You can file a Legionnaires’ disease lawsuit if you can link your infection to a specific building or facility and show that whoever was responsible for its water system was negligent. These are negligence claims, usually brought against hotels, hospitals, employers, landlords, or the contractors who maintain cooling towers and plumbing. Reported settlements and verdicts have ranged from roughly $225,000 to more than $6 million, and most cases settle privately for amounts that are never disclosed.1The CLM. Legionnaires’ Disease and Premises Liability
What You Have to Prove
A Legionnaires’ claim rests on four elements: that you were exposed to Legionella bacteria, that the exposure occurred at the defendant’s property, that the defendant was negligent in maintaining the water system, and that the negligence caused your illness.1The CLM. Legionnaires’ Disease and Premises Liability Courts have generally rejected strict liability in these cases. Simply proving the bacteria was present is not enough. You have to show the owner or operator did something wrong, or failed to do something reasonable.
The usual legal theories are premises liability and general negligence. Common allegations include failing to implement a water management plan, letting chlorine or biocide levels drop, allowing water to stagnate in unused pipes, or keeping hot water storage temperatures too low to suppress bacterial growth.2Goldberg Segalla. Legionnaires’ Disease In places with cooling tower regulations on the books, a documented regulatory violation can also support a negligence per se claim, meaning the violation itself is treated as evidence of negligence.
Who Can Be Sued
The list of possible defendants is long, because responsibility for a building’s water system is often shared. Lawsuits have named hotel and resort owners, hospital and nursing home operators, apartment landlords, HVAC and water treatment contractors, property managers, government agencies, and architects and general contractors involved in designing or building water systems.3The Legionnaires Lawyer. Legionnaires’ Disease Determining Liability What ties them together is a role in maintaining or operating the water system where the bacteria grew.
Hotels are frequent targets. Investigations or lawsuits have involved Caesars Palace in Las Vegas, a Holiday Inn Express in Topeka, Kansas, the Mountain View Grand Resort in New Hampshire, and other properties.4Pritzker Hageman. Can I Sue a Hotel for Legionnaires’ Disease5NBC News. Construction Companies Blamed Outbreak Legionnaires6CBS News New York. Harlem Legionnaires Disease Outbreak Lawsuits Later filings in that outbreak targeted the City of New York itself, naming NYC Health + Hospitals Corp., the NYC Public Health Laboratory, and the New York City Economic Development Corporation.7PR Newswire. First Lawsuit Filed Against the City of New York in Harlem Legionnaires Disease Outbreak
What a Case Is Worth
Published outcomes span a wide range, and confidential settlements make the true middle hard to pin down. Some notable results:
- $4.5 million (2010): A Calhoun County, Alabama, jury awarded a combined $3 million in compensatory damages and $1.5 million in punitive damages to the estate of Rodney Handley and to Emanuel Howard in Handley & Howard v. DEVI, LLC.
- $3 million: A Las Vegas hotel settled a wrongful death claim after a woman contracted the disease from a suite Jacuzzi.
- $2.3 million (2014): A federal jury awarded the widow of Dr. Luis Acevedo Muro nearly $2.3 million in a wrongful death case against Marriott International.
- $490,000 (2010): Bennington County Superior Court awarded this sum in Stevens v. Cortina Inn, including $450,000 for pain, suffering, and loss of enjoyment of life.
- $6.4 million (2020): Illinois paid nearly $6.4 million to settle claims by a dozen families of Quincy Veterans Home residents who died in outbreaks traced to the facility’s water system, with individual payouts ranging from $75,000 to $775,000.8NPR. Illinois Settles Quincy Veterans Home Legionnaires Lawsuits
Recoveries generally track the severity of the illness, whether the victim survived, medical costs, lost income, age and earning capacity, and the defendant’s insurance. Successful plaintiffs can pursue economic damages (hospital and ICU bills, medication, rehabilitation, lost wages and future earning capacity) and non-economic damages (physical pain, emotional trauma, disability, loss of enjoyment of life).9Legionnaires Lawyers. Legionnaires Disease Compensation Wrongful death claims add funeral expenses, loss of companionship, and the financial support the deceased would have provided. Punitive damages are available in some jurisdictions when a defendant’s conduct was reckless, such as ignoring positive Legionella test results.
