Non-polymer PFAS can build up in blood protein of animals, and is not always removed quickly. This means that predators eating PFAS-contaminated food will have higher levels in their bloodstream, and concentrations can increase up the food chain. Studies suggest that build up of PFAS is similar to those of other Persistent Organic Pollutants such as DDT.PFAS are estimated to be settling in arctic regions at rates of tens to hundreds of kilograms per year (25-850kg per year), depending on the specific PFAS chemical in question. Certain PFAS are released as gases to the environment and are blown a long way by wind and air currents in the atmosphere,. These gas PFAS will over time degrade to more persistent chemicals like PFOS and PFOA. This may be one reason why PFAS of environmental concern have been found in remote regions such as the Arctic as well as near PFAS production sitesPFAS including PFOS and PFOA have been found in air samples around Europe. The chemicals are found in small quantities, but appear in almost all samples tested. PFAS enters the atmosphere both from factories and the air inside our homes. https://www.ncbi.nlm.nih.gov/pubmed/17554424 PFAS is found in treated waste water from industrial and domestic sources and has been found in both rivers and groundwater. Conventional drinking water processes will not remove PFAS.PFAS-coated clothes that are thrown away will often end up either incinerated or in landfill. Unless incinerated at very high temperatures (>1000oC), fluorinated polymers could release more harmful PFAS during burning. PFAS of environmental concern have also been found in landfill leachate. Non-polymer PFAS are used in the production of fluorinated polymers. The manufacture of stain-resistant finishes generally releases these PFASs into the environment, both by air and water emissions. They are very hard to remove during water treatment. Workers in textiles factories are some of the population most exposed to these potentially harmful chemicals. Small quantities of PFAS will be removed during wash and wear of products containing PFAS. This includes fluorinated polymers used on stain-resistant coatings, and non-polymers that remain on clothes after production (Lassen et al. 2015).Most UK waste still ends up in landfill, and this includes PFAS-containing products. Studies have shown that the liquid coming from landfills (known as leachate) often contain non-polymer PFAS chemicals. In the USA the total quantities were estimated at 563-638 kg in 2013. To properly break down PFAS chemicals high temperature (1000oC or more) incineration is recommended. Incineration of municipal waste does not necessarily reach these temperatures (min temp. required is 850oC), and the incomplete breakdown could release non-polymer PFAS.Wash and wear of clothing that contains PFAS-based stain-resistant or water repellent finishes release PFAS to the environment. Coatings are thought to lose effectiveness after 20-30 washes. This can include non-polymer PFAS, remnant from production or as a break-down product of side-chain polymers (Lassen et al. 2015). The manufacture of stain-resistant finishes releases PFAS into the environment, both by air and water emissions. PFAS are very hard to remove during water treatment. Industrial emissions are estimated to be the biggest source of these chemicals to the environment.

Philip Sheane

Farmer case study on avoiding sewage sludge, pesticides and forever chemicals

When traces of a pesticide chemical were found in Philip’s own blood, he decided to change his journey as a farmer towards more regenerative practices. This case study explores how and why Philip chose to move away from chemical inputs in farming and highlights recommendations and support needed for other farmers looking to do the same. Philip is a beef farmer who currently manages 100 acres of land in Fife, Scotland.

“While I enjoyed the practice of driving my sprayer through a crop on a beautiful summers day, the act of what I was pumping through the machine and covering the crop and soil with never felt right.”

Philip Sheane's cattle

Philip’s journey to moving away from chemical inputs

Growing up on a small dairy farm in Ireland, Philip learned early on about the challenges of intensive farming. Over time, using chemical inputs to boost production seemed to result in severe consequences for his herd. Fertility issues, calf mortality, and other health problems began to impact livestock, resulting in the heavy use of mineral supplements, and raising serious concerns for Philip about the long-term effects of these methods.

In 2007, seeking a fresh start, Philip sold the family farm and moved to Canada, where he acquired a much larger, 2000-acre arable farm. With more opportunity and economies of scale, Philip wanted to farm more sustainably and reduce his reliance on chemical inputs. However, the scale of his new business operations the sheer size of the farm meant he was purchasing more chemicals than ever before.

“During my years of farming in Canada, the rising issues of crop health were front and foremost even in the relatively short time I was there. Having questioned my farming methods, thinking I was the only farmer with these issues, I quickly found out that it is a common complaint among the farming communities worldwide.”

Philip’s experience highlights the complexities farmers face when scaling up while striving to adopt more sustainable practices. Day after day, Philip would question the air he was inhaling whilst spraying pesticides, conscious of the potential impacts on his health. Then after finding traces of a fungicide he used in his own blood, this was enough to motivate Philip to move away from chemical inputs completely.

