Campus Alert Archive
Pitt-Johnstown

Chlorine Reacts in Pool Vat at Pitt-Johnstown's Zamias Aquatics Center, Forcing Evacuation and Hazmat Response

PAchemical spilladvisorymedium confidence
Confirmed Threat

On Wednesday, September 17, 2025, a strong chlorine odor emanating from a chemical reaction inside the pool vat system at the Zamias Aquatics Center on the Pitt-Johnstown campus prompted an evacuation of the building and a hazmat investigation by the Richland Fire Department. Investigators determined that chlorine used for the pool had reacted with another substance inside the vat, generating the heavy odor. The building's pool pumps were shut down; the pool remained closed pending third-party assessment while the building itself was cleared and reopened.

Alerts
3
Response
—
Killed
—
Injured
—
Institution
University of Pittsburgh at Johnstown
Public Bachelors · PA
~2,700 students
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 ALERTPhone
Approximate reconstruction198 chars
The Zamias Aquatics Center is being evacuated due to a strong chemical odor. The Richland Fire Department is responding. Please exit the building immediately and avoid the area until further notice.

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

Richland Fire Department, which serves the Richland Township municipality that encompasses the Pitt-Johnstown campus, was the primary responding agency; the WJAC report notes a 911 call about a chlorine odor and possible hazmat scenario
The Zamias Aquatics Center houses Pitt-Johnstown's swimming pool and serves both athletic and recreational functions; the building is one of the main athletic facilities on the campus
UPDATEWebsite
Approximate reconstruction338 chars
Richland Fire Department has responded to the Zamias Aquatics Center and is investigating a strong odor of chlorine. Investigators believe chlorine used for the pool had a reaction to something inside the vat it is held in. The pool pumps have been shut down. No injuries have been reported. The building remains closed pending clearance.

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

The 'reaction to something inside the vat' language is deliberately imprecise; the specific contaminant was not publicly identified, but the mechanism is consistent with chlorine reacting with accumulated organic compounds or other pool chemicals in the vat lining
Shutting down the pool pumps is the correct immediate response to a chemical vat reaction: it stops circulation and prevents the reactive mixture from being distributed through the pool and building HVAC
ALL CLEARWebsite
Approximate reconstruction265 chars
The Zamias Aquatics Center building has been cleared and is safe to reopen. The pool will remain closed until a third-party assessment of the vat system can be completed and any necessary repairs made. We will communicate pool reopening plans as they are confirmed.

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

The distinction between the building all-clear and the continued pool closure is operationally important: the building's air quality was safe but the pool's chemical system required independent evaluation before resuming operations
Third-party assessment of pool chemical systems after a vat reaction is standard practice required by Pennsylvania Department of Health pool regulations
Context

Background

The University of Pittsburgh at Johnstown (Pitt-Johnstown) is a regional campus of the University of Pittsburgh system located in Richland Township, Cambria County, Pennsylvania, with an enrollment of approximately 2,700 students. The Zamias Aquatics Center, named after a major benefactor to the campus, serves as the primary aquatics facility for both intercollegiate swimming and recreational use. On September 17, 2025, a strong chlorine odor was detected in the building, prompting a 911 call and a response from the Richland Fire Department. WJAC-TV reported that a hazmat crew investigated after the building was evacuated. Fox8 reported that investigators determined chlorine in the pool vat had reacted with some unidentified substance inside the vat system. The pool pumps were shut down to halt circulation of the reactive mixture. No injuries were reported. The building was cleared and reopened, while the pool itself remained closed pending third-party assessment and repair of the vat system. Chlorine vat reactions are a recognized hazard in aquatic facilities: pool chemical systems often contain residual organic matter, scale deposits, or incompatible residues from previous chemical additions that can react with incoming chlorine to generate gas-phase chlorine and other reactive byproducts.
Analysis

Key Findings

The Zamias Aquatics Center incident illustrates a chlorine vat reaction mode distinct from the more commonly reported chlorine-acid mixing accident: here, chlorine reacted with an unidentified substance inside the vat itself, generating odor without the direct human error of the YSU/Barber's Chemicals pattern
Pitt-Johnstown's decision to close the pool while reopening the building reflects appropriate risk stratification: the atmospheric hazard was resolved, but the chemical system's integrity required independent verification
As a regional bachelors-level campus, Pitt-Johnstown's hazmat response relied entirely on the Richland Township Fire Department rather than an on-campus hazmat team, illustrating the fire-department dependency common at smaller institutions
Outcome
No injuries reported. Pool pumps shut down; pool closed pending third-party inspection and repair. Building reopened after hazmat clearance. Cause identified as chlorine reacting with unknown substance inside the pool vat system.
Provenance

Sources

  1. News
    911: Chlorine odor, possible hazmat scenario prompts evacuation of pool building at UPJ (WJAC-TV)
    wjactv.com
  2. News
    UPJ Zamias Aquatics Center Pool Closed (Fox8)
    fox8tv.com
Tags
chlorine-gaspool-chemicalsvat-reactionzamias-aquatics-centerhazmatpitt-johnstownrichland-fireno-injuriespennsylvaniapublic-bachelorspool-closed
Added May 2026Updated May 2026Via ingestion