The answer? Technically, yes. London’s tap water is treated and tested regularly, and it meets the legal safety standards. But for some people, “safe” isn't good enough.

What’s Really in London’s Tap Water?

London’s water mostly comes from the River Thames and River Lee. It’s cleaned and disinfected, but still contains trace amounts of chlorine, limescale, and even tiny bits of heavy metals. This can affect both the taste and long-term health benefits of the water. That’s where water filtration systems come in.

Why People Are Switching to Blue Water Reverse Osmosis

One option that’s getting a lot of attention is the blue water reverse osmosis system. This advanced setup removes nearly all impurities from water—including chemicals, heavy metals, and bacteria—by pushing it through multiple filtration stages.

A lot of users say they immediately notice the difference in taste and clarity. And if you're someone who's sensitive to the "chemical" taste in tap water, reverse osmosis can be a game-changer.

The Importance of Mineralized Water

Now, some people worry that reverse osmosis might strip the water of healthy minerals too. That’s a fair concern. But many modern systems, like those in the blue water filter system range, include an extra step to mineralize water. This means they re-add good minerals like calcium and magnesium—giving you water that’s not only clean but also good for your body.

What is the Blue Water Filter System?

A blue water filter system is designed to provide a steady supply of clean, filtered water right from your tap. It's compact, usually fits under the kitchen sink, and doesn’t need much maintenance. Plus, it’s more eco-friendly than constantly buying bottled water.

Invest in Blue Water Equipment for Peace of Mind

If you’re serious about water quality, it might be time to look into blue water equipment. These systems are built to last, easy to install, and help make sure every glass of water you drink is as pure as possible.

You’ll be doing your health a favor—and possibly saving money in the long run, too.

Final Thoughts

So, is tap water safe to drink in London? Sure—but if you want something cleaner, healthier, and better-tasting, a blue water reverse osmosis system could be a smart move. Add in the benefits of mineralize water, and you get the best of both worlds: pure hydration and essential minerals.

Whether you’re considering a full blue water filter system or just want to explore different blue water equipment options, upgrading your water could be one of the simplest ways to invest in your well-being.

Best Water for Espresso Machines: Distilled or Mineralized

If you're passionate about coffee, you know the ingredients matter — especially the water. You may have heard people mention distilled water as a clean option for brewing, but is it really the best water for espresso machines? And what about the idea of adding minerals to distilled water?

Let’s break it all down so you can make the best choice for both your coffee and your equipment.

Why Water Quality Matters for Your Espresso Machine

Espresso is around 95% water, so it makes sense that water quality affects both taste and performance. Hard water can create limescale, which damages internal components. On the other hand, water that’s too pure can also cause problems. That's why choosing the best water for espresso machines isn’t just about purity — it's about balance.

Is Distilled Water Safe to Use?

Many people assume that using distilled water for coffee is a smart move — after all, it’s super clean, right? Not quite.

Here’s the deal:

• Distilled water has zero minerals. While this means no limescale, it also means there's nothing to help extract flavors from your coffee grounds.
  
  

• It can corrode metal parts inside your espresso machine over time because it’s "hungry" water — it wants to absorb minerals, and it may take them from your machine.
  
  

• Many coffee equipment brands actually recommend against using distilled water for this very reason.
  
  

So, while distilled water sounds good on paper, it's not ideal for most espresso machines straight from the bottle.

How to Safely Use Distilled Water for Coffee

If your local tap water is hard or full of contaminants, you might still want to start with distilled water. The trick? Add minerals back in.

Yes, adding minerals to distilled water is a real (and smart) thing.

You can do this in two main ways:

• Mineral packets (like Third Wave Water): Simply pour the packet into a gallon of distilled water, shake, and you’re good to go.
  
  

• DIY mineral blends: If you're comfortable measuring small amounts of things like magnesium sulfate or calcium chloride, you can customize your water exactly the way you want it.
  
  

This way, you get the cleanliness of distilled water, plus the essential minerals needed for great espresso flavor and machine safety.

What About a Distilled Water Machine?

If you want total control over your water source, you might consider buying a distilled water machine. These devices purify water at home by boiling and re-condensing it, leaving behind all minerals and impurities.

They’re useful if:

• Your tap water is poor quality
  
  

• You want consistent results
  
  

• You’re planning to remineralize your distilled water for espresso
  
  

Just remember: never use 100% distilled water in your espresso machine unless you’ve added the right minerals.

The Bottom Line

So, is distilled water good for espresso machines? Not by itself.

The best water for espresso machines is clean, lightly mineralized, and balanced. If you're using distilled water, make sure you're adding minerals to distilled water before brewing. Whether you use filtered water, spring water, or create your own blend using a distilled water machine, just remember: your water is just as important as your beans.

FAQs

Can I use distilled water in an espresso machine?

Only if you add minerals first. Using pure distilled water can cause internal damage over time.

What is the best water for espresso machines?

Filtered or spring water with balanced minerals. Ideal mineral content includes calcium, magnesium, and a TDS of 75–250 ppm.

Why is distilled water bad for coffee machines?

Because it lacks minerals, it can be corrosive and result in flat-tasting coffee.

How do I add minerals to distilled water?

You can use commercial mineral packets or DIY with safe mineral additives like magnesium sulfate and calcium chloride.

Should I buy a distilled water machine?

It’s a good idea if your tap water is hard or inconsistent, but always remineralize the water before using it in an espresso machine.