What’s Really in NZ Shower Water? (And Why It Matters More Than You Think)

Most people assume that if their tap water is safe to drink, it must be fine for their skin and hair too.

But shower water is a different story.

This article breaks down what’s commonly found in NZ shower water, why it affects your body differently than drinking water, and what to be aware of — without repeating what you already know.

Drinking water vs shower water

Here’s the key difference:

When you drink water, it passes through your digestive system.

When you shower, your skin absorbs water directly, and warm steam increases exposure through both skin and inhalation.

That’s why certain additives and minerals can feel much harsher in the shower than they ever do in a glass.

Common things found in NZ shower water

Chlorine

Chlorine is widely used across New Zealand to disinfect municipal water supplies.

It’s effective for killing bacteria — but it’s also drying.

On skin and hair, chlorine can:

• Strip natural oils

• Disrupt the skin barrier

• Leave hair feeling dry or rough

This is one of the most common reasons people notice dryness after showering.

Heavy metals (from pipes, not the source)

Even if your local water supply is high quality, older household plumbing can introduce metals like:

• Copper

• Lead

These usually come from pipes, joints, or fittings — especially in older homes.

Over time, repeated exposure can contribute to irritation for people with sensitive skin.

Minerals & hard water

Some regions of NZ experience harder water than others.

Hard water contains higher levels of minerals like calcium and magnesium. While not harmful, it can:

• Leave residue on skin and hair

• Make hair feel coated or dull

• Reduce how well soaps and shampoos rinse

Hard water doesn’t mean “dirty” — it just behaves differently.

Why hot showers make it worse

Heat matters.

Warm water:

• Opens pores

• Increases absorption

• Turns chlorine into vapour

That combination means your exposure is higher in the shower than at the sink.

This is why people often notice symptoms after showering, not throughout the day.

Signs your shower water may be affecting you

You don’t need a lab test to notice patterns.

Common signs include:

• Skin feeling tight straight after showering

• Itchiness that fades hours later

• Hair that feels worse after washing, not better

• Needing more moisturiser than expected

These don’t guarantee water is the issue — but they’re worth paying attention to.

So what can you actually do?

You don’t need to overhaul your whole home.

Many people start by improving the water they’re exposed to most often — their shower.

Reducing chlorine and unwanted impurities can make daily routines feel gentler and more supportive over time.

Your shower is one of the few places where your body is exposed to warm water, steam, and direct contact — every single day.

Understanding what’s in that water gives you the power to make small changes that can add up.

Not because your water is “bad” —

But because your skin and hair deserve better than the bare minimum.

— Mineral Filter