6 Water Softener Myths Debunked

Water softeners have been around for decades, yet there are still plenty of misconceptions about what they do, how much they cost to run and whether they're suitable for modern homes.

At East Midlands Water Company, we've been working with domestic water treatment systems since 1989, and these are questions we hear regularly.

Watch: 6 Water Softener Myths Debunked

 

Myth 1: Water Softeners Can Damage Your Boiler

False. A water softener will protect your boiler and hot water system from limescale.

One of the biggest problems with hard water is the build up of limescale when water is heated.

Hard water contains dissolved calcium and magnesium minerals. When heated, these can form solid deposits on heating surfaces, inside pipework and around hot-water components.

Over time, this build-up can reduce heat transfer efficiency, water flow and contribute to additional wear on appliances.

A water softener tackles the problem at its source by removing the hardness minerals responsible for limescale formation.

This means that softened water will protect:

• Combination boilers and domestic hot water systems

• Hot water cylinders and heating elements

• Showers, taps and pipework

• Washing machines and dishwashers

Can you use a water softener with a combi boiler?

Yes. Water softeners can be used alongside combination boilers, provided the installation follows the boiler manufacturer's requirements.

The EMS10 Eco Premier can be installed with a bypass arrangement, allowing the water supply to be managed appropriately.

Answer: A water softener doesn't damage your boiler. When installed correctly, preventing limescale in the domestic hot water system is one of its biggest benefits.

Myth 2: You Can't Drink Softened Water

This is one of the most misunderstood subjects surrounding water softeners. The answer depends on the water's composition and how the system is installed.

To understand why, we need to look at how water softening works.

A conventional water softener uses a process called ion exchange.

As hard water passes through the resin inside the machine, calcium and magnesium ions are exchanged for sodium ions. This removes the hardness responsible for limescale formation.

The amount of sodium introduced depends on how hard the incoming water is.

Which water softeners can you drink the water from?

The EMS10 Eco Premier uses Ultra SX food-grade ion-exchange resin, specified for domestic water-softening applications.

This is an important material consideration because the resin is in direct contact with the water passing through the machine.

As this is a food-grade, ultra fine resin, you can drink the water from the EMS Eco Premier water softeners.

Can you have softened water throughout your home and still keep a drinking-water tap?

Absolutely.

Many households install their water softener so that bathrooms, showers and appliances receive softened water, while a separate unsoftened cold-water supply remains available at the kitchen sink.

This arrangement gives homeowners the benefits of limescale prevention and a filtered hard water tap, where you can install a long life drinking water filter like the System 40.

Answer: Softened water isn't automatically unsuitable for every adult, but sodium levels and UK drinking-water guidance matter. The EMS10's food-grade resin allows you to be able to drink the water, even without additional filtration.

Myth 3: Water Softeners Need Constant Servicing and Maintenance

Modern water softeners are far more automated than many people realise.

A common misconception is that water softeners require frequent filter changes, regular manual cleaning or complicated maintenance to keep working.

In reality, modern meter-controlled systems handle much of the process automatically.

How does the EMS10 Eco Premier maintain its resin?

The EMS10 uses intelligent meter-controlled regeneration.

Instead of simply regenerating on a fixed daily timer, its control system monitors water usage and manages regeneration based on the system's settings and remaining softening capacity.

When regeneration is required, a brine solution is passed through the resin bed. This displaces the accumulated hardness minerals and restores the resin's ability to soften water.

The process is automatic and doesn't require the homeowner to manually clean the resin after every cycle.

The EMS10 also offers:

• A digital control display

• Adjustable incoming-water hardness settings

• Automatic regeneration

• Configurable regeneration settings

• A holiday or timed regeneration function

What maintenance does a water softener actually need?

The only task is checking the tablet salt level and topping it up when required.

Unlike a cartridge-based water filter, the ion-exchange resin isn't routinely replaced every few months.

The bottom line: Modern water softeners don't require constant attention. The EMS10 automatically manages regeneration, while owners mainly need to monitor salt levels.

Myth 4: Water Softeners Cost a Fortune in Salt

They don't have to. Salt consumption depends heavily on the type of softener, its settings, incoming water hardness and household usage.

Water softeners require salt to regenerate their ion-exchange resin.

However, not all systems use the same quantity of salt, and not all regenerate with the same frequency.

An inefficient or poorly configured system can regenerate unnecessarily, wasting both salt and water.

This is one reason why understanding regeneration efficiency matters when comparing water softeners.

How much salt does the EMS10 Eco Premier use?

The EMS10 has a published salt consumption figure of approximately 0.68kg per regeneration.

