Question: What local government council in southern England also contains the district council ward Leaversden?

Context paragraphs:
District Council of Rocky River: The District Council of Rocky River was a local government area in South Australia.  It came into existence on 1 May 1988 with the amalgamation of the District Council of Georgetown, District Council of Gladstone and District Council of Laura.  It had nine members divided amongst three wards (Georgetown, Gladstone and Laura), each returning three councillors.  It was relatively short-lived, as on 3 May 1997 it merged with the District Council of Jamestown and the District Council of Spalding to create the Northern Areas Council.  Its principal office was located in Gladstone.

West Berkshire Council: West Berkshire Council is the local authority of West Berkshire in Berkshire, England.  It is a unitary authority, having the powers of a non-metropolitan county and district council combined.  West Berkshire is divided into 30 wards, electing 52 councillors.  The council was created by the Local Government Act 1972 as the Newbury District Council and replaced five local authorities: Bradfield Rural District Council, Hungerford Rural District Council, Newbury Borough Council, Newbury Rural District Council and Wantage Rural District Council.  On 1 April 1998 it was renamed West Berkshire Council and since then has been a unitary authority, assuming the powers and functions of Berkshire County Council.  In the 2015 election the Conservatives won 48 out of 52 seats.  The next election to the authority will be in 2019.

Windsor and Maidenhead Borough Council: Windsor and Maidenhead Borough Council is the local authority of the Royal Borough of Windsor and Maidenhead in Berkshire, England.  It is a unitary authority council, having the powers of a non-metropolitan county and district council combined.  Windsor and Maidenhead is divided into 23 wards, electing 57 councillors.  The council was created by the Local Government Act 1972 and replaced six local authorities: Cookham Rural District Council, Eton Urban District Council, Eton Rural District Council, Maidenhead Borough Council, New Windsor Borough Council and Windsor Rural District Council.  Since 1 April 1998 it has been a unitary authority, assuming the powers and functions of Berkshire County Council.  The next election to the authority will be in 2015.

Hope Town District Council: The Hope Town District Council is a local government council in the Bahamas.  It is a third schedule district council located within the Abaco Islands of the northwest Bahamas.

District Council of Laura: The District Council of Laura was a local government area in South Australia.  It was created on 1 May 1932 with the amalgamation of the Corporate Town of Laura and the District Council of Booyoolie.  It reunited the whole cadastral Hundred of Booyoolie within the same district council, as had previously been the case when the Booyoolie council was first proclaimed in 1876.  The Laura merger had occurred after a much broader 1931 merger proposal, which would have seen the Corporate Town of Laura, District Council of Gladstone, Corporate Town of Gladstone and District Council of Caltowie merge into a drastically enlarged District Council of Booyoolie, was abandoned after meeting strong opposition from both the Laura and Gladstone communities.

Aberdare Urban District Council: Aberdare Urban District Council was a local authority in Aberdare, Wales.  It was created in 1894 as a result of the 1894 Local Government of England and Wales Act and the Aberdare Urban District Council election, 1894 saw the election of the first members of the authority.  The Council existed until 1973 and replaced the Aberdare Local Board of Health which had functioned since the 1840s.  Its boundaries were identical to those of the original parish of Aberdare.  Initially, the Council had fifteen members but this was increased to twenty in 1906, as a result of the increase in population.  There were five wards, namely Aberaman (also known as No. 5 Ward), Blaengwawr (also known as No. 4 Ward), Gadlys (also known as No. 2 Ward), Llwydcoed (also known as No. 1 Ward), and the Town Ward (also known as No. 3 Ward).

Wallingford Rural District: Wallingford Rural District, an administrative area in what was then Berkshire, now Oxfordshire area, in southern England was established in 1894, from the then Berkshire area within Wallingford Rural Sanitary Authority (the Oxfordshire area becoming Crowmarsh Rural District).  Wallingford Rural District Council provided many local government functions for the area around the town of Wallingford including Didcot, but not for the borough of Wallingford, which was covered by Wallingford Borough Council.  These functions included dealing with contagious diseases, and wartime evacuations and air raid precautions.  It also covered housing, water supply and sewage, and fire brigades.  The parishes included were Aston Tirrold, Aston Upthorpe, Brightwell-cum-Sotwell, Cholsey, Didcot, East Hagbourne, Little Wittenham, Long Wittenham, Moulsford, North Moreton, South Moreton and West Hagbourne.  In 1974 it became part of the district of South Oxfordshire, administered by South Oxfordshire District Council.

District Council of Hutt and Hill Rivers: The District Council of Hutt and Hill Rivers was a local government area in South Australia.  It was established on 30 July 1885 and included the entirety of the Hundred of Milne as well as the south half of the Hundred of Andrews.  It gained the Hundred of Hart in January 1888 following the passage of the "District Councils Act 1887".  The municipality had no township within its boundaries, so a council chambers was built at Bungaree; the building survives today and is used for tourist accommodation.  In 1909, a section was severed and added to the District Council of Snowtown.  It was abolished in 1935 following a Local Government Commission report that advocated cutting the number of municipalities in South Australia from 196 to 142, with Hutt and Hill Rivers being divided between the adjacent District Council of Spalding (Hundred of Andrews south portion), District Council of Clare (Hundred of Milne) and the remainder (Hundred of Hart) to the District Council of Blyth.

Three Rivers District: Three Rivers District Council is a local government based in Rickmansworth, Hertfordshire, in southern England.

Leavesden, Hertfordshire: Leavesden is a residential and commercial area in Hertfordshire, England, contiguous with the northern suburbs of Watford.  It lies within the M25 Motorway.  On its eastern side it is bounded by the M1 Motorway.  Leavesden is part of Abbots Langley civil parish and is also the name of a district council ward in Three Rivers District.  Leavesden Green is an adjoining residential community which lies partly in Three Rivers and partly in the Borough of Watford.

Supporting paragraphs: Leavesden, Hertfordshire Three Rivers District
Answer: Three Rivers District