The Hawaiʻi Department of Health is investigating two confirmed cases of Legionnaires’ disease among travelers who stayed at Nihi Kai Villas, a condominium property on Kauaʻi, Hawaiʻi. Testing detected Legionella bacteria in the property’s water systems, raising concerns about a potential ongoing exposure risk for guests and residents.
In a November 4, 2026, announcement, health officials said they are investigating the source of the infections and looking for additional cases among people who stayed at Nihi Kai Villas as far back as January 2025.
Pritzker Hageman’s national Legionnaires’ disease lawyers have represented travelers who developed serious infections after staying at Hawaiʻi resorts, including guests involved in the Hilton Grand Islander Legionnaires’ disease outbreak in Waikīkī.
Were You Diagnosed with Legionnaires’ Disease?
What We Know About the Nihi Kai Villas Legionnaires’ Disease Investigation
According to the Hawaiʻi Department of Health:
- Confirmed cases: Two visitors from outside Hawaiʻi were diagnosed with Legionnaires’ disease after staying at Nihi Kai Villas.
- Location: Nihi Kai Villas, a multibuilding condominium property on Kauaʻi, Hawaiʻi.
- Positive Legionella testing: Water testing results received on October 13, 2026, detected Legionella bacteria in the property’s water systems.
- Potential exposure risk: Health officials say the findings indicate a potential ongoing risk to guests and residents.
- Source investigation: The exact source of exposure and extent of potential spread have not been determined.
- Additional cases: Health officials are reviewing possible illnesses involving guests who stayed at the property since January 2025.
- Public health response: The department is working with Nihi Kai Villas to address the potential health risk and has asked health agencies nationwide to report related travel-associated cases.
- Public health response: The department is working with Nihi Kai Villas to address the potential health risk and has asked health agencies nationwide to report related travel-associated cases.
The department has not publicly identified the two patients’ home states, the dates of their stays, or their medical outcomes.
How Health Officials Are Investigating the Nihi Kai Villas Legionnaires’ Disease Outbreak
The investigation is focused on tracing the source of the infections, identifying additional cases, and determining how guests may have been exposed to contaminated water. Health officials are examining patients’ travel histories, dates of illness, and possible exposure to water from showers, faucets, hot tubs, and other sources.
An important part of investigating the source of a Legionnaires’ disease outbreak is comparing patients’ exposure histories with environmental testing results. Investigators examine where Legionella bacteria were found and how the property’s water systems operate. When bacteria are recovered from both patients and water samples, laboratory testing can help determine whether the infections originated from the same source.
Investigators also examine the conditions that allow Legionella to grow in building plumbing. Water temperature, circulation, disinfection, and maintenance practices can all affect bacterial growth. These factors are especially important in Legionnaires’ disease investigations involving lodging properties, where shared water systems may serve multiple guest rooms or condominium units.
The Hawaiʻi Department of Health is also working with public health agencies nationwide to identify additional cases. Legionnaires’ disease symptoms generally develop two to 14 days after exposure, so travelers may become sick after returning home. Comparing the travel dates, illness histories, and potential exposures of additional patients can help investigators identify connections between cases, determine the extent of the outbreak, and narrow down the source of contamination.
How Can Legionella Grow in Condominium Water Systems?
Legionella bacteria occur naturally in freshwater but can multiply to dangerous levels in building plumbing and other water systems. Large condominium properties may have shared pipes, water heaters, storage tanks, and other equipment that distribute water throughout multiple buildings and individual units. These systems can create conditions that allow Legionella bacteria to grow and spread when water temperatures, circulation, and disinfectant levels are not properly controlled.
Several conditions increase the risk of Legionella contamination:
- Improper water temperatures: Water that is not maintained at appropriate temperatures can create conditions that allow bacteria to multiply.
- Stagnant water: Water that sits in pipes, storage tanks, or rarely used fixtures can lose disinfectant protection, allowing bacteria to grow.
- Biofilm and sediment: Buildup inside pipes, water heaters, and other equipment can provide an environment where bacteria grow and become more difficult to eliminate.
- Inadequate maintenance and disinfection: Failure to monitor water quality, maintain equipment, and correct hazardous conditions can allow contamination to develop or persist.
Preventing Legionella growth requires ongoing monitoring and maintenance. An effective Legionella water management program identifies areas where bacteria could grow, establishes controls for water temperature and disinfection, and outlines corrective actions when problems are detected.
