This report evaluates the project H2eco by Essex & Suffolk Water. It is the first in this series of water efficiency studies focusing on the installation of water-saving devices within domestic properties of Chelmsford, central Essex. Participants were equally divided into two focus groups of metered and unmetered households. A total of 17 customers attended the focus groups, for which they received a £40 incentive. Reasons for participation included free equipment, environmental concerns (e.g. saving water), and to reduce bills.