Wessex Water Services Limited, known as Wessex Water, is a water supply and sewerage utility company serving an area of South West England, covering 10,000 square kilometres including Bristol, most of Dorset, Somerset and Wiltshire and parts of Gloucestershire and Hampshire. Wessex Water supplies 1.3 million people with around 285 million litres of water a day. It is regulated under the Water Industry Act 1991. In 2016, the company had about 2,100 employees. Wessex Water is owned by the Malaysian power company YTL Corporation. Its headquarters are on the outskirts of Bath in Claverton Down, in a modern energy-efficient building by Bennetts Associates and Buro Happold. History The company originated as the Wessex Water Authority, one of ten regional water authorities established by the Water Act 1973 which were privatised in 1989. Wessex Water Services Limited was purchased by American company Enron in 1998 for $2.4 billion and placed in a newly formed subsidiary, Azurix. Following Enron's collapse, Wessex Water was sold to YTL Power International of Kuala Lumpur, Malaysia, in 2002. The water authority had acquired the assets and duties of a number of public sector and local authority water utilities: Bristol Avon River Authority Somerset River Authority Avon and Dorset River Authority (except the part of the area of that drains to the River Lim) Bath Corporation Dorset Water Board North Wilts Water Board South Wilts Water Board Wessex Water Board West Somerset Water Board West Wilts Water Board Bournemouth and District Water Company Bristol Waterworks Company Cholderton and District Water Company West Hampshire Water Company West Lulworth Water Undertaking Four people, three of them Wessex Water employees, were killed in an explosion at a company site in Avonmouth on 3 December 2020. Customer service Wessex Water achieved a score of 4.53 in Ofwat’s ‘Satisfaction by company’ survey 2012/13 (5 being ‘very satisfied’). Drinking water quality In 2013 Wessex Water's compliance with drinking water standards exceeded 99.9% and the company maintained 100% compliance with sewage treatment discharge consents. Leakage In both 2011/12 and 2012/13 the company's leakage figure was 69 million litres per day, compared to a yearly average of 73 million litres per day between 2005–10. Carbon footprint Wessex Water's greenhouse gas emissions totalled 119 kilotonnes of CO2 equivalent in 2018/19, compared to 149 kilotonnes of CO2 equivalent in 2011/12 and 159 kilotonnes in 2012/13. Reservoirs and lakes The company owns and manages several reservoirs including Blashford