In 2021, with a renewed commitment to sustainability, Philip sold his Canadian farm and relocated to Fife, Scotland. Here, he embraced a fully regenerative approach, entirely free of chemical inputs. Once Philip moved away from chemicals, he immediately noticed a benefit in his own health as well as the health of his livestock and the land he managed.

“Put simply, my own health and the health of the land I work with is improving, a phenomenon which I have never experienced before.”

Today, Philip’s farming methods focus on soil health and natural resilience, embodying a philosophy that values long-term ecosystem vitality.

Philip Sheane's farm

How Philip moved away from chemical inputs in farming

Before Philip left his farm in Canada, he started to implement practices that were helping him to eliminate chemicals. For example, he was able to reduce the need for fungicides by using cover crops, natural fertilisers and foliar feeds, and using biological products like compost extracts/teas and other natural renewable sources of crop nutrition.

“Just like humans, if the soil/crops nutritional needs are met fully, the necessity to deal with weeds, disease and predatory insects are greatly reduced.”

Philip learned about these methods from a combination of live seminars/workshops, books, social media, farm tours, networking with other food producers, and experimenting with his own farm trials. For example, in 2019 Philip discovered Dr Elaine Ingham’s foundation course on composts and soil biology. From there, he began experimenting and producing his own compost for his garden, before scaling it up for use across his farm.

Resources recommended by Philip

  • For the Love of Soil by Nicole Masters
  • John Kempf’s work on natural amendments and soil biology
  • Neal Kinsey’s soil fertility testing approach
  • Dr. Elaine Ingham’s courses on composts and soil regeneration

Like many farmers, Philip was unaware that pesticides can contain forever chemicals, and after investigation by Fidra, it was identified at least three of the pesticides Philip previously used contained PFAS. Now free from any chemical inputs, Philip has prevented any further pollution from PFAS pesticides to his soil, crops and the wider environment.

Philip highlights that the lack of transparency in pesticide ingredients and in the food industry can create misinformation and mistrust between consumers and corporations.

“Pesticide labelling, along with much of the labelling in the food industry, has become, in some cases, nothing more than an abuse and distortion of the language, in order to promote marketing for profit. People need to realise that they cannot depend on the integrity of some corporations to provide the information accurately or in full. A little personal research can go a long way to finding the truth.”

Sewage sludge acts as a sink for the cocktail of contaminants found in wastewater, including PFAS, pharmaceuticals and microplastics and these contaminants are virtually impossible to remove. Philip highlights why he doesn’t use sewage sludge on his farm soils and recommends using cleaner natural bioresources such as composts instead as a source of beneficial nutrients and organic matter:

“The compost used on our farm is as far as possible only from natural on-farm sources. Some farmers continue to use sewage because of a lack of knowledge of the long-term effects and possibly price incentives. In a system where margins are extremely small, practices of cost cutting will often result in an inferior product. This should not be the system of food production.”

Philip found that balancing the drive to experiment with new methods while staying profitable was one of the most challenging parts of his journey.

“It took years for me to fully appreciate how I needed to change my own thinking. Having said that, while I had the will to change, the other very large challenge was how to change the farming practices, and still stay profitable.”

Nonetheless, Philip actively encourages other farmers interested in regenerative methods to explore the wealth of resources and support available:

“Today, as opposed to more than a decade ago, there is much more help and advice available now in the form of publications, consultants, farmers speaking out about their successes in regenerative methods. A whole new friendly network of like-minded farmers are connecting in ways that were not possible before, and this is global.”

Support needed for farmers to move towards regenerative methods

Philip acknowledges that transitioning to regenerative farming is a complex journey that goes beyond farmers adopting new practices; it requires systemic changes in how farmers, consumers, and governments interact. Philip highlights how the current system has driven food prices down at the cost of quality.

“This is a massive and complicated subject. Direct payments to farmers for cheap food has resulted in exactly that…cheap food, as in low quality, with very expensive health care issues.”

Additionally, Philip believes that support should be coming from consumers. Consumers could drive demand for healthier, higher quality and sustainably produced foods, which would benefit farm businesses as well as environmental and public health.

“Support might be better brought to farmers in the form of knowledgeable purchasing power from consumers. Bringing the support this way around, will bring benefits to everyone in the circle. Empower the consumer to make food choices based on nutrient density, shorten the supply chain to cut costs, improve quality, and facilitate premiums to farmers for quality not quantity.”

Philip envisions a future where farmers receive encouragement from all sectors to return to diverse, mixed-style farming, rather than the intensive single-crop, factory-like operations that have become common worldwide.

“Farmers need encouragement from all sectors to get back to the mixed style of farming, not the monocropping factory type developed all over the world.”

“Changing farming methods is no easy task. On the other hand, a system that is broken, is an incentive to try changing. Education is key, and it is at our fingertips all day long. Take small steps to investigate what makes good food, and make small changes, one at a time. The important thing to do is to start!”