Hidden Risks of PFAS Contaminants in Drinking Water
- Published:
- Updated: January 2, 2025
Summary
PFAS contaminants, found in various industrial and consumer products, pose significant risks when they contaminate drinking water sources. These persistent chemicals can enter water supplies through runoff, leaching, and product use, challenging traditional water treatment methods.
Exposure to PFAS can lead to liver and kidney damage, developmental and reproductive problems, and increased cancer risks. Testing for PFAS in drinking water requires specialized methods, and there’s no federal standard, highlighting the need for regulatory action.
PFAS (Per- and polyfluoroalkyl substances) are synthetic chemicals used extensively in many industries as oil and water repellents. Because PFAS are persistent and not biodegradable, they are often used without thinking about their environmental and health impacts. Among the worst is PFAS contamination of drinking water sources with disastrous public health implications.
Introduction to PFAS Contaminants
PFAS are more than 4,500 synthetic chemicals, used in industrial and consumer products like non-stick cookware, food packaging, stains-resistant textiles and fire retardant foam. These chemicals are very heat, water, and oil resistant, which is a great combination for use in many different industries. Since PFAS are continuing to remain in the environment, it is possible that they could enter drinking water.
PFAS persist in the environment and can accumulate in the body over time, so very mild exposure to PFAS can lead to accumulating PFAS in the body. This is a worry because of the health risks that come from using these chemicals. PFAS are extremely permeable in nature, they can pollute groundwater and surface water, and they’re difficult to get out of the water system.
How PFAS Enter Our Drinking Water
PFAS can get into drinking water via a number of different routes: from industrial facilities, landfills, and treatment plants. They also leak into groundwater from PFAS-contaminated sites (fire fighting foam in military installations, airports, etc). Some PFAS also find its way into drinking water from home use of PFAS-enhanced products (including non-stick cooking pots and fabric stain resisting).
The problem with PFAS contamination of water is that the chemicals are not easily flushed away by standard water treatment. This means that PFAS, once in the drinking water, can be difficult to clean up, and they can be in the water for a long time.
The Dangers of PFAS in Drinking Water
PFAS in water supply is concerning due to the health hazards associated with a toxic load. PFAS are notoriously very persistent in the environment and can become stuck in the human body. That’s because exposure to PFAS, even at very low doses, can cause the accumulation of these chemicals in the body, which can have severe health effects.
A number of studies have associated PFAS with a host of health effects, such as liver and thyroid diseases, developmental and reproductive problems, and predispositions to cancers. Not fully elucidated yet is how PFAS contributes to these health issues, but PFAS is thought to affect the body’s hormone system, which can be a cause of all these ailments.
Health Risks Associated with PFAS Exposure
Consuming PFAS-contaminated water can have serious consequences for public health. Some of the potential health risks associated with PFAS exposure include:
- Liver and kidney damage: PFAS exposure has been linked to liver and kidney damage in animal studies. Some studies have found that PFAS exposure can result in decreased liver function and increased levels of liver enzymes, which can be indicative of liver damage.
- Developmental and reproductive problems: PFAS exposure has been linked to developmental problems in animals, including reduced birth weight, delayed puberty, and reduced sperm counts. In humans, some studies have found a link between PFAS exposure and decreased fertility and increased risk of miscarriage.
- Increased risk of certain cancers: Some studies have found a link between PFAS exposure and an increased risk of certain cancers, including testicular and kidney cancer. Some studies have found that PFAS exposure can increase the risk of certain types of lymphoma and prostate cancer.
- Interference with hormones: PFAS can interfere with the body’s hormone system, leading to a range of health problems, including decreased fertility and increased risk of certain cancers. PFAS can bind to hormone receptors in the body, leading to hormonal imbalances and other health problems.
Testing for PFAS in Drinking Water
To determine if PFAS are present in drinking water, it is necessary to test the water using specialized methods. There are several methods available for testing PFAS in drinking water, including liquid chromatography-mass spectrometry (LC-MS) and inductively coupled plasma mass spectrometry (ICP-MS). The recommended levels of PFAS in drinking water are still being determined, but some experts have recommended a limit of 1 part per trillion (ppt) for some PFAS compounds.
It is important to note that not all PFAS compounds are regulated, and there is currently no federal standard for PFAS in drinking water. This means that even if a drinking water source does not exceed the recommended levels for one type of PFAS, it may still contain other PFAS compounds that are not regulated.
Reducing PFAS Contamination in Drinking Water
There are several steps that can be taken to reduce the levels of PFAS in drinking water, including:
- Reducing the use of PFAS-containing products in the home and industry: This can be done by using alternative products that do not contain PFAS or by using PFAS-free versions of products that typically contain PFAS.
- Implementing best practices for wastewater treatment and disposal: This can include improving wastewater treatment processes to remove PFAS, as well as properly disposing of PFAS-containing waste to prevent contamination of drinking water sources.
- Monitoring and enforcing regulations: Governments and regulatory agencies can play a role in reducing PFAS contamination by monitoring levels of PFAS in drinking water and enforcing regulations to prevent contamination.
Importance of Awareness and Education
Public education and education about the hazards of PFAS in water are crucial to public health. If people know where PFAS come from and what exposure to them can or won’t harm them, they can work to reduce exposure to PFAS chemicals. This can be based on having the facts in their own hands, championing regulation and policy to avoid PFAS contamination, and pushing for tougher regulations and policies at the local, state and federal level.
Let communities know to test their water for PFAS and to act to minimize PFAS contamination in their water sources. This can range from local efforts to track and control PFAS in drinking water to pushing for more strict regulations and policies that safeguard public health.
The Future of PFAS Regulation and Containment
How PFAS will be regulated and contained in the future will depend on how governments, regulators and consumers act to minimize PFAS risks in water supply. It could include: phasing out PFAS-laden products, best practices for wastewater treatment and disposal, monitoring and enforcement, and advocating for stronger regulations and policies locally, state-wide, and nationally.
Innovation of new technologies and processes for purifying PFAS from water will help mitigate PFAS risks in the future. This could mean new water treatment technologies that remove PFAS from water for use, and novel PFAS-free products and replacements for existing PFAS-based products in homes and industries.
Advocating for Stronger Regulations and Policies
We should push for stronger regulations and policies in order to ensure that public health is protected from PFAS in drinking water. It can be done by publicly educating people about the risks of PFAS in water, by funding organizations working to regulate them, and by calling for stricter regulations and policies at the local, state, and federal level.
Public health risk posed by PFAS contaminants in water is a major hidden issue. While some states have already moved to control PFAS in water supplies, more federal controls are still needed to safeguard communities nationwide. You can avoid PFAS from being in your water by reducing the consumption of PFAS-containing products, adopt best practices for wastewater treatment and disposal, and watch and enforce regulations. Demanding stronger laws and policies is important to keep public health safe from the risks of PFAS in water. It is now on each of us to take steps to mitigate PFAS risks and maintain the health of our communities.
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