Water bills across Wales are set to rise - despite millions of customers in England seeing their monthly bills slashed.
Changes being put in place by water regulator Ofwat mean firms need to reduce water bills by an average of £50 by 2025.
Although some customers in England will see their bills drop each month, both of Wales' biggest suppliers are set to see prices rise rather than fall come April, according to industry body Water UK.
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Customers at Welsh Water/Dwr Cymru will see average bills rise by 1% to £451.
Rates at Hafren Dyfrdwy will also rise by 1% to £300.
The averages have been calculated by Water UK.
But in England some suppliers will slash bills significantly.
A household supplied by Northumbrian will see a drop of £85 on average, while Wessex customers will enjoy bills reduced by 8% - a drop of £40 a year.
According to Water UK, which represents and works with most major suppliers, the new rates for 2020-2021 will see the average bill across England and Wales drop from £413.33 to £396.60.
Wales only has two main water suppliers, whereas England has more than half a dozen - most of which are seeing reductions -meaning the average bill will decrease overall.
Some areas may still see a rise in line with improvement works in their town or city.
What suppliers said about the price increases:
A spokesman for Welsh Water said: “We are pleased that the rise in prices for 2019-20 is below the rate of inflation, for the 11 year in a row. This year’s price increase is part of a five-year regulatory determination by Ofwat – and over the course of that investment plan period we are targeting to keep price rises below inflation in each year.”
He told WalesOnline the increases planned for 2020-2021 were in line with the limits set by Ofwat and below the rate of inflation.
He added: "Alongside this, Welsh Water will continue to provide industry-leading support for 130,000 low income customers while also providing the best-possible level of customer service – recognised by the Institute of Customer Service last month when it ranked the company as the top utility in the UK, and as the first water company to ever be ranked in the Top 50 of the UK Customer Satisfaction Index."
Meanwhile, Severn Trent, the parent company for Hafren Dyfrdwy, said it disagrees that this year's rate change is an increase on last year.
While Water UK says bills averaged £294 from the supplier last year, Severn Trent claims the average combined bill totalled £312 last year, meaning the average cost will actually fall to £300 per household.