Dwr Cymru / Welsh Water

Scope and Content

Misc deeds re Dwr Cymru / Welsh Water

Administrative / Biographical History

Before the 1973 restructuring of the industry, water and sanitation services were provided by water undertakings and sewage disposal authorities. Until the 1950s over a thousand water undertakings existed with administrative boundaries similar to those of local government boundaries. By the early 1970s their number had been reduced to 198 of which 64 were run by individual local government authorities, 101 by joint boards and 33 privately owned water companies, some of which date back to the Victorian era. At the same time there were over 1,300 sewerage and sewage disposal authorities, most of them run by individual local government authorities. Dwr Cymru Welsh Water (DCWW) is a company which supplies drinking water and wastewater services in Wales and parts of England. It is regulated under the Water Industry Act 1991 as amended by the Water Act 2014. Welsh Water originated from the privatisation in 1989 of water supply and waste water arms of the Welsh Water Authority which itself had its origins in the Welsh National Water Development Authority that was created by the 1973 restructuring of the water industry in England and Wales. Welsh Water Authority was privatised by stock market flotation in 1989. It renamed itself Hyder in 1996 after taking over a local electricity company (SWALEC) and becoming a water and electricity multi-utility. In 1999 following the Windfall Tax Hyder got into financial difficulties which led to its breakup. Western Power Distribution purchased Hyder on 15 September 2000 with a view to acquiring its electricity distribution business, and rapidly sold off Hyder's other assets. Dwr Cymru Welsh Water was sold for £1 by WPD to Glas Cymru. Glas Cymru was created by Nigel Annett and Chris Jones in 2000, with the support of its first Chairman Lord Burns, for the sole purpose of acquiring and managing Dwr Cymru Welsh Water. After a process that took around 18 months, Glas Cymru successfully acquired Welsh Water from Western Power Distribution (a US owned electricity network company) in May 2001, financed by a £1.9 billion bond issue (thought to be the largest ever, non-government backed, Sterling corporate bond issue). Welsh Water provides an essential public service to the households, businesses and the environment in Wales. Glas Cymru is a company limited by guarantee; it has no shareholders and so its corporate governance functions are the responsibility of its Board, which has a majority of independent non-executive directors, and its members, around 70 individuals appointed following a process undertaken by an independent membership selection panel. Members are not representatives of outside stakeholder groups but rather are unpaid individuals whose duty is to promote the good running of the company, in the best interests of its customers.

Access Information

Cyfnod cau 84 mlynedd ar rai eitemau/84 year closure period on some items

Acquisition Information

Adnau preifat / Private deposit.


Os gwelwch yn dda archebwch y dogfenau gan ddefnyddio y rhif cyfeirnod amgen (lle ddarperidd) / Please order documents using the alternative reference number (where provided)

Other Finding Aids

Mae copiau clawr caled o`r catalogau ar gael yn Archifdy Ynys Môn ac yn y Gofrestr Cenedlaethol Archifau. Polisi Gwasanaeth Archifdy Ynys Môn yw catalogio yn iaith y ddogfen./Hard copies of the catalogue are available at Archifau Ynys Môn / Anglesey Archivesand the National Register of Archives. It is the policy of Gwasanaeth Archifau Ynys Môn / Anglesey Archives to catalogue in the language of the document.

Physical Characteristics and/or Technical Requirements

Cyflwr da /Good condition

Archivist's Note

Helen Lewis for Anglesey Archives

Appraisal Information

Mae'r holl gofnodiadau sy'n cydymffurfio â pholisi casglu Swyddfa Gofnodi Cyngor Sir Ynys Môn wedi eu cadw /All records which meet the collection policy of the Anglesey Archives have been retained.


Ni ddisgwylir croniadau/Accruals are not expected


Permsision must first be obtained by Dwr Cymru / Welsh Water.