When you think of water filters, you probably imagine something that gets rid of all the nasties: chlorine, heavy metals, microplastics, and all those other uninvited guests in your glass. But here’s the twist: not everything in your water needs to be filtered out—and if your filter is stripping it all, you might be missing out.

At Earths Water, our filters are clever. They’re designed to get rid of the bad stuff without throwing the baby out with the bathwater (or, in this case, the minerals). So let’s clear the confusion and break down why filtering everything isn’t the goal, and how the right kind of filter—like Earths Water—keeps your water clean, healthy, and actually enjoyable to drink.

The Problem With “Over-Filtering” Your Water

We get it—pure sounds good. Crystal-clear, contaminant-free, H₂O in its cleanest form. But like mentioned earlier in this blog, ultra-purified water isn’t always healthy.

Healthy minerals like calcium, magnesium, potassium, zinc, and selenium are found naturally in many water sources. These help with bone health, muscle function, hydration, and even your body’s ability to balance pH.

So basically, filters that strip water down to just hydrogen and oxygen molecules, removing everything, including beneficial minerals, can leave you with something that’s technically “pure” but not exactly nourishing.

In fact, the World Health Organization warns that demineralised water is not considered ideal drinking water and its long-term consumption can potentially lead to several health risks like cardiovascular diseases, pregnancy disorders, higher risk of fracture in children, and even cancer.

What Earths Water Filters Remove (And What They Don’t)

Our filters are smart. They target the harmful stuff and leave the good bits where they belong.

What Water Filters Remove

Let’s start with the must-go crowd. Earths Water filters remove 98% of common water contaminants, including:

Chlorine

While great at killing germs in public water, it can give your water a harsh taste and smell.

Heavy metals

Lead, mercury, arsenic—not something you want floating around in your glass.

Microplastics

Tiny plastic particles that shouldn’t be anywhere near your glass.

Bacteria and viruses

Depending on where your water’s coming from, these can be a real concern.

Pesticides and herbicides

Runoff from agriculture can linger in our waterways and end up in your tap.

Our multi-layered filter system, using our proprietary COREtech™ filter technology, targets and traps all the usual suspects—without going nuclear on the good stuff.

What Water Filters Don’t Remove (For Good Reason)

Here’s where we’re different. Earths Water filters are designed to keep the essential minerals that your body actually needs. Here’s what our filters let through and increase—on purpose:

Calcium and Magnesium

These minerals aren’t just good for your bones—they help with nerve function, muscle contractions, and keeping your heart ticking along nicely. Filtering them out? No thanks.

Potassium (in small amounts)

These electrolytes help your body stay hydrated and support everything from blood pressure to muscle function. Good filters maintain their natural balance.

Zinc, Selenium, and Trace Elements

You’ll find these minerals in quality water sources and in Earths Water’s filters. Zinc helps with immune function, selenium with antioxidant support—and yes, we leave them in.

Natural Alkalinity and pH

Our filters help bring your water’s pH up to a more alkaline level (around 7.4–8.5), which can make water taste smoother and reduce acidity in the body.

So… Why Leave These Minerals In?

Because your body needs them. And unlike contaminants, minerals in water are bioavailable, meaning your body can absorb and use them quickly. Plus, they help water:

  • Taste better – flat, demineralised water can taste metallic or just plain weird

  • Hydrate better – minerals help water absorb more efficiently into your cells

  • Balance your electrolytes – which keeps your energy, mood and muscles happy

A filter that wipes all of that out? Not ideal.

How Earths Water Filters Strike the Balance

We’ve carefully designed water filters to do one very specific job: remove what you don’t want, and keep (plus increase) what your body actually needs. Here’s how it works:

Step 1: Pre-Filter Mesh - The first line of defence, blocking sediment, rust, and grit to ensure a clean start.

Step 2: Activated Carbon Layer - Goodbye chlorine, bad tastes, and odours—hello fresh, crisp water.

Step 3: Ion Exchange Resin - Reduces heavy metals like lead and mercury, while preventing limescale build-up to protect your appliances.

Step 4: Micro-Particle Filter - Traps microplastics and ultra-fine contaminants other filters miss, for purer water.

It’s a process that’s gentle, effective, and refreshingly clever. And because it’s not aggressively stripping your water, you get a smoother taste—no metallic tang, no weird aftertaste.

Why Less Isn’t Always More

There’s a bit of a myth floating around that filtered water should be completely empty of everything. But nature doesn’t work that way.

In fact, some of the healthiest, most refreshing water in the world like alpine springs or underground aquifers isn’t ultra-purified. It’s naturally filtered through rock, soil, and sediment, picking up minerals along the way. Earths Water filters work on the same idea, minus the mountain hike.

So when someone tells you their filter removes 100% of everything? That’s not necessarily something to feel good about. Imagine, you’re drinking water that’s been stripped of flavour, benefits, and balance.

It’s What’s Left In That Matters

The best water doesn’t just taste good—it supports your body too. That’s why Earths Water filters don’t remove everything. They keep the good stuff in, so your water hydrates better, tastes smoother, and helps you feel your best.

If you want smart, effective, and health-supporting filtration without stripping your water bare, you’re in the right place. Take a peek at our full range of filters and start hydrating yourself and your family with only the best.