Market Maps

Please note that our market maps are continuously updated and improved. To provide feedback, please email performance@mosl.co.uk.

Catchment and River Health map

This interactive map shows the Ecological Health Status for each of the 101 Surface Water Management Catchments (SWMCs) across England along with Water Company operational boundaries.

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Customer meter reads by postal sector map

This interactive map presents a view of NHH customer meter reads by total valid NHH meter reads water for each of the 9,000+ postal sectors in England and Wales and also displays wholesaler water supply area boundaries.

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Drought Restrictions map

This map links Water Resource Zones (WRZs) and postal sectors to Drought Restriction status provided by each water company and updated weekly.

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Long Unread Meters (LUMs) by postal sector map

This map shows the percentage of non-household long unread water meters within each postal sector.

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Metered SPIDs by water wholesaler map

This map provides a view of the percentage of non-household water Supply Point IDs (SPIDs) with at least one active NHH meter in each of Ofwat's wholesaler regions.

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Remote meter reads by postal sector map

This interactive map presents a view of NHH remote meter reads by total valid NHH meter reads water for each of the 9,000+ postal sectors in England and Wales and also displays wholesaler water supply area boundaries.

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Sewerage switching by wholesaler region map

This map shows switches per 1000 Sewerage SPIDs in each of Ofwat’s Wholesaler Supply Boundaries.

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Trading party location map

Here you will find a map view of trading party locations based, categorised as either wholesaler, retailer or retailer - self-supply.

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Water meters by postal sector map

This map provides a view of the number of active non-household water meters within each postal sector.

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Water switching by wholesaler region map

This map shows switches per 1000 Water SPIDs in each of Ofwat’s Wholesaler Supply Boundaries.

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Water consumption by postal sector map

This searchable map presents a colour scale view of the levels of water consumed by non-household supply points for each of the 9,000+ postal sectors in England and Wales.

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Water Body and meter map

This interactive map shows Water Bodies across England coloured depending on the number of non-household water meters, alongside Water Company operational boundaries.

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Water Resource Planning Regions map

Boundaries, names and links to website for the five Water Resource Planning regions, as well as Natural Resource Wales.

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Water Resource Zones (WRZs) map

Boundaries, names and Water Resource Management Plan 19 (WRMP19) water deficit Dry Year Annual Average (DYAA) categories for the 133 water resource zones in England and Wales.

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Water scarcity by postal sector map

This map combines the following spatial data: Postal Sectors; Water Resource Zones (WRZs); Enviroment Agency (EA) Water Bodies; WRZ Water Deficit Designations (High/Medium/Low); EA Water Stress Designations by Water Body (Seriously Water Stressed / Not Seriously Water Stressed); EA Abstraction Reliability; NRW Abstraction Reliability.

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Water Stress Areas map

Boundaries, names and Environment Agency (EA) designation (2021) for the 23 water stress areas in England.

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