How Long You Have to File
The deadline varies by state but is typically around two years. Many states apply the discovery rule, meaning the clock starts when you were diagnosed or when you reasonably could have connected your illness to a source, rather than the moment of exposure.10Legionnaires Lawyers. How Long Do I Have to File a Claim After Exposure Wrongful death claims generally must be filed within two years of the death. Deadlines are often shorter when the defendant is a government entity, and shorter still if a formal notice of claim is required first. Exceptions may apply for minors and for cases involving concealment of evidence. Once the deadline passes, the right to sue is usually lost for good.
How Proof Actually Works
These cases are harder to prove than typical personal injury claims because you are trying to tie an invisible, naturally occurring bacterium to a specific building and then show its owner should have prevented the exposure.
Identifying the source. Legionella lives in most natural water and routinely enters buildings through municipal supplies, so its presence alone proves nothing. The strongest evidence is molecular DNA subtyping that matches the strain from your specimen to a strain found in a water sample from the defendant’s property. Matches are rare. One study of more than 1,400 source investigations found a clinical-to-environmental match in only about 2.3% of cases, in part because many patients are diagnosed with urine antigen tests that don’t produce the isolate needed for genetic comparison, and many state labs lack sequencing capacity.11National Library of Medicine. Legionella Environmental Assessment
The incubation window. Symptoms appear two to 14 days after exposure, averaging around 10 days. Attorneys reconstruct where you were during that window using cell phone records, receipts, and travel logs. If you are part of a recognized outbreak cluster (two or more confirmed cases linked by time and place), your individual case gets significantly stronger, because the cluster reduces the chance of coincidence and points at systemic problems in one location.12Pritzker Hageman. The Five Steps We Take to Prove Your Legionnaires Disease Case
Establishing negligence. There is no federal statute requiring Legionella control outside healthcare settings, so plaintiffs often have to define what reasonable care required through expert testimony. Voluntary industry guidelines from ASHRAE, the CDC, and OSHA are just that — advisory — and courts have repeatedly held they do not establish a binding legal standard of care.13Baker Donelson. A Landmark Legionella Lawsuit Defense attorneys often argue that because the infectious dose of Legionella is unknown, plaintiffs can’t show any particular concentration was dangerous or that any specific maintenance step would have prevented the infection.
How Local Regulations Affect Your Case
Where you were exposed can shape your case as much as what happened. Medicare-certified hospitals and long-term care facilities are required by the Centers for Medicare & Medicaid Services to have water management policies, and the Veterans Health Administration mandates prevention practices at its facilities.14Environmental Law Institute. Legionella Management Building Outside healthcare, federal regulation is thin. The Safe Drinking Water Act does not effectively reach Legionella growth inside building plumbing, because a water utility’s responsibility generally ends at the property line.15National Library of Medicine. Legionella Control and Prevention
State and city rules fill some of the gap. New York City’s Local Law 77, enacted in 2015 after a South Bronx outbreak that killed at least 16 people, requires cooling tower registration, inspection, testing, and maintenance.16NYC Department of Health. Cooling Towers After the 2025 Harlem outbreak, the City Council passed Local Law 159 of 2025, increasing required Legionella testing frequency for cooling towers from every 90 days to every 30 days during operation; that law takes effect in May 2026.17Intro NYC. Local Law 159 of 2025 Michigan, Ohio, and New Jersey also have specific requirements.14Environmental Law Institute. Legionella Management Building
Where specific rules exist, a documented violation can go into your case as direct evidence of negligence. In New York, for example, failing to register a cooling tower, maintain a management plan, or perform required testing is classified as a nuisance, with each day of noncompliance treated as a separate violation.15National Library of Medicine. Legionella Control and Prevention Where no specific rule applies, you’ll be relying on experts and voluntary guidelines to define what a reasonable owner should have done, which is a harder case to make.
Individual Suit or Class Action
Most Legionnaires’ cases are filed individually. Illness severity, the specifics of exposure, and the resulting damages vary too much from person to person for one-size-fits-all treatment, and individual suits let each plaintiff seek compensation tailored to their own injuries.
Class actions do happen after large outbreaks. A $100 million class action was filed in 2016 on behalf of people affected by the Flint, Michigan outbreak.18Schmidt Firm. Legionnaires Disease Class Action19CBC News. Legionnaires Another Death Proposed Class Action20Mondaq. Contaminated Cooling Towers Cause Multiple Outbreaks of Legionnaires Disease in London Ontario Victims with the most serious injuries sometimes opt out of a class to pursue their own case for a potentially larger recovery.