Diversion and build-over enquiry
Building Near an Irish Water Asset
Minimum Separation Distance from proposed building to Irish Water Sewer
|Sewer Diameter (mm)|
|Dept to Invert||150mm - 449mm||450mm - 749mm||>750mm|
|<3m||3m||3.5m||Contact Irish Water|
|3m - 4m||3m||4m||Contact Irish Water|
|4m - 5m||5m||5m||Contact Irish Water|
|5m - 6m||5m||6m||Contact Irish Water|
|> 6m||Contact Irish Water|
Minimum Separation Distance from proposed building to public water main
|Water Main Diameter (mm)|
|Dept to Invert (m)||50mm - 100mm||100mm - 200mm||200mm - 600mm||> 600mm|
|< 3m||3m||3m||5m||Contact Irish Water|
|> 3m||Contact Irish Water|
Building over an Irish Water Sewer
- a maximum diameter of 150mm or;
- has a diameter of 225mm while serving less than thirteen (13) houses upstream of the proposed build-over works.
Building over a Public Water Main
In order to protect the water supply to other homes and business in your area, Irish Water do not permit any type of development to be built over any public water main.
Diversion or Alteration of Irish Water Assets
If it is determined that a diversion of an Irish Water asset is required to facilitate your development, you are required to enter into a Diversion Agreement with Irish Water prior to any works commencing on site. In accordance with Irish Water Connections Charging Policy and as approved by the Commission for Regulation of Utilities, the applicant will be liable for all costs associated with diverting or altering Irish Water’s water/wastewater assets.
Applicant establishes location of Irish Water assets
Applicant to determine location of all Irish Water assets on development site by:
Submitting request to email@example.com for high level map of known IW assets.
Carrying out site investigation.
Other indicators or methodologies for identifying infrastructure located within the site are the presence of registered wayleave agreements, visible manholes, vent stacks, valve chambers, marker posts etc.
Applying for a Diversion
It is the applicants responsibility to undertake the detailed design of the proposed diversion in accordance to Irish Water Standards Details and Codes of Practice.
Submit Diversion Application Form along with the design proposal to firstname.lastname@example.org.
Assessment of diversion application
Irish Water register diversion application and assign a unique ‘DIV’ reference number.
rish Water will assess the application to determine compliance with Irish Water Codes of Practice and Standard Details.
IW issue diversions ‘Confirmation of Feasibility’
Once Irish Water completes the review and it is deemed to be acceptable the applicant is issued with a Confirmation of Feasibility letter.
Diversion Offer issued to Customer
Irish Water issues a Diversion Offer detailing terms and conditions, charges and any additional required agreements such as Deed of Easement and Collateral Warranties.
Accepting Diversion Offer
The applicant can enter into a Diversion Agreement with Irish Water by accepting the terms and conditions as set out in the Diversion Offer, submitting proof of insurances, method statements etc., and by making the required payments.
Following the acceptance of the Diversion Offer and provision of other requirements by the applicant, Irish Water will execute the Diversion Agreement and issue a notice for construction to proceed.