England Water Company Performance Dataset

What this looks like

One real series from the dataset, and real rows from the head of its published extract. Neither is a mock-up: the rows below are the same rows, unchanged, that are in the file you would download.

Sample rows

12 of 108 rows Taken from the start of observations-utility-performance-uk-ea-water-resources.csv. These are sample rows, not the dataset.

Sample rows from the England Water Company Performance Dataset extract
`metric_id`	`subject_id`	`subject_kind`	`value`	`censored`	`censor_operator`	`censor_threshold`	`censor_limit`	`censor_reported`	`unit`	`period_start`	`period_end`	`period_kind`	`basis`	`confidence`	`source_id`	`source_ref`	`qualifier`	`superseded`	`retrieved`
distribution-input-per-capita	entity-utility-affinity-water	entity	236.7	—	—	—	—	—	l/person/day	2023-04-01	2023-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-affinity-water	entity	233.3	—	—	—	—	—	l/person/day	2024-04-01	2024-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-anglian-water	entity	227.4	—	—	—	—	—	l/person/day	2023-04-01	2023-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-anglian-water	entity	224.4	—	—	—	—	—	l/person/day	2024-04-01	2024-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-bristol-water	entity	216.6	—	—	—	—	—	l/person/day	2023-04-01	2023-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-bristol-water	entity	215.7	—	—	—	—	—	l/person/day	2024-04-01	2024-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-cambridge-water	entity	218.1	—	—	—	—	—	l/person/day	2023-04-01	2023-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-cambridge-water	entity	218.7	—	—	—	—	—	l/person/day	2024-04-01	2024-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-essex-and-suffolk-water	entity	218.5	—	—	—	—	—	l/person/day	2023-04-01	2023-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-essex-and-suffolk-water	entity	220.8	—	—	—	—	—	l/person/day	2024-04-01	2024-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-northumbrian-water	entity	250.9	—	—	—	—	—	l/person/day	2023-04-01	2023-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01
distribution-input-per-capita	entity-utility-northumbrian-water	entity	246.9	—	—	—	—	—	l/person/day	2024-04-01	2024-12-31	year	reported	high	uk-ea-water-resources	—	—	—	2026-10-01

Download these rows as CSV — the same twelve, with the column header, for testing a loader before committing to the full file.

Methodology

Collected from the Environment Agency’s annual analysis of the water industry’s water resources performance, published on GOV.UK under the Open Government Licence. Figures are taken as the regulator publishes them, from the company-reported water balance, for the regulatory year running April to March. The report gives no captions or stable table order and restates its headings between editions, so tables are matched on heading text against an explicit list and anything unrecognised is skipped and reported rather than guessed at. Several measures are printed twice at different precision within one edition; those are reconciled to the finer printing where they agree after rounding, and left unresolved where they do not.

What this dataset cannot tell you

Read before relying on these figures

Two regulatory years only. The Environment Agency has published two editions of this report, so this is a change rather than a trend: a single year-on-year movement can be weather, a revised water balance or a change in what the regulator asks for. It does not meet the three-indicators-over-five-years threshold a composite utility index would require, and no index is published from it.
Ofwat holds English company leakage back to 1992 — a far longer series. It is absent because ofwat.gov.uk refuses automated requests, not because its licence forbids reuse. Hydrionis publishes what its governed collection can retrieve rather than what could be retyped.
Leakage as a share of distribution input is not non-revenue water. Non-revenue water also counts apparent losses — meter under-registration, unauthorised consumption, data error — and unbilled authorised use such as firefighting. The two are routinely confused and differ materially.
Figures use the English regulatory year running April to March. They are not comparable with international non-revenue water percentages, which use a different denominator, nor with the French linear leakage index and network efficiency indicators Hydrionis also holds, which normalise by network length rather than by property or person.
Leakage normalised by person or property reflects household size, network density, pipe age, material, pressure and ground conditions as much as management. It ranks circumstances as well as performance, and Hydrionis publishes no league table from it.

Coverage

Subjects	Appointed water companies in England, plus the England-wide figure — 18 held
Period	2023–2024
Units	%, l/person/day, l/property/day
Update cadence	Annually
Identifier	`england-utility-performance` v1.0.0

Fields

Data dictionary →

Every metric this dataset carries, with the unit it is stored in and the geography level it is reported at. Full definitions are in the data dictionary.

