Frequently Asked Questions Regarding Water Quality

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 How do I report a leak?

To report a fault or seek an emergency repair phone Irish Water at the details below.

How do I find out more about my water pressure?

If you are having problems with water pressure please contact Irish Water at the details below.

Find out more about water pressure

Who is responsible for the pipe work to my property?

The part of the service pipe that links the water main in the street to the boundary of your property is the responsibility of Irish Water

The part of the service pipe from the boundary of your property to and within your house is your responsibility if you are the owner otherwise it is your landlord’s.

Where can I find information on water hardness?

Water hardness is the result of naturally occurring calcium and magnesium salts. Water containing small amounts of these salts is said to be soft, whilst hard water contains greater levels.

How can I save water?

There are many ways you can save water; not by going short or doing without, but by cutting out waste and unnecessary use and making a few small changes in your habits.

Why do I have white or cloudy water?

White or cloudy water is generally caused by air and appears as a haze of tiny bubbles. If a glass of cloudy water is allowed to stand for a few minutes, the water will clear from the bottom upwards as the air bubbles rise to the surface.  It is typically caused by disturbances in the water distribution system, ie when air enters the network from a burst main.

Why is my water brown, orange, or yellow?

The most common cause of brown/orange/yellow water is suspended particulate iron, which is dislodged from walls and floors of cast iron watermains. These deposits can become dislodged by hydraulic changes within the mains network (e.g. by vibration through the ground, use of hydrants or water supply interruptions) and become mobilised.

How can I find out information on lead in drinking water?

Dublin City’s drinking water supply does not contain lead when it leaves the water treatment plants and there are no lead watermains in the distribution network. However, for many years lead was used in the manufacture of small diameter water supply pipes (service connections). 

This means that in many properties built prior to the 1960’s part, or all, of the water supply pipe from the watermain in the street to the property, as well as the internal plumbing in buildings, may be made of lead. If lead is present in your drinking water it will have been dissolved from lead pipes and fittings between the watermain in the street and your tap.

Why is there a chlorine taste or odour from my water?

Chlorine is used in the treatment and distribution of drinking water as an anti-microbial disinfectant.

Chlorine has been used for many years as a disinfectant in the water industry to prevent the spread of infectious diseases, and has the added advantage that it remains effective from dosing right up to your tap.

The level of chlorine dosed into your drinking water is carefully controlled and monitored.

Drinking water treated with chlorine poses no risk to health, but if you are concerned about the taste then a good way to reduce this is to fill a jug with water and refrigerate it overnight.

The taste will disappear by morning as chlorine is released from the water.

It should be noted that water kept in this fashion should be treated as a perishable food and be consumed within 24 hours.

However if you do still have any concerns please contact Irish Water at the details below.

How can I minimise risk of frozen pipes?

Although damage to pipes occurs when they freeze, the burst only becomes apparent when the pipe starts to thaw. This bust can lead to flooding. The damage caused by flooding in the home or workplace can cost thousands of Euros to put right, and can also cause a lot of distress. These simple tips cost little to put in place but could make all the difference:

  • Wrap up pipes, water tanks and cisterns with insulation. Especially in unheated areas like lofts and outbuildings. Use good quality foam lagging
  • Let warm air circulate through the building, and occasionally leave the loft hatch ajar to allow warmth to enter the roof-space;
  • If you are going away, consider leaving central heating on low, or turn the water supply off at the stopcock and drain the system. Make sure you know where your stopcock is.

Find out what to do if your pipes become frozen

How do I turn off my water supply?

Homes typically have an internal and an external stop cock. Water can be turned off by rotating the stop cock in an anti-clockwise direction.

Why do I have no water supply?

If you have lost your water supply it could be for a number of reasons. These Q&As may help you to identify the problem. If not please contact Irish Water at the detials below.

For more information

Irish Water Contact Details:

Twitter:  @IrishWater
Telephone: 1850 278 278 (LoCall)
Minicom:  1850 378 378
(For hearing impaired customers with minicom equipment)
Postal Address: Irish Water, PO Box 860, South City Delivery Office, Cork City

To report an issue between the hours of 6pm and 8am Monday to Friday or at weekends, please continue to contact Dublin City Council on 01 6796186.

Please continue to contact Dublin City Council for information or issues relating to business account queries, surface water drainage and flood management.