Cell Tower Radiation: Liability, Risk, and Industry Disclosures:

Major insurers rank radiofrequency (RF) radiation emitted by cell towers as a “high-risk” liability, often comparing the issue to asbestos or lead. The Swiss Re Institute, a leading authority in reinsurance, has categorized 5G as an “off-the-leash” risk—a designation for unpredictable threats with potentially widespread impact. RF radiation is a type of non-ionizing electromagnetic field (EMF) and a substantial body of evidence has reported harmful effects from exposure.

Due to the financial risk, most insurance policies exclude coverage and damages related to non-ionizing EMF, including RF radiation emitted from cell towers. In turn, U.S. wireless carriers have been unable to secure insurance coverage for potential liabilities for well over a decade.

Telecom companies reassure communities that cell towers are “safe,” yet they warn their shareholders of cell tower radiation-related risks in their annual reports, stating that regulations could change or legal cases could result in unfavorable rulings – which could impact their cash flow.

Further, many wireless companies sell cell phone “protection plans” that explicitly classify RF radiation—the very emissions created when cell towers connect to phones—as a form of pollution. These policies clearly state that the company will not insure any damages related to this type of pollution, even as the same companies publicly promote the narrative that wireless radiation is completely safe.

These disclosures reveal a clear double standard: companies protect themselves, their shareholders and their devices from RF radiation-related risks, yet they offer no comparable transparency, protection, or honesty to consumers or to the people living near their cell towers.

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T-Mobile’s Ecolog Report Recommended Precaution Two Decades Ago

In 2000, T-Mobile/Deutsche Telekom commissioned a report by the Ecolog Institute which documented the emerging science linking wireless radiation exposure to health impacts including cancer, DNA damage, blood brain barrier permeability, altered stress hormones, and other nervous system impacts.

The Ecolog Report concluded by recommending a precautionary exposure limit 1,000 times lower than the FCC’s current cell tower radiation limits that “should be rigorously adhered to by all base stations near sensitive places such as residential areas, schools, nurseries, playgrounds, hospitals and all other places at which humans are present for longer than 4 hours.”

No action was taken on this recommendation that we are aware of.

Telecommunications Companies Warn Shareholders but Not People Living Near Cell Towers

Telecommunications companies routinely warn shareholders in their annual reports and 10-K filings that lawsuits, evolving science, and regulatory actions related to alleged health risks from RF radiation emissions could result in substantial financial liabilities. Some even disclose that they lack insurance coverage for health-related RF radiation claims. 

“We cannot guarantee that claims relating to radio frequency emissions will not arise in the future or that the results of such studies will not be adverse to us…If a connection between radio frequency emissions and possible negative health effects were established, our operations, costs, or revenues may be materially and adversely affected. We currently do not maintain any significant insurance with respect to these matters.”

-Crown Castle 10-K Report (2024)

“Our wireless business is also subject to lawsuits relating to alleged adverse health effects of wireless phones and radio frequency transmitters. Any of these allegations or changes in government agencies’ assessment of the risks associated with using wireless devices could result in significant legal and regulatory liability and other remedies, and could have a material adverse effect on our business, financial condition and operating results.”

-Verizon 10-K Report (2024)

“In the wireless and wireline area, we also face current and potential litigation relating to alleged adverse health effects on customers or employees who use such technologies including, for example, wireless devices. We may incur significant expenses defending such suits or government charges and may be required to pay amounts or otherwise change our operations in ways that could materially adversely affect our operations or financial results.”

-AT&T 10-K Report (2024)

“We are subject to current and potential future lawsuits alleging adverse health effects arising from the use of wireless handsets or from wireless transmission equipment such as cell towers. In addition, the FCC has from time to time gathered data regarding wireless device emissions, and its assessment of the risks associated with using wireless devices may evolve based on its findings. Any of these allegations or changes in risk assessments could result in customers purchasing fewer devices and wireless services, could result in significant legal and regulatory liability, and could have a material adverse effect on our business, reputation, financial condition, cash flows and operating results.”

