Register of Private Water Supplies in Northern Ireland

A geospatial register of private water supplies intended for human consumption in Northern Ireland, maintained by the Drinking Water Inspectorate. The dataset consists of 100m by 100m square polygons randomly placed around each registered supply location. It includes supplies to public or commercial premises or multiple dwellings, covering both currently and historically monitored sites.

Use Cases

• Public health risk mapping based on the location of private water supplies.
• Regulatory compliance monitoring for supplies to commercial premises.
• Environmental dashboard visualization using the provided polygon layer.
• Historical analysis of water supply monitoring trends.
• Spatial planning for water infrastructure and safety interventions.

Strengths

• Dataset is updated at least quarterly by the Drinking Water Inspectorate, indicating active maintenance.
• Cross-platform presence on uk_data and eu_open_data signals official importance and accessibility.
• Spatial data is provided as downloadable polygons for integration into mapping systems.

Limitations

• Conflicting 'most recent update' dates across sources (e.g., 27 September 2021, 31 December 2022, 1 April 2026) create uncertainty about freshness.
• No column names or row counts are provided, limiting understanding of the dataset's specific attributes.
• The 100m by 100m squares are randomly placed around supply points, which may reduce precise locational accuracy.

Provenance

Source

Drinking Water Inspectorate (DWI), Northern Ireland.

Collection Method

Collected as a statutory register required by The Private Water Supplies Regulations (Northern Ireland) 2017.

Freshness

Most recent update mentioned is 1 April 2026, but other sources cite older dates.

Geography

Northern Ireland, United Kingdom.