It also has a quoted capacity of up to 3,000 litres of softened water between regenerations at an incoming hardness of 300ppm, depending on operating conditions and settings.

This matters because a softener's running costs aren't determined by how much salt it uses in one regeneration alone.

You also need to consider how many litres of softened water it can deliver before another regeneration becomes necessary.

The EMS10 combines its 10-litre Ultra SX resin bed with intelligent metered control to manage this process efficiently.

Why is meter-controlled regeneration important?

Imagine two households with identical water softeners.

One household uses much more water than the other because it has more occupants, more showers and higher daily demand.

A conventional timer-based softener might regenerate after the same fixed period regardless of how much water either household actually uses.

A correctly configured meter-controlled softener responds to water usage, helping reduce unnecessary regenerations.

The EMS10 is also equipped with adjustable hardness settings, allowing the system to be configured for the local water supply.

How much will running a water softener cost?

The answer depends on several factors: your local water hardness, daily consumption, regeneration frequency and the price you pay for tablet salt.

Answer: Rather than assuming every water softener is expensive to operate, compare its salt usage, regeneration capacity and control technology.

The EMS10 Eco Premier specifications provide figures that homeowners can use when comparing systems.

Myth 5: Installing a Water Softener Will Ruin Your Water Pressure

A properly selected water softener will not cause a noticeable loss of performance throughout your home.

One of the biggest concerns for households with multiple bathrooms is whether a water softener will restrict flow when several outlets are running simultaneously.

Tmportant consideration is selecting a softener with sufficient flow capacity for the property's requirements.

How much water can the EMS10 deliver?

The EMS10 Eco Premier has a flow rate of up to 86 litres per minute.

This provides substantial rated flow capacity for a domestic water softener and makes it an option worth considering for homes with multiple bathrooms or relatively high simultaneous water demand.

Choosing the correct size

The EMS10 is suitable for a wide range of family homes.

For properties with particularly high water demand, the larger EMS15 Eco Premier and the EMS15 1-inch high-flow option provide alternatives.

Before purchasing, it's worth checking the number of bathrooms, typical simultaneous water usage and existing plumbing configuration.

The bottom line: Water softeners don't automatically ruin pressure. The key is choosing a machine with appropriate flow characteristics for your household.

Myth 6: Installing a Water Softener Means Ripping Your Kitchen Apart

For most properties, installation is more straightforward than people expect.

Domestic water softeners are installed close to the incoming mains water supply, commonly under a kitchen sink or in a utility room.

The principle is simple: incoming hard water is diverted through the softener before returning to the household supply.

A typical installation includes an inlet connection, an outlet connection and a bypass valve, alongside the required drain arrangements.

Why is a bypass valve important?

A bypass allows the water softener to be isolated while maintaining a supply of water to the property.

This is useful during maintenance and when following boiler manufacturer's requirements for filling a central-heating circuit.

Softeners also requires a suitable waste connection for regeneration water, a separate overflow connection and access to a continuous electrical supply for its 12V transformer.

Correct non-return protection and any required unsoftened drinking-water take-off must also be considered.

Is the EMS10 compact enough to fit under a kitchen sink?

The EMS10 Eco Premier measures:

540mm high × 265mm wide × 460mm deep.

Its compact cabinet contains the resin vessel and integrated brine tank, helping keep the installation footprint relatively small.

Naturally, installers still need to allow enough room for plumbing connections, the control display, ventilation where appropriate and access to refill the salt.

The EMS10 is available with fitting-kit options to suit different plumbing arrangements.

A competent installer can often integrate a water softener without extensive alterations, although every property is different.

The bottom line: Installing a modern water softener doesn't necessarily mean a major kitchen renovation. The right location, plumbing connections and fitting kit are what matter.

What Is Ultra SX Food-Grade Resin, and Why Does It Matter?

The resin inside a water softener is one of its most important components.

It's responsible for the actual water-softening process, yet it is often overlooked when customers compare machines.

Two water softeners may look similar externally while differing in resin type, capacity, control technology and operating efficiency.

What exactly does water softener resin do?

Inside a water softener is a bed of tiny polymer resin beads.

These beads contain ion-exchange sites that attract dissolved calcium and magnesium ions as hard water passes through the resin.

In a sodium-based softener, sodium ions are released into the water in exchange.

As a result, the treated water contains much less of the calcium and magnesium responsible for hard water and limescale.

Eventually, the resin's available exchange capacity becomes depleted.

Regeneration with a saltwater brine restores that capacity so the process can continue.

This is how conventional ion-exchange softeners provide softened water repeatedly without needing to replace the entire resin bed after each use.