– T-MOBILE 10-K Report (2024)

“….Public perception of possible health risks associated with cellular and other wireless communications technology could slow the growth of wireless companies, which could in turn slow our growth. In particular, negative public perception of, and regulations regarding, these perceived health risks, including claims that the deployment of 5G networks is linked to adverse health effects, could undermine the market acceptance of wireless communications services and increase opposition to the development and expansion of tower sites. If a scientific study, court decision, government agency ruling, or misinformation, disinformation or malinformation campaigns resulted in a finding that radio frequency emissions pose health risks to consumers, it could negatively impact our customers and the market for wireless services, which could materially and adversely affect our business, results of operations or financial condition…”

-American Tower Corporation (2024)

“From time to time, media and other reports have highlighted alleged links between radio frequency emissions from wireless devices (including new 5G technology) and various health concerns, including cancer, and interference with various medical devices, including hearing aids and pacemakers. This may discourage the use of wireless devices or expose us to potential litigation even though there are no definitive reports or studies stating that these health issues are directly attributable to radio frequency emissions. Future regulatory actions may result in more restrictive standards on radio frequency emissions from low-powered devices like wireless devices. We cannot predict the nature or extent of any restrictions.”

-Rogers Annual Report (2024)

“Public debate about potential health risks from mobile communications and electromagnetic fields (EMF) may impact the build-out of mobile infrastructure and lead to regulatory intervention, such as stricter limits for electromagnetic fields or the implementation of precautionary measures for mobile communications, e.g., amendments to building laws or the risk of labeling requirements for devices. This could lead to increased operating and capital expenditure.”

-Deutsche Telekom Annual Report (2024)

Electromagnetic Fields (EMF) is listed as a risk on page 65, which has a graphic showing EMF as one of their principal risks along with climate change, Brexit, and the health pandemic. Page 68 states, “EMF: The risk can be broken down into three areas:

  • failure to comply with national legislation or international guidelines (set by the International Commission on Non-Ionizing Radiation Protection (‘ICNIRP’)) as it applies to EMF, or failure to meet policy requirements;
  • the risk arising from concerted campaigns or negative community sentiment towards location or installation of radio base stations, resulting in planning delays; and
  • changes in the radio technology we use or the body of credible scientific evidence which may impact either of the two risks above.”

-Vodaphone’s 2020 Report

Ranked EMF as a “Principal Risk” with “High” Impact “Electro-magnetic signals emitted by mobile devices and base stations may be found to pose health risks, with potential impacts including: changes to national legislation, a reduction in mobile phone usage, or litigation.”

-Vodaphone Report (2017)

Insurance Authority Reports Rank Cell Tower and Wireless Radiation as “High Risk”

Poster image of The Next Asbestos 5 emerging risks

Swiss Re Institute

The Swiss Re SONAR Report is an annual publication that identifies and assesses emerging risks to the global economy and insurance industry based on input from underwriters, client managers, and risk experts. It has issued several reports classifying cell tower radiation as a high risk.

The Swiss Re Institute SONAR 2019 Report calls 5G as an “off-the-leash” risk. It identified the spread of 5G technology as a significant emerging risk, highlighting potential cyber security vulnerabilities, increased espionage risks, and health concerns from electromagnetic fields that could lead to liability claims.

The Swiss Re SONAR 2014 Report has a section on Smart Cities (page 22) which states that “an increasing level of interconnectivity and the growing prevalence of digital steering and feedback systems also give rise to new vulnerabilities. These could involve cascading effects with multiple damages” including concerns that “exposure to electromagnetic fields may also increase.”

The Swiss Re 2013 Report lists three topics as potentially having a high impact: endocrine disrupting chemicals, nanotechnology and electromagnetic fields. The potential impact is rated as “high,” stating:

“The WHO has classified extremely low-frequency magnetic fields and radiofrequency electromagnetic fields, such as radiation emitted by cell phones, as potentially carcinogenic to humans (Class 2B carcinogen). Furthermore, a recent ruling by an Italian court suggested a link between mobile phone radiation and human health impairment. Overall, however, scientific studies are still inconclusive regarding possible adverse health effects of EMF. If a direct link between EMF and human health problems were established, it would open doors for new claims and could ultimately lead to large losses under product liability covers. Liability rates would likely rise.”

