Dŵr Cymru Welsh Water

Water supply arrangements

Company Assets

Number of treatment works

61

Number of service reservoirs 

312

Number of water supply zones

76

Length of mains pipe (km)

25,277km

Population Served

Population Supplied

2,949,000

Number of local authorities

23

Water Supplied

Water Supplied (l/day)

832,988,000 

Percentage from surface sources

95%

Percentage of ground sources

4%

Percentage from mixed sources

1%

Area of supply

Blaenau Gwent, Bridgend, Caerphilly, Cardiff, Carmarthenshire, Ceredigion, Conwy, Denbighshire, Flintshire, Gwynedd, Herefordshire, County of, Isle of Anglesey, Merthyr Tydfil, Monmouthshire, Neath Port Talbot, Newport, Pembrokeshire, Powys, Rhondda Cynon Taf, Swansea, Torfaen, Vale of Glamorgan

Consumer Contacts

Informing Consumers

Company Figure

Total Number

Rate pet 1,000 population

2019

582

0.19

2020

493

0.16

2021

627

0.20

Industry Average

2021

9,913.96

1.22

Acceptability of water to consumers

Company Figure

Total Number

Rate pet 1,000 population

2019

9,167

2.96

2020

8,833

2.82

2021

8,027

2.55

Industry Average

2021

2,832.12

1.08

Complaints to the Drinking Water Inspectorate

A total of 3 consumers of Dŵr Cymru Welsh Water Services Ltd directly contacted DWI in 2021.

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