Source: Environment Agency & Water Companies
Water Company Areas Map UK
Search any UK location to identify the water and sewerage company operational boundary covering a site.
What This Layer Shows
This layer maps the operational boundaries of water and sewerage companies across England, shown as shaded polygons. Each boundary indicates which company is responsible for water supply and wastewater services in that area.
It is the starting point for confirming who to contact for a formal connection and capacity assessment before servicing a new development.
Why It Matters
Water and sewerage capacity is a practical constraint for almost every development, and confirming which company serves a site is the first step before any formal capacity or connection enquiry. Developers and environmental consultants check this layer early in feasibility work.
How to Interpret the Map
Shaded boundary
Operational area of the water and sewerage company serving that region.
Planning and Development Implications
Confirming that adequate water and sewerage capacity exists — or can be provided — is standard due diligence before a planning application is submitted, and the relevant water company should be consulted formally rather than relying on mapped boundaries alone.
What to Do Next
- 1Identify the water and sewerage company serving the site.
- 2Contact that company to confirm formal connection and capacity requirements.
- 3Check the Treatment Works and Storm Overflows layers for the same site for the fuller picture.
This is general guidance, not professional or legal advice — confirm specifics with the relevant authority or a qualified professional.
Official Data Source
Data Freshness
Important Limitations
- Boundaries are for screening — confirm formal capacity and connection requirements with the relevant water company.
- This layer does not indicate current network capacity or connection cost.
- A very recent change to operational boundaries may not yet appear if source data has not been updated.
Common Use Cases
Property Developers
Identify the correct water company to approach for a capacity assessment.
Environmental Consultants
Scope water and sewerage infrastructure enquiries.
Planning Consultants
Advise on likely conditions relating to servicing.
Related Layers
Water company checks are commonly run alongside these related layers.
Frequently Asked Questions
What does the Water Company Areas layer show?
The operational boundary of the water and sewerage company responsible for supply and wastewater services in each area of England.
Why do developers check water company boundaries?
Knowing which water company serves a site is the first step to confirming formal connection and capacity requirements before submitting a planning application.
Does this show whether a site can connect to mains water and sewerage?
No, it shows which company serves the area. A formal capacity and connection assessment must be obtained directly from that water company.
How often are water company boundaries updated?
Data is sourced from Environment Agency and water company published datasets and is checked periodically as new extracts are published.
References and Methodology
Reviewed by the Maplify data & editorial team
Maplify displays official-source data for desktop screening and due diligence. We document where each dataset comes from, how it is processed, when it is checked and where its limitations matter.