Planning for bill increases

Find out why water bills are increasing, how much they could go up and how we can help if you're struggling to pay.


We are investing more than ever in our services. To help us deliver improvements, our charges will increase as of 1 April 2025.

We know that price rises are always unwelcome, so we can help with your water bill if you are struggling to pay.

Why are bills set to increase?

Over the next five years, we are embarking upon a major programme of work across our water and sewerage networks. Our plan for 2025-2030 sets out the improvements we are seeking to deliver for our customers and the environment. These include:

  • removing 1,550 tonnes of nutrients in our waterways to improve river and coastal water quality
  • reducing the operation of more than 100 storm overflows – harnessing traditional treatment solutions alongside nature-based solutions such as wetlands
  • rolling out innovative sewer monitors to predict problems in the network and real-time water quality monitoring for bathing waters
  • reducing leakage across our network by a further 20% (compared to 2019-20 levels).

To achieve this, our regulator, Ofwat, has approved £2.9 billion of new investment. Much of this investment is required to meet new standards and obligations that are coming into force, as well as more stretching targets that regulators are setting for the water industry from 2025 onwards. It also reflects customers’ and stakeholders’ views about what improvements should be prioritised, following extensive research.

The chart below shows the key areas where we are investing.

Other

£260m

Improving drinking water quality

£70m

Protecting water supplies

£130m

Maintaining our assets

£820m

Water pipes, sewers and treatment centres

£640m

River water quality

£990m

Delivering these improvements will affect customers’ bills, but our five-year plan does not include any investments that have already been funded. We are not asking customers to pay for the same investment twice.

How much could bills go up from 1 April 2025?

To help you plan, we have set out below the expected annual bills and monthly increase from 1 April, for a range of different household types.

These figures represent the expected changes for a set of typical households. Actual changes will vary from household to household.

Water only households

Household customer type

Annual bill

Increase per month

Metered - One-person household

£208

£2.55

(17.2%)

Metered - Two-person household

£307

£3.91

(18%)

Metered - Three-person household

£363

£4.47

(18.3%)

Metered - Four-person household

£425

£5.52

(18.5%)

Unmetered* - Low usage

£310

£4.40

(20.5%)

Unmetered* - Medium usage

£494

£7.08

(20.8%)

Unmetered* - High usage

£672

£9.68

(20.9%)

* Charges based on your property's rateable value

Sewerage only households

Household customer type

Annual bill

Increase per month

Metered - One-person household

£222

£3.28

(21.5%)

Metered - Two-person household

£307

£4.94

(23.9%)

Metered - Three-person household

£355

£5.88

(24.8%)

Metered - Four-person household

£408

£6.93

(25.6%)

Unmetered* - Low usage

£262

£4.74

(27.6%)

Unmetered* - Medium usage

£418

£7.63

(28.1%)

Unmetered* - High usage

£568

£10.42

(28.2%)

* Charges based on your property's rateable value

NB. These illustrations do not reflect the water bill increases for customers who receive their water from another provider. For customers that pay Wessex Water for their sewerage charges only, please seek further information for your new water charges, from your water provider.

Combined households

Household customer type

Annual bill

Increase per month

Metered - One-person household

£430

£5.82

(19.4%)

Metered - Two-person household

£614

£8.85

(20.9%)

Metered - Three-person household

£718

£10.56

(21.4%)

Metered - Four-person household

£833

£12.45

(21.9%)

Unmetered* - Low usage

£572

£9.13

(23.7%)

Unmetered* - Medium usage

£912

£14.71

(24%)

Unmetered* - High usage

£1,240

£20.10

(24.1%)

* Charges based on your property's rateable value

Customers who are already on our Assist tariff will see their charges go up by less than inflation. Discounted rates for low-income pensioners and customers on our WaterSure Scheme, will continue to be available.

We will confirm our full charges for next year by the start of February 2025.

Bill changes explained

These increases are largely due to the increased investment requirements in our 2025-2030 plan, as well as the impact of inflation.

The chart below shows, for a typical two-person household, how much these different factors are adding to next year’s monthly bills.

Inflation

£1.40

Retail/billing costs

£0.80

Investment in sewerage services

£4.00

Investment in water supply services

£2.60

Larger households that use more water will see slightly higher overall increases compared to smaller households. This is because we have limited the increase in standing charges, which allows customers to save money by using less water and switching to a meter.

The increase in unmetered charges is also slightly higher than metered charges. This is because we have seen low-usage unmetered customers switch to a meter, which means the average consumption of unmetered customers has gone up. This adjustment helps ensure a fair charge for those still paying based on rateable value.

What if you are struggling to pay your bill?

We understand for some households an increase in your water bill could be hard to afford. If you are struggling, please don’t worry, we can help you with your bill.

How to make savings

You might also find you could make savings on your bill by having a meter fitted. The average saving made for customers switching to a meter is £125.

We can all save energy and money by using less hot water – find out how much you could save by using less water.