Identifier	Field	Unit	Reported at
`leakage-per-person`	Leakage per person Leakage divided by the resident population the company supplies, expressed per person per day.	l/person/day	utility-area
`leakage-share-of-input`	Leakage as a share of distribution input Leakage expressed as a percentage of the water the company put into its distribution system.	%	utility-area
`leakage-per-property`	Leakage per property Leakage divided by the number of connected properties.	l/property/day	utility-area
`distribution-input-per-capita`	Distribution input per person Total water put into the distribution system divided by the population served, per person per day.	l/person/day	utility-area
`household-consumption-per-capita`	Household water use per person Average volume of water used per person per day in the home.	l/person/day	utility-area, country
`household-metering`	Household metering Share of household customers billed on a measured rather than an unmeasured tariff.	%	utility-area
`non-household-metering`	Non-household metering Share of non-household customers billed on a measured tariff, excluding void properties.	%	utility-area

Rights and access

Licence position

Open with attribution. Derivative use true; redistribution true; commercial reuse true.

Permitted uses

Public display
Derived analysis
API delivery
Bulk download
Commercial use

Available to: Public, Developer, Research, Professional, Enterprise. These follow from the rights of the contributing publishers, not from a Hydrionis pricing decision — no access tier can widen what a publisher withheld.

Contributing sources

Environment Agency — Analysis of the water industry’s annual water resources performance (Open Government Licence v3.0)

Attribution and citation

Cite and reuse →

Two different obligations, deliberately kept apart. One is a condition of somebody else's licence; the other is a request Hydrionis has no standing to enforce.

Attribution you are required to give

These are conditions of the licences the underlying data is published under. They are obligations to the publishers, not to Hydrionis, and they apply to you directly whether or not you mention Hydrionis at all.

Contains public sector information licensed under the Open Government Licence v3.0.

Environment Agency — Open Government Licence v3.0 (licence text)

Suggested citation for Hydrionis

Hydrionis (2026), England Water Company Performance Dataset, version 1.0.0, accessed 2026-10-05, hydrionis.com/data/datasets/england-utility-performance/

Cite Hydrionis where you rely on the compilation, the normalisation, the eligibility judgements or a chart. Where you use an unmodified published value, the publisher’s attribution is the one that is required; crediting Hydrionis as well is welcome and is not something Hydrionis can require of you.

Recommended, not required. Hydrionis does not claim rights over unmodified public data it relayed, and doing arithmetic on somebody else’s measurements does not make them Hydrionis’s. Cite the version and the access date: England Water Company Performance Dataset changes as publishers release and as methods are revised, and a citation without both cannot be checked later. Full guidance is on cite and reuse.

Changelog

Version 1.0.0 — 2026-08-25

First release. English utilities move from a single leakage figure to eight indicators.

Additions

Leakage per person, per property and as a share of distribution input.
Distribution input per person, per-capita consumption, household and non-household metering.

Use this data

Download utility-performance observations from EA water resources (108 rows) (CSV)
Download leakage observations from EA water resources (90 rows) (CSV)
Download sector-use observations from EA water resources (36 rows) (CSV)
Machine-readable JSON /api/v1/datasets/england-utility-performance.json
How to cite this, and who you must credit
How these figures were produced
Request this at a different scale, format or geography

Every bulk extract ships with a companion metadata file carrying this dataset’s version, its sources, their licences, the attribution you are required to give and the suggested citation — so the terms travel with the file rather than staying on this page.

About this data

The fields a professional user needs to judge whether this is fit for a particular purpose. Deliberately not a score.

About this data

Everything below is a property of the data rather than a rating of it. There is deliberately no single confidence score: how much a gap matters depends on what you are about to do with the series, and only you know that.

Source	Environment Agency — Analysis of the water industry’s annual water resources performance · Open Government Licence v3.0
How the values came to exist	Mixed across the series — the basis is recorded on every individual value.
Period held	2023–2024
Known gaps	Two regulatory years only. The Environment Agency has published two editions of this report, so this is a change rather than a trend: a single year-on-year movement can be weather, a revised water balance or a change in what the regulator asks for. It does not meet the three-indicators-over-five-years threshold a composite utility index would require, and no index is published from it. Ofwat holds English company leakage back to 1992 — a far longer series. It is absent because ofwat.gov.uk refuses automated requests, not because its licence forbids reuse. Hydrionis publishes what its governed collection can retrieve rather than what could be retyped. Leakage as a share of distribution input is not non-revenue water. Non-revenue water also counts apparent losses — meter under-registration, unauthorised consumption, data error — and unbilled authorised use such as firefighting. The two are routinely confused and differ materially.
Continuity	Version 1.0.0, released 2026-08-25. 1 recorded version; breaking changes and corrections are listed in the changelog above.
Last read from the publisher	2026-10-01 · publisher updates annually
Redistribution	Permitted by the upstream licences
Commercial reuse	Permitted by the upstream licences. No Hydrionis access tier can widen this.
Methodology	How this was produced