The regional water boards- formed by merging various local authority water companies- were created before privatisation. These efficiencies- a positive thing-were established long before the Chinese billionaires and US hedge funds piled in to make a quick buck.
The 1973 Act transferred powers and obligations to regional water authorities, but at an operational level (for much of England) the local sewerage function remained with local authorities well into the 1990's - well after privatisation. Local sewerage interfaced with local authority public health duties, highway drainage, and watercourse management, so it made sense for the local council to continue managing local sewerage, albeit under an agency or management contract basis. The water authorities primarily dealt with trunk sewers and sewage treatment works.
Renationalisation of the water companies cannot replicate the pre-privatisation structure because it doesn't exist any more and cannot be readily recreated.
In many areas there a similar distinction, with water supply and sewerage with different companies. I experienced it in Herts and it was pointless having the supplier rebill for the sewerage.
I'm not sure I understand your point. To me it makes perfect sense for Three Valleys (for example) to bill a customer for sewerage services provided by (say) Thames Water. It would be nonsense for Three Valleys and Thames Water to each send separate bills and collect separate payments. Not least when the sewerage charges are based on the metered volume of water supplied (increasingly the imposed method of charging)
Correct me if I'm wrong, but there isn't a national water infrastructure. Each area is largely independent. Up here my water comes from Kielder, comes through pipes to my house, and goes off to sewerage; all elements are owned by NWL.
Agreed. That is part of the problem, there is a failure to provide and/or utilise a national infrastructure to better manage water supply and the impact of water abstraction on the environment.
But equally the electricity distribution system is split between a national distribution grid and regional distribution with each regional area being largely independent (although ownership changes have reduced that independence)
There's no scope for competition in the same way as gas/electric as there's no duopoly of supply. It's not like Dwr Cymru can feed water into the system up here to offer me a cheaper price.
Neither does Robin Hood Energy feed electricity into the grid in Nottingham for me to use here, yet they are able to offer me a cheaper price and better customer service, which is why I use them rather than EDF who would be my 'regional' supplier.
If the gas and electricty markets can work with a wide range of suppliers acting as the customer-facing company whilst a third-party looks after putting stuff into the pipes and cables, then the same model can work for water.
The privatisation- as with the railways and, later, Royal Mail- was all about the Tories selling off the family silver for pennies in a fire sale so they could use the proceeds to fund tax cuts for the rich.
Well that's just a political view that I don't have a great deal of interest in. Other than perhaps to note that the chief architect of the Royal Mail privatisation was a LibDem.