Kaiser Permanente Research on Prenatal Magnetic Field Risks

Kaiser Permanente, one of the nation’s largest not-for-profit healthcare systems which integrates health insurance, hospitals and medical centers has published peer-reviewed studies reporting prenatal exposure to non-ionizing electromagnetic fields associated with pregnancy impacts and long-term health risks in children. Research led by Dr. De-Kun Li of Kaiser Permanente found that higher in-utero EMF exposure was associated with miscarriage, increased childhood obesity, and a dose-response increase in asthma risk and ADHD symptoms. Dr. De-Kun Li also participated in studies reporting impacts to embryonic development and decreased fetal growth in girls. At the 2024 International Society of Environmental Epidemiology conference, Dr. De-Kun Li presented new findings showing a 12-fold increase in early-onset colorectal cancer on the same side of the body where individuals
routinely carried cell phones below the waist, suggesting that non-ionizing radiation exposure may be a contributing factor in the rising incidence of this cancer among young adults.

Kaiser Permanente Press Releases

Lloyd’s of London

The Lloyd’s Emerging Risks Team Report Electromagnetic fields from mobile phones: recent developments (2010) reviewed the scientific research and liability trends related to RF radiation, comparing the insurance risk profile of EMF exposure to asbestos. Lloyd’s concluded that the true scale of RF-related liability may be significantly underestimated, warning that:

“The danger with EMF is that, like asbestos, the exposure insurers face is underestimated and could grow exponentially and be with us for many years.”

Business Insurance

“Some research has shown biological effects from lower-level ‘non thermal’ exposure and people exposed at lower levels have reported headaches, dizziness, nausea, mood disorders, mental slowing and memory loss.”

The Next Asbestos: Five Emerging Risks That Could Shift the Liability Landscape” Business Insurance White Paper

“It may take two more decades to know if electromagnetic radiofrequency energy is a significant liability issue for telecommunications companies, so, in the interim, insurers are treating the risk as cautiously as a downed power line after a storm. Insurers often exclude the risk from commercial general liability policies, strictly limit the coverage or avoid policyholders in the wireless industry, brokers say.”

-Roseanne White Geisel, 6/3/2007 Business Insurance

Insurance Companies Do Not Cover Non-ionizing EMF Radiation

Most insurance companies explicitly exclude coverage for injuries, illnesses, or property damage arising from non-ionizing electromagnetic field (EMF) radiation, including RF radiation emissions from cell towers, and electrical infrastructure. Standard commercial general liability policies treat EMF radiation as an uninsurable long-tail liability, similar to asbestos, and therefore exclude it through broad “pollution,” “electromagnetic fields,” or “any form of radiation” exclusions.

The Missouri United School Insurance Council Insurance states “Pollutants includes: 1. Electromagnetic fields;”

“This insurance does not cover any claim… directly or indirectly arising out of, resulting from or contributed to by electromagnetic fields, electromagnetic radiation, electromagnetism, radio waves or noise.”

As another example, a Portland Oregon Public School Insurance policy states,

“Exclusions: This insurance does not apply to: Bodily injury, personal injury, advertising injury, or property damage arising directly or indirectly out of, resulting from, caused or contributed to by electromagnetic radiation, provided that such loss, cost or expense results from or is contributed to by the hazardous properties of electromagnetic radiation.”

Across the industry, EMF is routinely classified as a pollutant, placed in the same category as smoke, chemicals, mold, asbestos, and lead, which means claims involving EMF-related injuries, illnesses, property damage, or mitigation costs are explicitly excluded under most Commercial General Liability (CGL), property, school board liability, and umbrella policies. These exclusions appear in policies from major insurers, public school insurance pools, and municipal risk authorities – each stating in nearly identical language that any bodily injury, property damage, legal liability, cleanup cost, defense cost, or mitigation expense arising from electromagnetic fields or electromagnetic radiation is not covered.

Because standard insurance will not cover EMF/RF harms, organizations that want protection must purchase specialized Pollution Liability or Electromagnetic Fields (Utilities) Liability Insurance, which are sold separately at a premium.

Lawsuit Example: Court Finds Insurance Company Does Not Have to Cover Non-ionizing EMF Due to Broad “Radiation” Exclusion

The Seventh Circuit’s decision in Hammond Power Solutions Inc. v. National Union Fire Insurance Co. (2025) is a key example of how insurance companies routinely exclude coverage for non-ionizing electromagnetic field radiation, treating the exposure as they do other uninsurable long-tail risks. In this case, individuals sued Hammond Power Solutions alleging that electrical transformers placed near their bedrooms emitted non-ionizing EMF radiation that caused a man’s cancer. The court held that the electric company’s commercial general liability (CGL) policy—which excluded coverage for “any form of radiation”—barred coverage for injuries allegedly caused by EMF because “EMF is a form of radiation.” Thus, the insurer had no duty to defend or indemnify the company for the health-related damages.

