FAQ on Water Softeners, Water Filters and Water Coolers

Frequently asked questions on the topic of water filters, water coolers and water softeners are presented here to help the end-user find answers on Water Softeners, Water Filters and Water Coolers.

What is hard water/limescale?

Water which contains dissolved chalk, lime and other minerals is known as Hard Water. This can cause major issues, if not treated, regards your plumbing, heating, water appliances such as showers, kettles, dishwashers, washing machines, toilets etc as well as limescale staining on kitchen and bathroom surfaces.

What is soft water?

Soft water is water which does not contain dissolved chalk, lime and other minerals.

How to differentiate between hard and soft water?

When a water sample is mixed with washing powder or soap, hard water produces less lather while soft water produces more later, in a shorter period.

How can I get soft water and remove limescale for good?

Soft water can be obtained by using a water softener system. Water softeners remove chalk, lime and other minerals from hard water to make it softened and this process is called ion exchange or simply known as water softening. Removing limescale is a chore! EWT Water Softener Systems bring you soft water and zero limescale.

How long does a water softener last and do I need to get it serviced?

A good water softener can provide soft water for over a decade when fed with the right amount of salt and yes you should maintain the softener with a regular annual service.

How much does a water softener cost during operation?

The monthly recurring cost of maintaining an operational water softener is less than €1.95 per person per household regards electricity, roughly €60 – €80 of salt usage annually and as well as the annual service cost.

What are the different types of water softeners available?

Water softeners can be classified into 5 types:

  • Single Tank Water Softeners
  • Twin Tank Water Softeners
  • Non-Electric Water Softeners
  • Metered Water Softeners
  • Timered Water Softeners

What are the benefits of using a water softener?

Water Softeners provide real cost savings in service, maintenance and replacement and hiring of expensive plumbers to fix water heaters, dishwashers, washing machines, kettles and showers but having a water softener also extends their lifespan. It saves money on reducing shampoos, shower gels, detergents, calgon tablets, limescale removal products, improving condition of your hair and skin as well as many more other benefits.

How much EWT Water Softener save me when installed?

Buying and using an EWT Water Softener can save Irish households roughly around € 100 per month!

Which types of salt are used in a water softener?

The types of salt used in water softeners are as follows and can all be purchased easily from EWT online:

  • Block Salt
  • Crystal Salt
  • Tablet Salt

How often should salt be added to a water softener?

The salt level of water softeners should be checked every month and should always be kept above 50%. Having no salt in a water softener can lead to limescale returning in the home.

What is meant by flow rate?

Flow rate is referred to the volume of water which passes through a water cooler, water softener or water filter per unit of time. The higher the flow rate, the more powerful the water treatment equipment.

Can I use soft water for cooking?

Once softened water is passed through a water filter it becomes filtered. Softened water is still safe for cooking but we do recommend to filter it to remove any contaminants that may be in your water supply that the softener does not remove.

What is a water filter?

A water filter is a household or commercial water treatment product which filters water contaminants from drinking water. Water filters are capable of converting raw, tap water into clean drinking water.

What is meant by potable water?

Potable water is water which is fit for consumption by humans and animals. Potable water is also called drinking water.

What are the different types of water filtration systems available?

The different types of water filtration systems available are:

  • EWT G1 Filter
  • EWT Reverse Osmosis Water Filter System
  • EWT Fluoride Filter
  • EWT Water Cooler

How can I get clean, drinking water?

Clean, drinking water can be obtained by installing a water filtration system. Raw, unclean tap water goes into a water filter to become clean and becomes filtered drinking water.

What are the benefits of using a water filter?

Besides getting clean, filtered drinking water, water filters are able to remove far more water contaminants than any other water purification method. The benefits of using a water filter are as follows:

  • Remove water contaminants such as chlorine, dirt sediment, rust, herbicides and pesticides
  • More advanced filter systems such as the EWT Reverse Osmosis remove up to 99.9% of all unwanted contaminants
  • Costs Much Less than Bottled Water
  • Reduce carbon footprint by removing plastic waste

Is boiling water good for health?

  • Never drink boiling water!
  • Wait for boiled water to cool down before consumption.
  • Boiled water removes bacteria from the water.
  • Don’t forget to filter your boiled water.

What is a Reverse Osmosis?

  • Reverse osmosis (RO) is a water purification technology that uses a partially permeable membrane to remove ions, molecules and larger particles from drinking water…. Applying an external pressure to reverse the natural flow of pure solvent, thus, is reverse osmosis.
  • It can remove up to 99. of all unwanted substances excluding bacteria such as E.coli and Coliforms for example, this will require a Ultra Violet system to be installed.
  • Water purification systems which use the reverse osmosis purification process are cheaper and energy-efficient when compared to purification units which use the water distillation process.

What is a water cooler?

A water cooler is a device which stores water and provides chilled water on demand. Water coolers are usually installed into commercial water mains.

What are the different types of water coolers available?

There is one main of water cooler EWT has available to our customers:

  • Plumbed-In Water Coolers

How can I get chilled water?

Getting chilled water has never been easier. Just install an EWT water cooler at your premises. Call EWT for a water cooler today!

What are the benefits of using a water cooler?

There are many benefits of using a water cooler. Two main benefits of using water coolers are:

  • Reduces Cost – Saves you money
  • Eco-friendly – Good for the environment
  • Great tasting, filtered water at your premises

Where can I get an offer on water coolers in Ireland?

You’re at the right place! EWT brings you special offers on water coolers from time to time. Call our sales and ask for a deal!

Can I get any special offers on water filters?

Yes, you can! EW Technologies – Ireland’s leading water filter company launches special offers on the best-designed water filters in Ireland.

Where is EW Technologies located?

EW Technologies – Ireland’s leading water filtration and water softener company has offices in Galway and Dublin. We also have offices in London, Poland, Lithuania and France. EWT was formed in 2002 and is an Irish owned company.

What is the molecular composition of water?

Each molecule of water contains 2 atoms of Hydrogen and 1 atom of Oxygen. The molecular formula of water is H2O.

What is meant by primary treatment of water?

The process of water filtration by using physical filters or through chemical means is known as pre-treatment or primary treatment of water.

What is meant by secondary treatment of water?

The removal of organic matter from waste water by making use of biological processes is known as secondary treatment of water. Sewage treatment plants implement secondary treatment of water for water purification.

What is meant by tertiary treatment of water?

The advanced cleaning of waste water which helps remove nutrients such as phosphorus, nitrogen and most suspended solids from water is known as tertiary treatment of water.

What is meant by desalination or desalination of water?

Desalination or desalination of water refers to the process of removal of some amount of salt and other minerals from saline water.


Have a FAQ which we’ve missed? If you have a question which you’d like to share with us, please don’t hesitate to contact us or send us e-mail on [email protected]. We’d love to hear from you!