Investigations of previous outbreaks have identified water system maintenance deficiencies involving inadequate disinfection, improper water temperatures, and equipment failures. Reviewing maintenance records, water testing results, and corrective actions can help investigators determine whether similar problems contributed to an outbreak.
The Hawaiʻi Department of Health has not publicly identified which water system conditions contributed to the Nihi Kai Villas infections.
What Are the Symptoms of Legionnaires’ Disease After Staying at Nihi Kai Villas?
Legionnaires’ disease is a serious form of pneumonia caused by inhaling tiny water droplets contaminated with Legionella bacteria. Symptoms typically develop two to 14 days after exposure, meaning someone who stayed at Nihi Kai Villas may not become sick until after returning home.
Common symptoms of Legionnaires’ disease include:
- Cough
- Shortness of breath or difficulty breathing
- Fever and chills
- Headache and muscle aches
- Fatigue and weakness
- Nausea, diarrhea, or confusion
People age 50 and older, current or former smokers, and those with chronic lung disease or weakened immune systems face a higher risk of developing Legionnaires’ disease. The infection can cause severe pneumonia, respiratory failure, and other complications requiring hospitalization or intensive care. In some cases, it can be fatal.
Why Is Testing for Legionnaires’ Disease Important?
Legionnaires’ disease can be difficult to recognize because its symptoms resemble those of other types of pneumonia. A chest X-ray can identify pneumonia but cannot determine whether Legionella bacteria caused the infection. Doctors must order specific laboratory tests, including a urine antigen test or testing of respiratory samples, to identify the bacteria.
If a family member developed pneumonia after staying at Nihi Kai Villas, make sure their healthcare providers know about the stay and the ongoing investigation. Early diagnosis and appropriate treatment are important, particularly for patients with severe infections.
Families can also help document a possible exposure by preserving lodging reservations, travel dates, medical records, laboratory results, and communications from the property or health officials. Taking these steps after a Legionnaires’ disease diagnosis can help investigators establish when and where an infection occurred and preserve evidence that may be important to a legal claim.
Can You File a Legionnaires’ Disease Lawsuit After Staying at Nihi Kai Villas?
Yes. A person who developed Legionnaires’ disease after staying at Nihi Kai Villas may be able to file a lawsuit if evidence connects the infection to contaminated water at the property and establishes that negligence contributed to the illness.
A Legionnaires’ disease lawsuit involving a hotel or lodging property requires investigating where the infection occurred and whether those responsible for the water system took reasonable precautions to prevent contamination.
At a condominium property like Nihi Kai Villas, responsibility for water system maintenance may be shared among property owners, management companies, condominium associations, and maintenance contractors. Identifying who controlled the affected water systems and whether maintenance failures contributed to the contamination is central to establishing legal responsibility.
How Do Legionnaires’ Disease Lawyers Investigate Contaminated Water Systems?
Pritzker Hageman’s Legionnaires’ disease attorneys investigate both the source of infection and the building maintenance practices that may have allowed Legionella bacteria to grow and spread. This involves examining public health findings, medical records, environmental testing, and evidence showing how the property’s water systems were operated and maintained.
Important evidence in a Legionnaires’ disease investigation includes:
- Water testing results: Where Legionella bacteria were detected, when samples were collected, and whether laboratory findings connect the bacteria in the water system to patients’ infections.
- Medical records and exposure histories: Laboratory-confirmed diagnoses, dates of illness, travel records, and potential exposure to showers, hot tubs, or other contaminated water sources.
- Water management records: Documentation of water temperature monitoring, disinfection, routine testing, and corrective actions taken to control bacterial growth.
- Maintenance and inspection records: Evidence of plumbing problems, equipment failures, previous positive tests, safety concerns, and how those issues were addressed.
- Property ownership and management records: Contracts and other documents identifying who was responsible for operating, inspecting, and maintaining the water systems.
An important part of determining legal responsibility for a Legionnaires’ disease outbreak is establishing what the people or companies responsible for the water system knew about potential hazards and what steps they took to address them.
Attorneys may also work with environmental engineers and other specialists to evaluate whether inadequate maintenance, water treatment, or other preventable conditions contributed to the contamination. When clinical and environmental bacterial samples are available, laboratory comparisons can provide additional evidence connecting an infection to a specific water source.
What Compensation Can Families Recover After a Legionnaires’ Disease Infection?
