Lithium-Ion Battery Fire Lawsuits and Potential Danger

A hazardous lithium-ion battery fire at a major water facility in La Verne forced residents from their homes, disrupted nearby schools and businesses, sent smoke over surrounding neighborhoods and triggered a large hazardous-materials response Tuesday.

The fire broke out September 22, 2026, at a battery energy storage system at the Metropolitan Water District of Southern California facility in the 3200 block of Wheeler Avenue, near a solar panel field on the northeast side of the property. The sprawling site also contains the F.E. Weymouth Water Treatment Plant.

Residents around Wheeler Avenue and Bonita Avenue received evacuation orders. Grace Miller Elementary School and Bonita High School sheltered students and staff in place, while the University of La Verne canceled classes and instructed students, faculty and staff to leave campus. Nearby shopping centers also evacuated as firefighters worked to control the hazardous fire.

For people who live and work in La Verne, San Dimas and neighboring eastern Los Angeles County communities, this incident raises questions that extend beyond the flames themselves.

Lithium-ion battery fires can produce hazardous gases, require prolonged emergency responses and potentially expose nearby homes, businesses and schools to smoke and other contaminants. Investigators will also need to determine why the battery energy storage system caught fire and whether equipment failure, inadequate maintenance, a manufacturing defect or some other preventable condition contributed to the incident.

A La Verne fire attorney evaluating potential claims will need to follow that investigation closely.

Lithium-Ion Battery Fire Breaks Out at La Verne Water Facility

Firefighters received reports of the fire at approximately 11:40 a.m. Tuesday at the Metropolitan Water District property on Wheeler Avenue.

Crews from the La Verne Fire Department and Los Angeles County Fire Department responded. Officials classified the incident as a hazardous-materials emergency because lithium-ion battery fires present risks that differ substantially from conventional structure fires.

La Verne Fire Department Battalion Chief Mark Savage told City News Service that firefighters encountered a small explosion in the battery unit after arriving at the scene. Because of the nature of the burning batteries, crews largely focused water on the surrounding area to prevent the fire from spreading.

By mid-afternoon, fire activity had diminished significantly, although officials said a hazard remained at the scene. One civilian was transported to a hospital, according to City News Service reporting. The nature and severity of that person’s injuries were not immediately disclosed.

The Metropolitan Water District said the fire occurred in a battery energy storage system located near the facility’s solar panels and emphasized that the incident did not affect the safety of Metropolitan’s water supply.

Evacuations Affect Wheeler Avenue, Bonita Avenue and Nearby Neighborhoods

The location of the fire made the incident particularly concerning for La Verne residents.

The Metropolitan Water District property sits near residential neighborhoods, schools, shopping centers and major local streets.

Authorities issued mandatory evacuation orders around Wheeler and Bonita avenues, including evacuation zones LVN-E009, LVN-E010, LVN-E011 and LVN-E012. Residents east of Wheeler Avenue were instructed to remain indoors and close their windows and doors.

Earlier evacuation activity also affected residents north of the facility around Moreno Avenue, including residents of a nearby senior mobile home community.

Police evacuated shopping centers along Wheeler Avenue north of Foothill Boulevard as a precaution. Portions of nearby roads also closed while firefighters and hazardous-materials crews worked at the scene.

For La Verne residents, those disruptions can produce losses even when fire never reaches a home.

Evacuation expenses, temporary lodging, lost work, business closures and contamination concerns can all become relevant when determining the full impact of an industrial or battery fire.

Grace Miller Elementary and Bonita High School Shelter in Place

The fire also created an immediate concern for families with children attending nearby schools.

Grace Miller Elementary School, located just east of the Metropolitan Water District property, went into shelter-in-place status. Bonita High School also instructed students and employees to remain inside. Officials advised people in affected areas to keep doors, windows and ventilation systems closed.

The precautions reflected concerns about smoke and gases generated by burning lithium-ion batteries.

The University of La Verne took the additional step of canceling classes until further notice and directing students, faculty and staff to leave campus.

For La Verne families, the proximity of a hazardous battery fire to schools may become an important part of the investigation, particularly if air monitoring identifies hazardous substances outside the facility.

Why Lithium-Ion Battery Fires Create Different Hazards

Lithium-ion battery fires differ from many ordinary building fires because damaged battery cells can enter a process known as thermal runaway.

During thermal runaway, heat inside a battery triggers a self-sustaining chemical reaction. That reaction can spread from one cell to surrounding batteries and continue even after the original ignition source disappears.

Large battery installations can therefore continue burning or reignite over extended periods.

The Los Angeles Times reported that lithium-ion battery fires can release gases including hydrogen fluoride, hydrogen chloride, carbon monoxide and carbon dioxide during thermal runaway.

La Verne fire officials specifically warned against breathing smoke and gases coming from the batteries while crews assessed the hazard.

Those characteristics make environmental testing and air-quality monitoring particularly important following a large battery storage fire.

Residents who notice persistent smoke residue, unusual odors or visible contamination on their property should document those conditions and follow instructions from public-health and emergency agencies concerning cleanup and exposure.

What Caused the La Verne Battery Fire?

As of Tuesday evening, authorities had not announced the cause of the fire.

That means residents should not assume that the Metropolitan Water District, a battery manufacturer, an electrical contractor or any other party bears legal responsibility merely because the fire occurred at the facility.

The investigation will need to determine what happened inside the battery energy storage system before the fire and reported explosion.

•       The batteries and individual battery cells;
•       Battery management systems;
•       Charging and electrical equipment;
•       Cooling and temperature-control systems;
•       Fire detection and suppression equipment;
•       Installation records;
•       Inspection and maintenance records;
•       Previous alarms or equipment faults;
•       Electrical work performed at the facility;
•       Manufacturing information and product warnings;
•       Data recorded by the battery energy storage system before the fire.

