Can chemicals in new shower heads leach into water?

What's actually in it

Many modern shower heads are made from cheap plastics that break down over time. When hot water runs through these fixtures, it can cause the plastic to shed microplastics into your shower stream. These are tiny pieces of plastic that end up in your water and can eventually enter your body.

Beyond the plastic parts themselves, your water system can be exposed to other dangerous substances. Chemicals like PFAS (often called forever chemicals) can enter drinking and bathing water through industrial accidents or contaminated infrastructure. Once these chemicals are in your pipes, they don't just go away. They stay in the water that touches your skin and hair every single day.

What the research says

The science shows that these contaminants have real effects on your health. A 2026 study in Toxics found that exposure to microplastics is linked to serious metabolic issues, including diabetes. The study highlights how these particles interact with your gut and liver, showing that they are not just passing through your system without a trace.

Furthermore, water quality is often compromised by external chemical leaks. A 2026 study in ACS ES T Water documented how PFAS chemicals from fire-fighting foam infiltrated a public water system. This peer-reviewed research proves that once these persistent chemicals enter the water supply, they remain a constant risk to anyone using that water for bathing or drinking.