A serious Legionnaires’ disease infection can result in lengthy hospitalization, intensive care, lost income, and ongoing medical needs. When an infection is caused by negligence, a lawsuit may provide compensation for the financial and personal losses associated with the illness.
Depending on the circumstances, compensation in a Legionnaires’ disease lawsuit may include:
- Medical expenses, including emergency treatment, hospitalization, and intensive care
- Lost wages and reduced future earning capacity
- Rehabilitation and ongoing medical treatment
- Pain, suffering, and the physical effects of serious illness
- Long-term health complications and related care needs
When a person dies from Legionnaires’ disease caused by negligence, surviving family members may be able to pursue a wrongful death lawsuit. Depending on the applicable law, compensation may address funeral expenses, lost financial support, loss of companionship, and other damages resulting from the death.
How Can Our Lawyers Help You?
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Contact Pritzker Hageman About a Nihi Kai Villas Legionnaires’ Disease Case
Pritzker Hageman’s national Legionnaires’ disease lawyers represent people who have suffered serious infections caused by contaminated building water systems. Our attorneys investigate the source of exposure, identify potentially responsible parties, and pursue compensation for medical expenses, lost income, pain and suffering, and other losses.
Our firm has represented travelers who developed Legionnaires’ disease after staying at hotels in Hawaiʻi, including guests sickened during the Hilton Grand Islander outbreak in Waikīkī. These cases involve investigating hotel water systems, examining laboratory evidence, and establishing legal responsibility when patients become ill after returning home.
If you or a family member developed Legionnaires’ disease after staying at Nihi Kai Villas on Kauaʻi, our attorneys can investigate the circumstances of the infection and explain your legal options.
Call 1-888-377-8900, text 612-261-0856, or contact Pritzker Hageman online for a free, confidential consultation.
Nihi Kai Villas Legionnaires’ Disease Investigation FAQs
The Hawaiʻi Department of Health is investigating two confirmed Legionnaires’ disease cases involving travelers who stayed at Nihi Kai Villas on Kauaʻi. Water testing also detected Legionella bacteria in the property’s water systems. Health officials are investigating the infections and looking for additional cases.
Water testing detected Legionella bacteria in the Nihi Kai Villas water systems. The Hawaiʻi Department of Health received the positive results on October 13, 2026, and identified a potential ongoing exposure risk for guests and residents. Officials are working with the property to address the risk.
The Hawaiʻi Department of Health is investigating possible illnesses involving guests who stayed at Nihi Kai Villas as far back as January 2025. Officials are asking people who became ill within two weeks of their stay to report their illnesses to help identify additional cases.
Investigators are reviewing travelers’ exposure histories, conducting environmental testing, and coordinating with public health agencies nationwide to identify additional cases. The investigation aims to determine how the infections occurred, identify potential sources of exposure, and address the risk to guests and residents.
If you develop fever, cough, shortness of breath, or other Legionnaires’ disease symptoms after staying at Nihi Kai Villas, seek medical care and tell your doctor about your travel history. Symptoms typically appear two to 14 days after exposure. You can also report your illness to the Hawaiʻi Department of Health at 808-586-4586.
The deadline to file a Legionnaires’ disease lawsuit varies by state and circumstances of your case. You do not need to wait for a public health investigation to conclude before taking legal action. Contact an experienced Legionnaires’ disease attorney promptly to protect your right to seek compensation.
We have obtained 100+ separate verdicts and settlements greater than $1 million:
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We obtained this settlement on behalf of six people impacted by a Legionnaires’ disease outbreak linked to a hotel hot tub.
Our client contracted Legionnaires’ disease at a hotel and was hospitalized for eight weeks.
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Our client contracted Legionnaires’ disease at a hotel and was hospitalized for over a month.
On behalf of a women hospitalized for over two months from a contaminated hotel hot tub in Myrtle Beach.
We obtained this settlement for a woman sickened with Legionnaires’ disease after being exposed in a hotel hot tub.
We obtained this settlement for the family of a 52-year old man who died of Legionnaires’ disease linked to a hotel.
We collected this on behalf of a client who contracted Legionnaires’ disease from contaminated water at a hotel.
We recovered this settlement for the family of a 50-year old man who died of Legionnaires’ disease after being exposed to legionella bacteria at a hotel.
Collected on behalf of the family of a man who died as a result of Legionnaires’ Disease contracted while staying at a Wisconsin resort.
We obtained this on behalf of a man hospitalized after Legionella bacteria exposure at a hotel.
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