Banned Forever Chemicals Found in Tap Water in Lille

Tap water is not necessarily good for our health. Several recent news reports have revealed cases of contamination. On 19 September, an investigation carried out by Radio France and France Bleu revealed that tap water in Lille may be problematic for our health.

Indeed, banned and carcinogenic forever chemicals were found. The situation is particularly worrying and shows that alternatives are needed for drinking cleaner water.

PFAS Are Almost Indestructible Pollutants

Per- and polyfluoroalkyl substances (PFAS), known as forever chemicals, are a family of synthetic molecules with unique properties, including exceptional chemical and thermal stability. This resistance to degradation is due to the presence of carbon-fluorine bonds, among the strongest in organic chemistry. PFAS include more than 4,000 compounds, including perfluorooctanoic acid (PFOA) and perfluorooctanesulfonic acid (PFOS).

Widely used since the 1950s in many industrial sectors and everyday products, PFAS are valued for their non-stick, waterproof and heat-resistant properties. They are found in non-stick cookware coatings such as Teflon, food packaging, firefighting foams, waterproof textiles and cosmetics.

The environmental persistence of PFAS and their toxicity raise serious health concerns. Some PFAS, such as PFOA and PFOS, are classified as carcinogenic (category 2), reprotoxic (category 1B) and endocrine disruptors. They are associated with an increased risk of kidney and testicular cancers, fertility and developmental disorders, as well as harmful effects on the thyroid and liver.

A Significant Quantity of PFAS Detected in Lille

An investigation carried out by France Bleu and the Radio France investigative unit, published on Thursday 19 September 2024, revealed the presence of a significant quantity of PFAS in tap water in Lille.

• Of the 25 PFAS tested for, 9 were detected in the sample taken on 8 May 2024.
• Lille is therefore one of the most concerning areas among the 89 samples taken across France between mid-April and early June.
• Among the PFAS identified, PFOA is considered carcinogenic by the International Agency for Research on Cancer (IARC).
• PFOS is classified as potentially carcinogenic.

In addition, PFHxS, another PFAS detected, is now banned because of its toxicity to the thyroid and fertility.

Where Does This Contamination Come From?

Although the levels recorded were below the French regulatory limits, set at 0.1 µg per litre of distributed water, the European Metropolis of Lille (MEL) acknowledges that two of the PFAS detected are more concerning than the others. Alain Bézirard, Vice-President of MEL in charge of water policy, stressed the need to remain vigilant and ensure there is no rise in contamination levels.

The exact source of this pollution has not yet been identified, but MEL suspects the presence of a former public landfill site. Investigations are ongoing to confirm this theory and carry out decontamination of the area.

The Response of Local and National Authorities

Following publication of the results of the investigation carried out by France Bleu Nord and the Radio France investigative unit, the Regional Health Agency (ARS) and the European Metropolis of Lille (MEL) sought to reassure the public regarding tap water quality. The ARS stated that the PFAS levels detected in the Lille sample remain below the thresholds set by French and European legislation, namely 0.1 µg per litre of distributed and consumed water.

Despite these reassuring statements, it should be remembered that the presence of PFAS, even at low levels, raises concerns regarding risks to public health. Some of these compounds (PFOA and PFOS) are classified as carcinogenic or potentially carcinogenic by the International Agency for Research on Cancer (IARC).

• In response to this situation, MEL announced a series of measures aimed at strengthening monitoring and control of drinking water quality across its area.
• Regular sampling and analysis will be carried out throughout the distribution network to track PFAS levels and detect any increases.

At the same time, investigations are ongoing to identify the exact source of the pollution and introduce suitable solutions. MEL is notably considering the installation of activated carbon filters in water treatment plants, a technology effective for removing PFAS.

Awareness campaigns will also be carried out with industrial operators to encourage them to reduce PFAS discharges into the environment.

PFAS Are a National and Global Problem

Samples taken in nearly 90 towns and cities, from Lille to Auxerre via Saint-Jean-de-Losne and Déols, highlighted the presence of these forever pollutants in 43% of the samples analysed.

This widespread contamination highlights the need for awareness and action on a national and global scale. PFAS, used for decades in many everyday products and industrial activities, have spread through the environment by contaminating soil, surface water and groundwater reserves. Their presence in tap water is only the visible part of a much wider issue.

How Can You Drink Cleaner Water?

Tap water contains essential minerals for your health, but pollution levels are far too high. PFAS are not the only substances detected, as other dangerous contaminants such as heavy metals may also be present. The best solution is to use a gravity filter. Combined with an activated carbon filter, it can reduce the presence of these chemical substances by 99%.

• It is particularly easy to use, as you simply fill the tank and gravity takes care of removing impurities.
• You can carry the unit anywhere because it does not require electricity.
• The gravity water filtration system is made from food-grade AISI 304 stainless steel.

In less than 5 minutes, your setup will be ready and able to purify tap water, river water and non-potable water, which is not the case with a simple filter jug.