Contracts of the New River Company including specifications; quotations; contracts; tenders; accepted contracts; accepted stores contracts and contracts for building offices.

Financial records of the New River Company, including abstracts of accounts; balance sheets; ledgers; collectors ledgers; journals; disbursement books; cash books; revenue account books; audit books; bill book; bill cheque books; taxes and rates ledgers and accounts; landed estate accounts and meter rent books.

Staff records of the New River Company, including wages books; returns of employees and papers relating to staff appointments.

Records of the New River Company relating to water supply and distribution, including pipe order books; papers relating to works carried out; Engineer's papers; materials and fittings; papers relating to water supply; standpipe books; papers relating to Collectors; water rent account books and water rent rates; river and water gauges; pipe order books; river and water gauges; statistical returns and reports.

Property records of the New River Company, including rent and arrears books; rents payable registers; rent and acknowledgements books; ground rents registers; building estate insurances; fire insurances and leases.

Records of the New River Company which were separated from the main collection and used for exhibitions, including minutes; papers of the Surveyor; papers of the Engineer; negotiations for the supply of water; property papers; correspondence; reports; royal charters; agreements; legal papers; newspaper cuttings; papers relating to shares; contracts and specifications of works; and papers relating to staff.

Records of the Shadwell Waterworks Company, comprising financial material including rent books; cash books; receipt books; wage books; account books and some papers relating to works carried out.

Corporate records of the Staines Reservoir Joint Committee, including Committee meeting attendance books, proceedings books and minutes; legal papers relating to property, rating, water supply, stocks and shares, Parliamentary issues and contracts; correspondence and debenture stock volumes.

Financial records of the Staines Reservoir Joint Committee, including half-yearly accounts; journal; cash book; ledgers; register of wills and papers relating to payments to solicitors.

Records of the Staines Reservoir Joint Committee, comprising progress reports from the Engineer.

Corporate records of the Southwark and Vauxhall Water Company, including Board meeting minute books; Committee meeting minute books; Secretary's reports; correspondence and letter books; solicitor's accounts; legal papers; records relating to stocks and shares; registers of probates; mortgage records and contracts records.

Financial records of the Southwark and Vauxhall Water Company, including accounts; ledgers; journals; cash books; revenue ledgers; Collector's accounts; bankers books; disbursement books; and building supply accounts.

Staff records of the Southwark and Vauxhall Water Company, including wages books; expenses books; time books and applications, testimonials and correspondence.

Records of the Southwark and Vauxhall Water Company relating to water supply and distribution, including Engineers' report books; Supervisors' report books; service pipe agreements; meter agreements; trade supplies report books; constant supply orders; building supplies registers; meter supplies records; fire report books; engine and coal accounts; calculations and statistics; works diaries; mains supply map books and registers of complaints.

Purchase records of the Southwark and Vauxhall Water Company, including works stock book; volumes recording good returned to stores; and volumes recording coal use.

General records of the Southwark and Vauxhall Water Company, including newscuttings books; papers relating to a legal case; papers relating to stocks and papers relating to works.

Records of the South London Waterworks Company (later the Southwark and Vauxhall Water Company) including papers relating to shares; minutes of Director's meetings; stock certificates; papers relating to works and papers relating to a lawsuit.

Corporate records of the West Middlesex Waterworks Company, including Board of Directors minutes; General Assembly minutes; Committee minutes; letter books and correspondence; legal papers; records relating to stocks and shares; files on Royal Commissions on water supply; and general files of the Secretary.

Financial records of the West Middlesex Waterworks Company, including ledgers; cash books and journals.

Staff records of the West Middlesex Waterworks Company, comprising correspondence relating to the appointment of JA Christie.

Records of the West Middlesex Waterworks Company relating to water supply and distribution, including Engineer's reports; Engineer's diaries for technical matters and workmen's time; Inspectors' technical diaries; revenue survey volumes; water supply and distribution volumes and files.

Property records of the West Middlesex Waterworks Company including trade rental books and rental volumes.