Essential Water Supply Considerations For Buying Property In The UK

I’ve been writing about UK property for long enough to notice that most buyers spend weeks obsessing over square footage, school catchment areas, and whether the kitchen has been refitted. What they almost never check is the water supply. That’s a problem, because the UK’s water system is under more pressure than most people realise. The government’s own National Framework for Water Resources confirms that society’s current use of water is unsustainable, with 15% of surface water bodies and 27% of groundwater bodies already at unsustainable levels of abstraction. That means the water coming out of your taps isn’t guaranteed to keep coming — not at the same pressure, not at the same cost, and in some areas, not at all during dry spells.

Here’s what you actually need to know.

If you’re looking at land or a property in a high-growth water zone, this isn’t a future problem — it’s a present-day factor that affects your property’s value, your insurance, and your daily life. I’d start by checking which water company serves the area and what their local demand forecast looks like. A property lawyer can also review any existing water rights or abstraction licences tied to the land, which is especially important for rural plots. For a broader look at what to check before buying land, this guide on key lot-buying considerations covers the full picture.

What water supply resilience actually means for your property

The term “water supply resilience” gets thrown around a lot, but here’s what it really means for you as a buyer. It’s not about whether water comes out of the tap today — it’s about whether it will still come out during a drought, after a population surge, or if the local water company loses an abstraction licence. The government’s National Framework explicitly states that if too much water is taken from the environment, supplies for all sectors become less resilient because water resources deplete quickly in dry weather and there is less dilution of pollutants.

What I tend to notice is that buyers assume mains water is a guarantee. It isn’t. The Environment Agency continues to identify where abstraction is unsustainable and where action will need to be taken, which may involve recovery of abstraction licence volumes or additional licence conditions. If you’re buying a property with a private borehole or a shared well, that risk is even more direct. For a deeper look at how water rights interact with land ownership, this article on understanding plot value explains the legal layers involved.

Why water supply should change where you buy

The population in England is set to increase to over 71 million people by 2055 — an increase of over 8 million people compared with the current population. More homes and people mean more water-using appliances, more water needed to generate energy and produce food, and a greater demand for water-using services. But that growth isn’t spread evenly. Look at the water company forecasts: Ruthamford Central in Anglian Water’s area is projected to see a 50.83% increase in household demand by 2055. Compare that to Hafren Dyfrdwy’s Llanfyllin zone, which is actually forecast to see a 2.07% decrease.

Here’s a scenario: you buy a new-build home in a high-growth zone like Affinity Water’s Stort area (26.81% projected increase). The developer got planning permission, so you assume everything is fine. But the local water company may need to impose temporary use bans (hosepipe bans) more frequently, or apply for new abstraction licences that face legal challenges from environmental groups. Your water bill could rise faster than the national average as the company invests in new infrastructure. Meanwhile, a similar property in a low-growth zone like Northumbrian Water’s Kielder area (9.81% increase) faces far less pressure.

My personal view is that water supply resilience should be on your checklist alongside flood risk and transport links. It’s one of those factors that barely registers during the buying process but becomes a daily annoyance once you’re living there. A financial advisor can help you model how rising water costs might affect your long-term budget, especially if you’re buying in a high-growth zone. For more on how regional differences affect land buying decisions, this size-based buying guide covers the practical trade-offs.

Where buyers get water supply wrong

I’ve seen the same mistakes come up again and again. Here are the three most common, and what to do instead.

Assuming mains water means unlimited supply

Mains water is not a magic wand. The pipes that bring water to your property are part of a regional network that is already under strain in many areas. The National Framework confirms that a further 6% of water bodies currently assessed as ‘good status’ could deteriorate unless action is taken. That means even areas with adequate supply today could face restrictions within a decade. What goes wrong: buyers don’t check the local water company’s drought plan or demand forecast. The fix is straightforward — go to your water company’s website and look for their Water Resources Management Plan (WRMP24). It will tell you exactly what pressure their network is under and what they plan to do about it.

Ignoring private water supply risks

If the property has a private borehole, well, or spring, you need to understand the abstraction licence that governs it. The Environment Agency can modify or revoke licences where abstraction is unsustainable. What goes wrong: buyers assume a private supply is cheaper and more independent, but it comes with legal obligations and potential costs for testing, treatment, and maintenance. The fix: ask your solicitor to review the abstraction licence as part of the conveyancing process. Check whether it’s a time-limited licence or a permanent one, and whether there are any pending reviews by the Environment Agency.