More at Seventh Circuit Affirms Broad Reading of CGL Policy’s “Radioactive Matter Exclusion” to Include EMF Radiation | Carlton Fields

Electromagnetic Fields Exclusion Statements

“Electromagnetic Fields Exclusion liability for any Injury or Damage or any investigation costs arising out of based upon or attributable to or in any way involving any actual or alleged electromagnetic fields or radiofrequency radiation.”

Allianz Construction

Exclusions for pollutants includes “any substance exhibiting any hazardous characteristics including ”contaminants or smoke, vapor, soot, fumes, acids, alkalis, chemicals or waste materials” and also “waste water, oil or oil products, infectious or medical waste, asbestos or asbestos products, noise, fungus (including mold or mildew and any mycotoxins, spores, scents or byproducts produced or released by fungi) and electric or magnetic or electromagnetic field.”

Chubb Chubb — ACE Municipal Advantage Public Officials Liability

“Exclusions. This insurance does not apply to…Bodily injury, personal injury, advertising injury, or property damage arising directly or indirectly out of, resulting from, caused or contributed to by electromagnetic radiation, provided that such loss, cost or expense results from or is contributed to by the hazardous properties of electromagnetic radiation. This includes any costs for the actual or threatened abatement, mitigation, or removal.”

Genesis Insurance liability coverage for educational Institutions

Wireless Companies Define Wireless as a Pollutant

In the U.S., companies sell product protection insurance to consumers for their cell phones, but most companies will not insure if the device is damaged by “pollution”.

The coverage fine print defines “pollution” as including “artificially produced electric fields, magnetic field, electromagnetic field, sound waves, microwaves, and all artificially produced ionizing or non-ionizing radiation.” This means they define wireless radiation – which are microwaves and a type of non-ionizing radiation- as a pollutant and won’t insure for damages from it.

Here is a list of company plans that define non-ionizing EMF radiation as pollution.

More Briefing and Reports by Insurance Authorities

A.M. Best Company Briefing

“The risks associated with long term use of cell phones, although much studied over the past 10 years, remains unclear. Dangers to the estimated 250,000 workers per year who come in close contact with cell phone antennas, however, are now more clearly established. Thermal effects of the cellular antennas, which act at close range essentially as open microwave ovens can include eye damage, sterility and cognitive impairments. While workers of cellular companies are well trained on the potential dangers, other workers exposed to the antennas are often unaware of the health risks.The continued exponential growth of cellular towers will significantly increase exposure to these workers and others coming into close contact with high-energy cell phone antenna radiation.”

“Emerging Technologies Pose Significant Risks with Possible Long-Tail Losses” February 11, 2013

“The ATHEM 2 project investigated cognitive effects as well as whether and how the RF-EMF changes cells of the human body.”

2016 AUVA ATHEM Report “Investigation of athermal effects of electromagnetic fields in mobile communications”

“The ATHEM project investigates the athermal (heat-independent) biological effects of radiofrequency electromagnetic fields on an interdisciplinary basis.”

2011 AUVA ATHEM Report “Investigation of athermal effects of electromagnetic fields in mobile radio areas”

“The Austrian General Accident Insurance provides a research report on athermal effects of mobile radio radiation and calls for precautionary policies.”

2009 AUVA ATHEM Report “Athermal effects confirmed – Limits questioned – Precaution required”

“The AUVA studies have verified that: Electromagnetic fields from cell phone radiation have an impact on the: Central Nervous System (brain), Immune System, Protein Syntheses.” “The radiation-induced effects observed, however, were not always dosage-dependent as would be expected from thermal effects. Some cells showed an even stronger response when the 5-minute expo- sure was followed by a 10-minute break (intermittent exposure). This would also support a nonthermal effect mechanism. The project results, therefore, serve as a further confirmation of the existence of so-called nonthermal effects.” (p. 169) “One of the observations showed that, among the different cells, those respond particularly strongly, which are metabolically active. This cell property is especially pronounced in growing tissues, that is, in children and youth. Consequently, these population groups would be more susceptible than average to the described effects.”

2009 AUVA ATHEM Report “Nonthermal Effects of Electromagnetic Radiation in the Cell Phone Frequency Range”