Under the Freedom of Information Act 2000 (FOI) and the Environmental Information Regulations 2004 (EIR), public authorities, including Northern Ireland Water (NI Water) are obliged to make information available to the public. This includes information placed in the public domain in response to a request for information under the Freedom of Information Act and the Environmental Information Regulations.
This disclosure log lists NI Water’s responses to notable information access requests, both Freedom of Information (FOI) requests and primarily Environmental Information Regulation (EIR) requests, since April 2024.
We don’t publish personal information as this is exempt from release under the UK General Data Protection Regulation (UK GDPR) and Data Protection Act 2018.
We aim to review and refresh the disclosure log every few months.
You can see the responses to the requests for information by clicking the links in the ‘Request & Response’ column.
If you cannot find a specific request that you are looking for, please do not hesitate to contact NI Water Information Management Unit and we will do our best to make available all the information that the legislation allows the Company to disclose.
Further information
Guide to freedom of information | ICO
Guide to the Environmental Information Regulations | ICO
NI Water response times to information requests (five years data)
Filter Response By:
Asulam monitoring in the drinking water supply serving Tandragee from 1 January 2015 to 3 October 2026, including analytical results, monitoring decisions and any investigation records.
Clarification of the availability and meaning of modelled annual storm overflow spill volumes within the Lough Neagh catchment, and whether an estimate is held for all 726 identified storm overflows.
Clarification of the availability and meaning of modelled annual storm overflow spill volumes within the Lough Neagh catchment, and whether an estimate is held for all 726 identified storm overflows.
…Requested information about Article 161 Agreements, adoption costs, enforcement action and the use of bonds to complete sewer works.
Requested information about Article 161 Agreements, adoption costs, enforcement action and the use of bonds to complete sewer works.
Costs incurred and anticipated in addressing blue-green algae, pondweed and aquatic plant growth at drinking water treatment works.
Costs incurred and anticipated in addressing blue-green algae, pondweed and aquatic plant growth at drinking water treatment works.
Larne wastewater catchment capacity, development commitments, planning consultation responses, hydraulic modelling and environmental risk.
Larne wastewater catchment capacity, development commitments, planning consultation responses, hydraulic modelling and environmental risk.
Request for a list of all the FOIs/EIRs sent to NI Water. Going back to 2005.
Request for a list of all the FOIs/EIRs sent to NI Water. It would be really helpful to have a spreadsheet with dates of the FOIs/EIRs, request detail and outcome,…
The Annual Land Disposal Return 2026/27, identifying land proposed for disposal and associated financial information. Consultation from the Utility Regulator concerning proposed disclosure.
The locations of drinking water reservoirs across Northern Ireland, records demonstrating each reservoir level since 1 November 2025, and confirmation of whether NI Water provides water to, or receives water from, Irish Water.
Requested information on the costs associated with abstracting and treating drinking water at NI Water treatment works supplied by Lough Neagh or the River Bann, together with comparative costs for other water treatment works in Northern Ireland.
Requested information on the costs associated with abstracting and treating drinking water at NI Water treatment works supplied by Lough Neagh or the River Bann, together with comparative costs for…