2 verified contacts for Copper Harbor WWTP, with validated emails and direct phone numbers.

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

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Copper Harbor 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 March 19, 2025.

Wastewater terms: POTW · MGD · NPDES permit · Inflow and infiltration · Equalization tank · Centrate · all terms

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