Planning conditions and considerations

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Planning checklist:

  1. Have you considered rainwater harvesting?
  2. Have you considered the use of grey water?
  3. Have you considered water saving devices?
  4. If renovating a premises have you considered laying a new supply from the watermain into the premises? This should definitely be considered if the existing supply is very old and prone to leakage or if it is a lead supply.
  5. Do you have adequate storage? Storage equivalent to 24 hours usage (or as specified in the Dublin City Council Waterworks Regulations 1975 – whichever is the greater) must be provided in all developments.
  6. Is your storage tank fitted with a byelaw 30 kit? A byelaw 30 kit contains connectors and valves to prevent light and insects entering the tank - to thus keep the water clean. In addition there should also be a screened overflow pipe (to prevent insects), a reinforcing plate to stiffen the cistern wall around the float valve, and an insulating jacket to prevent freezing during winter.
  7. If the proposed development is greater than two storeys in height are you installing a booster pump(s)? Note: All booster pumps in excess of 10 litres/min capacity must be fed from a break cistern.  The effective capacity of a break water cistern should be decided after consideration of the total water storage requirements and its location within the building but should not be less than 15 minutes pump output
  8. Do incoming direct feed pipes feed only storage tanks or drinking water points?  Note: All appliances and fittings, including central heating units, shall only be fed from internal storage tanks.
  9. For new developments or extensions have you checked the City Council’s records to confirm that you are not building over an existing water main? This is particularly important if building on a former Local Authority housing scheme, where water mains were often laid in private property.
  10. Where applicable are automatic irrigation systems fed from a supply other than mains water? Note: it is not permitted to feed automatic irrigation systems with mainswater.


For large developments:

  1. Have you provided Water Services with the expected average daily demand (m3/day) and peak demand (l/s) for the proposed development?
  2. Do you have a maintenance programme for storage and break tanks?
  3. Do you have a Water Conservation Management Plan?
  4. Do you require a temporary water supply for a building site?  If so it must be applied for and agreed with the Water Services Division in advance
  5. Have you arranged a pre-application meeting with the Water Services Division to discuss internal plumbing arrangements prior to submission of application?

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

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