Annual water statistics


Total water supplied, maximum daily demand and maximum monthly demand are measured in megalitres (millions of litres, Ml). Annual rainfall is measured in mm (millimetres). Length of mains pipes is measured in km (kilometres). Connections and supplied dwellings are in thousands. Water quality compliance is measured is expressed as percentages.

From 2019 onwards, figures are pro-rated for the whole year, but are based on the period January - September. Note in particularly that this means the annual rainfall stated from 2019 onwards does not match the annual rainfall recorded by Jersey Met for the calendar year.

Additional information is available in Jersey Water annual reports and annual water quality reports.


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Data Dictionary

Column Type Label Description
Year numeric
Total water supplied numeric
Maximum daily demand numeric
Maximum monthly demand numeric
Leakage (million litres/day) numeric
Annual rainfall numeric
Total length of service mains numeric
New mains laid numeric
Mains re-laid/re-lined numeric
New connections (net of disconnections) numeric
Additional dwelling units connected numeric
Total connections on supply numeric
Total dwelling units on supply numeric
Burst mains numeric
Live unmeasured supplies numeric
Live metered connections numeric
Total live connections numeric
Compliance with water quality parameters numeric

Additional Information

Field Value
Data last updated July 26, 2021
Metadata last updated February 21, 2020
Created February 21, 2020
Format text/csv
License Open Government Licence – Jersey v1.0
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