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WSU

Legionella in Six Buildings Shuts Down a Detroit University's Residence Tower

MIpublic healthadvisorymedium confidence
Confirmed Threat

On May 29, 2018, Wayne State University notified its community that an employee in the Faculty Administration Building had been diagnosed with Legionnaires' disease, triggering an emergency campus-wide water-systems inspection. Within ten days, Legionella bacteria were confirmed in three cooling towers and three bathroom fixtures across six campus buildings, and the Towers Residence Suites were closed while its rooftop cooling tower was replaced.

Alerts
3
Response
min
Killed
0
Injured
3
Institution
Wayne State University
Public R1 · MI
~26,700 studentsWayne State Emergency Alert
Confirmed Timeline

Alert Sequence

3 messages in sequence

Some alert texts below are approximate reconstructions from news coverage, not confirmed verbatim transcripts. Reconstructed texts are shown in italic with a dashed border. Verified verbatim texts have a solid border and are marked accordingly.

INITIAL ALERTEmail
Wayne State University is aware that an employee who works in the Faculty Administration Building has been diagnosed with Legionnaires' disease. We are taking immediate steps to investigate the source of the bacteria that may have caused the illness. As a precautionary measure, one of the rooftop air-handling units that brings air into the FAB has been shut down and cleaned, and all cooling towers at the FAB are being sampled for Legionella. The health and safety of our campus community is our priority.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The announcement on May 29 focused narrowly on the Faculty Administration Building, before campus-wide testing had been completed; later results expanded the positive findings to five additional buildings.
The phrase 'precautionary measure' was used despite a confirmed human case -- a communication pattern common in early Legionella campus responses when the source is still being traced.
Legionella is not spread person-to-person; the risk is inhalation of aerosolized water droplets from cooling towers, showerheads, or decorative fountains.
UPDATEEmail
Wayne State University has received preliminary results from environmental water sampling conducted across campus. Legionella bacteria were identified in cooling towers at the Towers Residence Suites, Purdy/Kresge Library, and the College of Education Building, as well as in bathroom fixtures in the Faculty Administration Building, Scott Hall, and the Cohn Building. Remediation of the three cooling towers has begun using the prescribed disinfection process. The affected bathrooms are closed pending further evaluation. The Detroit Health Department and the Michigan Department of Health and Human Services have been alerted. We will provide further updates as remediation progresses.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The university announced positive results in six locations simultaneously -- an unusually broad spread that prompted significant local media coverage and questions about the adequacy of the campus water-safety program.
Naming individual buildings and room numbers (Scott Hall near room 1200, Cohn Building near room 118) gave community members specific information to self-assess exposure risk.
The Towers Residence Suites is a student housing complex; the cooling-tower finding there raised particular concern about residential exposure during summer sessions.
UPDATEEmail
Wayne State University is providing an update on Legionella remediation. PathCon Laboratories, our outside remediation experts, has retested all campus cooling towers. With the exception of the Towers Residence Suites, all other cooling towers show extremely low or non-detectable levels of Legionella. Because of the elevated levels found at the Towers, the university has decided to replace the rooftop cooling tower entirely. This work will require several more weeks before the building can be reoccupied. Two contractors working on the Anthony Wayne Drive Apartments have been diagnosed with Legionnaires' disease. We continue to cooperate fully with public health authorities.

This text has been reconstructed from news coverage and may not reflect the exact original wording.

The decision to replace rather than disinfect the Towers Residence Suites cooling tower reflects the severity of persistent contamination; disinfection had not reduced levels to acceptable thresholds.
The two contractor cases (workers on the Anthony Wayne Drive Apartments) represent secondary exposure from a source connected to the campus water system, broadening the public health footprint of the outbreak.
The July update disclosed 3 total Legionnaires' cases linked to campus (1 employee in May, 2 contractors in summer) -- each case requires hospitalization-level treatment.
Context

Background

Wayne State University's 2018 Legionella outbreak was one of the most extensively documented campus water-safety incidents of that decade. The episode began May 29, 2018 when an employee in the Faculty Administration Building was diagnosed with Legionnaires' disease -- a severe pneumonia caused by inhaling aerosolized water droplets containing Legionella pneumophila. Routine campus testing then identified the bacteria in six buildings: cooling towers at the Towers Residence Suites, Purdy/Kresge Library, and the College of Education Building, plus bathroom fixtures in three other buildings. The Towers Residence Suites -- a student residential complex -- remained closed while its rooftop cooling tower was replaced after disinfection failed to bring levels down. By summer, two contractors working on a nearby campus construction project had also been diagnosed, raising the total to three cases. The Detroit Health Department and Michigan DHHS were notified throughout. The outbreak prompted WSU to develop a comprehensive water management plan that became a model for higher-education water safety programs nationally, according to the campus newspaper's later reporting.
Analysis

Key Findings

An employee Legionnaires' diagnosis on May 29 triggered campus-wide sampling that revealed contamination in six buildings across multiple building types (offices, library, education building, residence hall)
The Towers Residence Suites cooling tower was replaced entirely after disinfection could not reduce Legionella to acceptable levels -- a significant infrastructure decision mid-summer
Two contractor cases in summer 2018 extended the outbreak beyond the initial employee case, for a total of three Legionnaires' disease diagnoses
WSU subsequently developed a campus water management plan that was cited as a model for higher education institutions
Outcome
Three campus employees or contractors were ultimately diagnosed with Legionnaires' disease. The Towers Residence Suites cooling tower was replaced; all other cooling towers returned to non-detectable or extremely low Legionella levels by mid-summer 2018. The Detroit Health Department and Michigan DHHS were notified.
Provenance

Sources

  1. News
  2. News
  3. News
  4. News
  5. News
  6. Student Paper
  7. Official
Tags
legionellalegionnaires-diseasepublic-healthwater-safetycooling-towerresidence-hallmichigandetroitmulti-building
Added May 2026Updated May 2026Via ingestion