While tap water is safe to drink in many countries, you may want to think twice about using it to clean certain body parts or in certain household products.

US-based family doctor Dr Jen Caudle issued the warning on her TikTok channel. The first situation to avoid using tap water, she said, is as a nasal rinse.

1. Do not use it as a nasal rinse

Tap water isn’t safe to use as a nasal rinse because it’s not adequately filtered or treated, said Dr Caudle.

She added: ”Some tap water actually has low levels of organisms that can cause potentially serious infections.

“So when it comes to your neti pot, your nasal rinse, your nasal irrigation etc. please only use distilled, sterile, or previously boiled water.”

2. Eyes

There’s lots of different germs in tap water that can cause eye infections – some that are really nasty by the way, said Dr Caudle.

With contact lens users in mind, she advised: “Don’t use tap water with your contact lenses, instead you want to clean, rinse and disinfect your contact lenses with commercially made sterile solutions before you put your contacts in your eyes.

“Do not use tap water or homemade solutions or anything like that to disinfect or store contact lenses.”

3. CPAP machine

Not only does tap water potentially contain bacteria but it may contain minerals that can cause build up or scaling on your CPAP machine, warned Dr Caudle.

Continuous positive airway pressure (CPAP) therapy is a common treatment for obstructive sleep apnea, and a machine uses a hose connected to a mask or nosepiece to deliver contact and steady air pressure to help you breathe while you sleep.

Dr Caudle said: “So with your CPAP, distilled water is the best choice.”

4. Home humidifiers

Humidifiers are devices that add moisture to the air to prevent dryness that can cause irritation in many parts of the body.

Dr Caudle said: “Follow directions on the box but generally distilled water tends to be best.”

You May Also Like

Study finds almost half of cancer cases linked to one common but deadly lifestyle habit

A new study has found that almost half of all cancer cases are…

What is cryptosporidium? Symptoms of parasitic disease as hundreds fall ill in UK town

Hundreds of residents in a UK seaside town have fallen ill following…

The simple trick that can help you 'fall asleep in minutes' as one in three Brits struggle

This article contains affiliate links, we will receive a commission on any…

CDC warns drowning deaths are rising for the first time in decades, which they blame on Covid LOCKDOWNS –  after tragic case in Louisiana

Drowning deaths are on the rise for the first time in decades,…