What is special about Ultra SX resin?

The EMS10 Eco Premier uses Ultra SX food-grade ion-exchange resin, an important part of its premium specification.

EMWC specifies this resin for efficient hardness removal in domestic water-softening applications.

Its fine resin structure provides contact area for the ion-exchange process, supporting the efficient removal of hardness minerals as water passes through the resin bed.

The EMS10 contains 10 litres of this resin, working alongside its meter-controlled regeneration system.

The overall result is a machine with published performance figures of up to 3,000 litres between regenerations at 300ppm hardness, approximately 0.68kg of salt per regeneration and a maximum rated flow of up to 86 litres per minute.

What does food-grade resin mean?

Food-grade describes the intended material suitability of the resin for applications involving water used in domestic or food-related environments.

EMWC describes its water-softening resin as specially purified for household use and free from chlorinated solvents.

This is a materials consideration rather than a claim that the softener filters bacteria, removes chemical contaminants or eliminates the sodium produced during ion exchange.

Likewise, food-grade terminology alone should not be taken as evidence of a particular independent certification unless the relevant resin documentation confirms that certification.

Is Ultra SX better than ordinary water softener resin?

When comparing resin types, useful considerations include their ion-exchange capacity, bead size and uniformity, physical stability, suitability for the intended water application and long-term operating characteristics.

A higher-quality resin can contribute to reliable performance, but the overall effectiveness of a water softener also depends on the vessel design, resin volume, incoming hardness, flow conditions and regeneration system.

This is why comparing complete machine specifications is more useful than comparing resin names alone.

The EMS10 combines its Ultra SX resin with adjustable electronic controls, a 10-litre resin capacity and automatic regeneration.

Does food-grade resin mean a softener is also a water filter?

No. Water softeners and drinking-water filters perform different jobs.

A water softener removes calcium and magnesium hardness through ion exchange.

A carbon-based water filter is designed for other treatment objectives, such as reducing chlorine taste and odour and selected impurities.

For households wanting limescale prevention throughout the home alongside a separate filtered drinking-water supply, the two systems can work together.

For example, an EMS10 can be combined with a System 40 under-sink water filter installed on a suitable drinking-water supply.

Explore the EMS10 Eco Premier water softener and its full specifications.

Frequently Asked Questions About Water Softeners

Does a water softener completely stop limescale?

A correctly operating ion-exchange water softener removes the calcium and magnesium responsible for hardness, preventing new hardness-related scale from forming in the treated water supply.

However, pre-existing limescale deposits do not necessarily disappear immediately, and outlets supplied with unsoftened water can still develop scale.

Does the EMS10 need electricity?

Yes. The EMS10 Eco Premier uses a 12V electrical supply to power its electronic controls and automatic regeneration system.

Does the EMS10 need salt all the time?

The softener requires a supply of tablet salt to produce the brine used during regeneration.

Salt is not continuously fed into the water during normal softening. The brine is used during regeneration and discharged through the waste system.

Owners should check the salt level regularly and refill it before the brine tank becomes empty.

Does a water softener remove chlorine or other drinking-water contaminants?

A conventional ion-exchange water softener is designed primarily to remove hardness minerals, not to act as a general-purpose drinking-water purification system.

For chlorine taste and odour or other specific filtration requirements, a suitable water filter should be considered separately.

How do I know if the EMS10 is right for my home?

The best water softener depends on your incoming water hardness, household water consumption, number of bathrooms, available space and plumbing setup.

The EMS10 is a strong option for many family homes, while the EMS15 range is worth considering for larger properties or unusually high demand.

You can start by checking your local water hardness and comparing your household requirements.

Final Verdict: Are Modern Water Softeners Worth It?

Many of the most common water softener myths come from misunderstandings about how the technology works, incorrect installations or assumptions that every machine operates in exactly the same way.

Modern water softeners can offer effective, long-term protection against limescale with automated regeneration and relatively little day-to-day attention.

However, the quality of the resin, regeneration efficiency, rated flow performance and overall system specification all matter.

The EMS10 Eco Premier brings together Ultra SX food-grade resin, intelligent meter-controlled regeneration, low published salt consumption, a maximum rated flow of up to 86 litres per minute and a 10-year parts-and-labour warranty.

For homeowners dealing with persistent hard water, that combination makes it well worth considering.

Ready to stop limescale in your home?

If you're unsure which system is right for your property, East Midlands Water Company can help you choose based on water hardness, household demand and installation requirements.

View the EMS10 Eco Premier Water Softener

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Or contact our team on 0116 276 3334 for advice on choosing the right system for your home.