Sue Data Centers

Data Center Registry

ISCorp Mequon Data Center (MQS5)

Mequon, Ozaukee County, Wisconsin

OperatingNo reception on recordRecord updated September 13, 2026

ISCorp Mequon Data Center (MQS5) is an operating data center in Mequon, Wisconsin (Ozaukee County), operated by ISCorp.

Every line on this page traces to a public source listed at the bottom. Where a figure was looked for and not found, the row says so. A blank is never a zero.

Facility record

Operating

Operator
ISCorp
Facility type
Data center
Location
10325 N. Port Washington Road, Mequon, Ozaukee County, WI, 53092
Coordinates
43.2053, -87.9244 (approximate)
Power capacity
Not established from a public source
Land
Not established from a public source
Investment
Not established from a public source
Announced
Not established from a public source
Utility
Not established from a public source
Power source
Grid
Cooling
Not established from a public source
Water use
Not established from a public source
Jobs
Not established from a public source
Public subsidy
Not established from a public source
Community reception
No reception on record
Source confidence
Confirmed by multiple independent sources or official documentation

Opposition and litigation at this site

Nothing on record as of September 13, 2026. No lawsuit, organized opposition, or contested hearing over ISCorp Mequon Data Center (MQS5) in Mequon, Ozaukee County, Wisconsin appears in the sources this registry tracks. That is an absence in our sources rather than a finding that none exists, and local opposition often predates any coverage a national dataset would pick up.

If you live near this site and something is happening that this page does not show, that is worth telling us. Send us the document and it goes in the record with the source attached. For sites where opposition is already established, see every contested site we track.

A new status, a permit, a reception finding, or a lawsuit. Nothing else, ever.

Power and water

Redundant hospital-grade generators and N+1 cooling; operator reports 100% uptime since inception.

Notes on the record

Tier III+, SSAE18-audited private-cloud data center with 8,000 sq ft of raised floor and 20,000 sq ft of operations space, redundant hospital-grade generators, N+1 cooling and a private dark-fiber metro ring. Directories and the Journal Sentinel map list TWO ISCorp Mequon facilities, "North MQN" at 10325 and "South MQN" at 10235 N. Port Washington Road, but only the 10325 building is described on ISCorp's own facilities page, so this record covers that building alone rather than emitting a second, thinly-sourced record.

What the record does not establish, and the document that would

In every fight on our tracker the decisive fact came out of a public records request. These are the requests for this site.

  • Power capacity in megawatts
  • Cooling method and water use
  • Tax abatements or other public subsidy
  • Permanent jobs promised
  • Land area
  • How the community has received it
  • Which utility serves it
Which document closes each gap
Power capacity in megawatts
The utility's large load service agreement, the interconnection request in the grid operator's queue, or the electrical site plan in the permit file.
Cooling method and water use
The water service agreement, any groundwater appropriation permit, and the mechanical narrative in the site plan.
Tax abatements or other public subsidy
The abatement, PILOT, or development agreement approved by the county, city, or development authority, and the state's data center sales tax exemption certificate if one was issued.
Permanent jobs promised
The economic development application or incentive agreement, which usually states a job commitment and a clawback.
Land area
The rezoning application, the plat, or the deed recorded with the county.
How the community has received it
Planning commission and governing body minutes, public comment records, and any petition or lawsuit filed in the county.
Which utility serves it
The electric service agreement or the utility's filing with the state public utility commission.

Have one of these documents? Send it to us and we will add it to the record with attribution.

Other sites within 30 miles

Distances are between recorded coordinates, many of which are a city or county centroid, so treat them as approximate. Cumulative load on one utility and one aquifer is the question a planning commission rarely asks.

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Questions people ask about this site

Is there opposition to the ISCorp Mequon Data Center (MQS5) in Mequon?

Nothing on record as of September 13, 2026. No lawsuit, organized opposition, or contested hearing over ISCorp Mequon Data Center (MQS5) in Mequon, Ozaukee County, Wisconsin appears in the sources this registry tracks. That is an absence in our sources rather than a finding that none exists, and local opposition often predates any coverage a national dataset would pick up.

Has anyone filed a lawsuit over the ISCorp Mequon Data Center (MQS5)?

No lawsuit over ISCorp Mequon Data Center (MQS5) appears in the record we track as of September 13, 2026. Residents most often reach a lawyer over water supply, well drawdown, noise from cooling plant, property value, or a rezoning approved without the notice the ordinance required. If any of that is happening near this site, it is worth a review whether or not a case has been filed yet.

How much water does ISCorp Mequon Data Center (MQS5) use?

No water withdrawal figure for ISCorp Mequon Data Center (MQS5) is on record here. Water use is rarely published voluntarily; it usually surfaces through a utility service agreement or a state withdrawal permit, both of which are public records. We leave the number blank rather than estimate one.

Who operates ISCorp Mequon Data Center (MQS5), and how big is it?

ISCorp is the operator on record. No capacity figure is on record for this site.

How to cite this page

SueDataCenters.org Data Center Registry, "ISCorp Mequon Data Center (MQS5)," updated September 13, 2026, https://suedatacenters.org/data-centers/iscorp-mequon-mqs5-wi.

Facility data from Compute Atlas (E. Kubiak), version 1.34.0 (September 21, 2026), licensed CC BY 4.0, record https://www.compute-atlas.com/facilities/iscorp-mequon-mqs5-wi, retrieved October 1, 2026.

Corrections with a public source are welcome at the Compute Atlas record or through our contact page. The whole registry is available as CSV and JSON under CC BY 4.0.

Sources for this record

As compiled and cited by Compute Atlas, with our own reporting appended. Archived links are used where the original has moved.

  1. 1.ISCorp Data Centers, MQS5, 10325 N. Port Washington Rd., Mequon, WI 53092 (Tier III+, SSAE18, 8,000 sq ft raised floor) · ISCorp · retrieved September 13, 2026
  2. 2.Is there a data center in your community? Here's a map of the data centers in Wisconsin (lists "ISCorp North MQN" and "ISCorp South MQN", Mequon) · Milwaukee Journal Sentinel via Yahoo News · retrieved September 13, 2026
  3. 3.OpenStreetMap/Nominatim geocode of 10325 North Port Washington Road, Mequon, Ozaukee County (coordinate provenance) · OpenStreetMap contributors · retrieved September 13, 2026

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