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Price limits between 2010 and 2015


On January 18, 2010, South West Water confirmed it would accept Ofwat's Final Determination of its business plan and price limits.

The following table illustrates the expected effect of this price limits in each year for metered and unmetered customers.

The 'K' factor is the maximum amount excluding inflation – the company is allowed to increase its tariffs and charges by in each year: 

K factors %2010/112011/122012/132013/142014/15
Water1.03.12.51.20.7
Sewerage1.03.62.51.41.5
Total                                                   1.13.42.51.31.1
Average bills2009-102010-112011-122012-132013-142014-15
Average annual bill for water£206£205£208£209£208£205
Average annual bill for sewerage£283£278£282£282£280£278
Average annual bill for water and sewerage£489£483£490£491£487£483
Typical metered bill£399£401£402£406£407£407
Typical unmetered bill£723£746£818£863£900£935
Note: These figures are based on base prices in 2009/10.


Your bill may be higher or lower than the average.

The exact size of your bill depends on how much water you use as a metered customer or the rateable value of your property if you are an unmeasured customer.

It can also depend on whether you receive both water and sewerage services from South West Water or not or whether you are entitled to a discount for surface water drainage.

You may wonder if the tariff charges are increasing every year how can the average household bill in the region fall by 2015.

This is because metered customers are using less water on average each year and approximately 80,000 households are forecast to switch to meters by 2015 reducing their bills by an average of £400 each.

Read more about charges in 2009/10.




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