UK water company Pennon said it has been trading in line with company expectations since the end of March.The water utility and waste management firm said South West Water is continuing its strong performance against the 2010-2015 regulatory contract. Viridor meanwhile has been trading in line with company forecasts."As advised earlier, this would be a transitional year for Viridor and the firm expects PBIT plus joint ventures in 2013/14 to be broadly similar to 2012/13. EfW plants are anticipated to deliver significant EBITDA growth starting from 2014/15," Pennon said in a statement.Earlier this week Pennon named Ian McAulay as Chief Executive of Viridor, starting September 9th 2013. Colin Drummond, the current Chief Executive of Viridor would retire and take up the non-executive Chairman role of Viridor.