Representatives of the Union of Orthodox Hebrew Congregations have met officials from a leading water company to discuss fears that new smart meters could lead to a breach of Shabbat.
An electrical expert has been brought in to determine whether new meters being installed in London by Thames Water contravene Jewish law, following concerns raised by members of the community over the past three months.
Until recently, meters clocked up the amount of water use through a mechanical process which posed no problem for Shabbat usage.
But the new digital meters being fitted in Hackney and Barnet operate on an electric current, posing the question of whether a person turning on a tap triggers electricity.