Though the Thames water website gives the impression there is a leak on Dunoon, I don't think this is accurate. The works on Dunoon are to fix the electricity supply and no water is involved. There is however a leak at the top of Hengrave as well as the burst water main on Devonshire. Also Gabriel St, Brockley Rise...

The area's water mains clearly need replacing. The patch and mend approach must be costing a lot more over the years.