icosawater people tending flowers

Open Water & MOSL

Open water

Open Water is the name given to the programme set up by UK Government to open the water retail market for businesses, charity and public sector customers in England in April 2017.

The Open Water programme is being led by three partner organisations, Ofwat, Defra and MOSL, working with existing water companies across England, Scotland and Wales, as well as companies who wish to become a licensed retailer once the market opens.

Open Water Website


MOSL is the market operator for the non-household water market in England. They support the Open Water programme by working with Defra and Ofwat on behalf of their members.

MOSL’s role is to deliver the operational capability needed to support the efficient operation of the new market.

MOSL Website