Distribution input per person
275 l/person/day
Put into the network per person served, before losses or billing.
Water utility
South West Water
Serves Devon and Cornwall — a small resident population, a very long coastline requiring extensive wastewater infrastructure, and a summer population several times the winter one.
How this company performs
Reported to the Environment Agency for the 2023-24 and 2024-25 regulatory years, alongside the England figure for the same year.
Leakage per person
46.8 l/person/day
Lost from the network, expressed per person served.
Leakage as a share of distribution input
17.0%
The same losses as a share of everything put into distribution.
Leakage per property
97.6 l/property/day
The same losses normalised by connected property instead.
Household water use per person
153 l/person/day
Used in the home per person per day, excluding leakage.
Household metering
83.3%
Households billed on a measured tariff.
Non-household metering
96.2%
Business customers on a measured tariff, excluding empty properties.
The company
- Ownership
- Private
- Population served
- 1.8 million
- Services
- Water and wastewater
- Regulated by
- Ofwat, DWI, Environment Agency
Service area: South West Water service area.
What Hydrionis does not hold for this company
These profiles cover water resources performance only. Hydrionis holds no treatment works, reservoir or network asset records for South West Water, no pollution incidents or enforcement history, no capital investment programme, and no wastewater or storm overflow performance — none of which is published in the return these figures come from.
The longer leakage record exists: Ofwat holds company leakage back to 1992. It is not held here because ofwat.gov.uk refuses automated requests, and Hydrionis publishes what it can retrieve through its governed ingestion runner rather than what it can retype.
Also held for this company: leakage.
Where these figures come from
ReportedHigh confidence2024
Source: EA water resources — Analysis of the water industry’s annual water resources performance. Licence: Open — attribution required (attribution required).
Method: As published by the Environment Agency: total water put into distribution divided by population served, for the April-to-March regulatory year.
Retrieved 25 August 2026.