Overlooking regional demand forecasts

Most buyers look at national statistics and assume they apply everywhere. They don’t. The difference between the highest-growth water zone (Ruthamford Central at 50.83%) and the lowest (Hafren Dyfrdwy’s Llanfyllin at -2.07%) is enormous. What goes wrong: you buy in a high-growth zone without factoring in future water costs or restrictions. The fix: before you make an offer, look up the water company for that postcode and find their WRMP24 demand forecast. If the number is above 20%, budget for higher bills and more frequent restrictions. A real estate lawyer can also flag any water-related covenants or easements on the property that might affect your rights.

→ Scroll right to see all columns

For a more detailed breakdown of how water supply fits into the broader land-buying process, this guide on multi-generational plots covers the long-term planning angle.

Writing about topics like this takes real time and research. If you buy something through an Amazon link on this page, I may earn a small commission — at no extra cost to you. It’s one of the things that makes it possible to keep BritWealth free to read. I only link to products that are genuinely relevant to the article.

How to check water supply before you buy: a practical guide

Here’s the step-by-step process I’d follow if I were buying a property today. These actions take about an hour total and could save you thousands in unexpected costs.

Find your local water company and check their WRMP24 forecast

Every water company in England and Wales publishes a Water Resources Management Plan. This document contains the demand forecasts I’ve been referencing — the projected percentage increase in household water demand for each water zone by 2055. Go to the water company’s website, search for “WRMP24”, and find the table that lists water zones and demand forecasts. If the number for your zone is above 20%, treat it as a red flag. That means the local network is under significant pressure, and you should expect higher bills and more frequent restrictions over the life of your mortgage.

Check the property’s water source and any associated legal rights

If the property is on mains water, ask your solicitor to confirm that the connection is legal and that there are no outstanding charges or disputes. If the property has a private supply — borehole, well, or spring — you need to see the abstraction licence. Check whether it’s a full licence or a time-limited one. The Environment Agency can modify or revoke licences where abstraction is unsustainable, so a time-limited licence is a risk. Your solicitor should also check for any covenants or easements that affect water rights. A property lawyer can handle this part of the conveyancing.

Review the local drought plan and temporary use ban history

Water companies publish drought plans that explain what restrictions they can impose and under what conditions. Look for the section on temporary use bans (hosepipe bans) and emergency drought orders. If the company has imposed bans in two of the last five years, that’s a pattern. Also check whether the area has been subject to any recent abstraction licence reviews. The National Framework confirms that the Environment Agency continues to identify where abstraction is unsustainable, so areas that have already been flagged are more likely to face changes.

Factor future water costs into your budget

Water bills vary significantly by region and are likely to rise faster in high-growth zones as companies invest in infrastructure. Look at the current average water bill for the area and add a buffer. If the demand forecast is above 20%, I’d budget for annual increases of at least 5-7% above inflation over the next decade. A financial advisor can help you stress-test your budget against different scenarios. For a broader look at how to evaluate a property’s long-term costs, this strategies guide covers the full financial picture.

• 1
  Identify your water company

  Use the postcode to find the local water company. Check their WRMP24 for the demand forecast in your specific water zone.

• 2
  Verify the water source

  Confirm whether the property is on mains or private supply. For private supplies, review the abstraction licence and any pending Environment Agency reviews.

• 3
  Review the drought plan

  Check the water company’s drought plan for temporary use ban history and emergency measures. Look for patterns of restrictions.

• 4
  Budget for rising costs

  Factor in higher water bills in high-growth zones. Use the demand forecast to estimate future costs and stress-test your budget.

Water supply isn’t the most exciting part of buying a property, but it’s one of the most consequential. The difference between a 50% demand increase zone and a stable one could mean thousands of pounds in higher bills and years of frustration during dry summers. My advice: check the WRMP24 forecast before you make an offer, review the abstraction licence if there’s a private supply, and factor future water costs into your budget. If this was useful, you might also want to read Ditch the Dream House: Build Your Brit Property Empire From Scratch — Lot Buying Secrets Revealed.

Sources and Further Reading

How to Choose a Private Orchard Home Plot in the UK — Covers water access considerations for rural and semi-rural plots, including private supply options.

Tips for Buying a Residential Lot in the UK With Favorable Mortgage Rates — Explains how water supply and other site factors affect mortgage eligibility and terms.

National Framework for Water Resources 2025: Current and Future Pressures on Water Resources. UK Government, 2025.

Addleshaw Goddard Insights Briefings. Addleshaw Goddard LLP, 2025.