That evidence could help distinguish among several possible explanations, including an internal battery failure, electrical malfunction, installation problem, maintenance issue, external damage or another cause.

Who Could Be Responsible for a Lithium Battery Storage Fire?

Potential liability depends entirely on what investigators ultimately find.

A battery storage fire can involve several companies or entities that designed, manufactured, installed, owned, operated or maintained different parts of the system.

Depending on the evidence, a legal investigation could examine the conduct of:

•       The battery manufacturer;
•       Battery energy storage system manufacturers or integrators;
•       Electrical equipment manufacturers;
•       Engineering firms;
•       Installation contractors;
•       Electrical contractors;
•       Maintenance companies;
•       Facility owners or operators;
•       Other entities responsible for inspecting or servicing the system.

None of those potential parties should be presumed responsible for the La Verne fire without supporting evidence.

For a La Verne lithium battery fire attorney, one of the first priorities would likely involve preserving records before equipment gets removed, repaired or destroyed.

Electronic logs from battery management and monitoring systems may prove particularly important because they can show temperatures, fault conditions, charging activity and alarms that occurred before the fire.

Metropolitan Water District Ownership Could Create Additional Legal Issues

The location of the fire adds another potential legal consideration.

The Metropolitan Water District of Southern California is a public agency, and the fire occurred on Metropolitan property.

Claims involving California public entities can involve procedural requirements and deadlines that differ from ordinary lawsuits against private companies.

At the same time, investigators may ultimately determine that another company designed, manufactured, installed or maintained the equipment involved.

That means identifying the owner of the property alone does not establish who caused the incident or who may ultimately bear responsibility for particular losses.

Anyone considering a claim connected to the La Verne battery fire should avoid delaying an investigation while waiting for every government agency to issue a final report.

Nearby Homes Could Face Smoke and Contamination Issues

Unlike a wildfire that may physically destroy entire neighborhoods, an industrial lithium-ion battery fire can create less visible damage.

Homes near Wheeler Avenue, Bonita Avenue, Moreno Avenue and surrounding La Verne neighborhoods may need to consider whether smoke or combustion products entered buildings during the incident.

Possible property issues can include:

•       Smoke residue inside homes;
•       Ash or particulate deposits;
•       Contamination of outdoor furniture and play areas;
•       HVAC contamination;
•       Damage to landscaping;
•       Odors that remain after the visible smoke clears;
•       Professional cleaning or testing expenses.

The existence of an evacuation or shelter-in-place order does not, by itself, prove that a particular home suffered hazardous contamination.

Testing and other evidence may become necessary to establish whether contaminants reached an individual property and whether remediation is required.

La Verne Businesses May Have Interruption Losses

Businesses surrounding the Wheeler Avenue and Foothill Boulevard area also experienced disruption.

Police evacuated nearby shopping centers, roads were affected and customers and employees had limited access to portions of the area while emergency crews responded.

Even businesses that sustained no physical fire damage could potentially experience:

•       Lost sales;
•       Employee downtime;
•       Spoiled goods;
•       Canceled appointments;
•       Temporary closure expenses;
•       Smoke-cleaning costs;
•       Other business interruption losses.

Whether insurance covers those losses will depend on the policy language and circumstances.

Businesses should retain records showing their normal revenue, sales lost during the incident, employee expenses and any costs associated with cleanup or closure.

Residents Should Preserve Evidence From the La Verne Fire

People who live near the Metropolitan Water District facility may possess evidence that becomes important later.

Residents should preserve original photographs and videos showing:

•       Smoke coming from the facility;
•       Flames or explosions;
•       The direction the smoke traveled;
•       Ash or residue on property;
•       Emergency notifications;
•       Evacuation conditions;
•       Property conditions before and after the incident.

Original photo and video files can contain timestamps and location data that may disappear when content is copied or uploaded to social media.

Residents should also preserve evacuation alerts, hotel and food receipts, medical records, cleanup estimates and correspondence with insurance companies.

Those records can help establish both what occurred and how the incident affected a particular household.

Insurance Claims After the La Verne Lithium Battery Fire

Homeowners, renters and businesses do not necessarily need to wait for investigators to identify the fire’s cause before contacting their insurers.

Depending on the policy and the type of loss, coverage may potentially apply to smoke damage, contamination, cleanup expenses, temporary relocation, damaged personal property or business interruption.

Policyholders should obtain a complete copy of their insurance policy and document the condition of their property before major cleanup whenever safely possible.

Insurance claims and potential lawsuits against responsible third parties involve separate legal questions.

An insurer may cover certain immediate losses even while investigators continue trying to determine what caused the battery system to ignite.

La Verne Fire Attorneys Monitoring the Battery Fire Investigation

The September 22 fire was a significant hazardous-materials incident in the heart of La Verne.

It forced residents near Wheeler and Bonita avenues to evacuate, affected a senior community, disrupted nearby businesses, placed local schools under shelter-in-place orders and caused the University of La Verne to cancel classes. One civilian was transported to a hospital.

Most importantly for any future litigation, investigators have not yet publicly determined why the lithium-ion battery energy storage system caught fire.

La Verne fire attorneys will continue monitoring the investigation, including any findings concerning the battery system, electrical equipment, maintenance practices, fire-suppression systems and companies involved in designing, installing or servicing the equipment.

Residents should not assume that any particular party bears responsibility before the evidence establishes what happened.

But anyone who suffered physical injury, contamination, property damage, evacuation costs or significant business losses should preserve evidence now and document those losses carefully.

If your La Verne home, business or property was affected by the lithium-ion battery fire near Wheeler Avenue, call Fire Litigation at 866-312-5353 to discuss your situation and learn about your potential options.