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Investigation Launched After Second Purgatory Landfill Fire Causes Odors

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Thick, yellowish smoke drifts through a heavy metal grate, with the silhouette of a Utah canyon ridge visible in the background through the haze.
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Washington City and the Utah Department of Environmental Quality are investigating a recurring fire at the ONP Purgatory Landfill that has caused persistent odors. A second fire occurred on July 12, 2026, requiring assistance from the Washington City Fire Department.

Key takeaways

  • A second fire occurred at the ONP Purgatory Landfill on the night of July 12, 2026.
  • The Washington City Fire Department assisted ONP employees in extinguishing the July 12 fire.
  • Both Washington City and the Utah DEQ are investigating the persistent odors caused by the landfill activity.
  • The Washington City Fire Department serves a population that has grown to nearly 35,000 residents.
  • The incident occurs amid ongoing state-level efforts by the DEQ to monitor air quality and compliance.

Washington City officials and the Utah Department of Environmental Quality are investigating persistent odors following a recurring fire at the ONP Purgatory Landfill. A second blaze at the facility occurred on the night of July 12, 2026, prompting the Washington City Fire Department to work alongside ONP employees to extinguish the flames.

Recent Landfill Fire Response

The Washington City Fire Department confirmed that its personnel assisted employees from ONP, LLC, in managing the fire that broke out on July 12, 2026. This latest incident follows a previous fire at the Purgatory Landfill that had already drawn attention from municipal authorities and environmental regulators.

According to an update from Washington City on July 13, 2026, both city officials and the Department of Environmental Quality (DEQ) are monitoring the situation closely. The recurring nature of the fires has raised concerns regarding air quality and the impact of landfill emissions on the surrounding community.

Fire Department Capabilities

The Washington City Fire Department, led by Fire Chief Matt Evans, serves a rapidly growing population that has increased from 8,500 residents in 2000 to nearly 35,000 today. The department's coverage area spans approximately 50 square miles of diverse terrain, including residential, commercial, industrial, and agricultural zones, as well as sections of a major interstate.

In response to the recent landfill activity, the department continues to manage local safety risks. The agency, which holds an Advanced Emergency Medical Service license, operates as a non-transporting agency and relies on a staff of 24 full-time firefighters and 28 part-time firefighters to protect the growing municipality.

State Air Quality Oversight

The ongoing investigation into the landfill fire and subsequent odors coincides with a broader regulatory focus on air quality in the state. The Utah Department of Environmental Quality's Air Quality Board has been actively reviewing various state implementation plans and air quality rules throughout 2026.

Recent board activities have included discussions on emergency controls, air toxics, and compliance measures. These regulatory frameworks are designed to manage emissions from various sources to ensure public safety, a priority that becomes increasingly critical as industrial and waste management activities intersect with growing residential areas.

Ongoing Environmental Monitoring

The Purgatory Landfill incident has added to the regulatory workload of the DEQ, which manages complex air quality issues ranging from ozone and particulate matter to regional haze. The agency's oversight includes monitoring compliance and managing fugitive dust control plans to mitigate environmental impact.

As the investigation into the ONP, LLC facility continues, the community remains focused on the effectiveness of current fire suppression and odor mitigation efforts. Washington City has indicated that it will provide further updates as more information regarding the landfill's status becomes available.

Looking Ahead

The Washington City Council and other municipal bodies continue to manage various community issues, including land use and public safety. While the city has scheduled several upcoming meetings for August 2026 to discuss matters such as the River Shadow Estates and Sunrise Valley developments, the landfill fire remains a primary concern for local residents and environmental health officials.

Community Safety Resources

For residents seeking information on fire safety or community updates, the Washington City Fire Department maintains a presence on social media and provides resources on summer heat safety and fire restrictions. The city continues to prioritize public education and disaster management as it navigates the challenges of rapid population growth and industrial activity.

Sources used (4)

How this story was made

Corroborated by 2 independent sources

Utah News confirmed this story across multiple independent newsrooms before publishing.

washingtonutah.govdeq.utah.gov

4 sources gathered

Coverage collected from the outlets listed above. · August 20, 2026

Written by AI

Utah News AI (on-device model) · drawing on 2 outlets · August 9, 2026

Quality checks

Passed editorial quality review (98/100)

Published

15 days ago · August 9, 2026

This story was written by AI from the public sources listed above and passed automated quality review before publishing.

Article details

CategoryMulti-Source
CityWashington
ToneNeutral
SourceAI Generated