Work etc. Act 1974 after the death at work of one of its workers. It was fined £300,000 with £61,000 prosecution costs. The incident occurred at its Coppermills Water Treatment Works in Walthamstow, London E17 in April 2010 when an excavator reversed over and killed the worker in a slow sand filter. The prosecution followed an investigation by the Health and Safety Executive. Leakage 2001–06 (RWE's ownership) Thames Water was repeatedly criticised for the amount of water that leaked from its pipes by the industry regulator Ofwat and was fined for this. In May 2006 the leakage was nearly per day and in June that year Thames Water missed its target for leakage reduction for the third year in a row. The Consumer Council for Water, a customers' group, accused Thames Water of continuing to miss its targets for the preceding five years. In July 2006, instead of a fine which would have gone "to the exchequer", the company was required to spend an extra £150 million on repairs. Since 2007 (Kemble's ownership) Thames Water has hit its Ofwat-agreed annual leakage-reduction target for each of the ten years running from 2006 to 2016. In 2006–07, the company stated that it had reduced its daily loss through leaks by to an average of per day. For 2009–10 the Ofwat-reported daily leakage was . In its price control determination for the period 2010 to 2015, Ofwat did not allow the funds needed to finance a significant further reduction in leakage and used the assumption that daily leakage would be in 2010–11 and from 2011 to 2012. In 2011–12, actual daily leakage was ; in 2012–13, ; in 2013–14, ; in 2014–2015, ; in 2015–2016, . The company has achieved these reductions by: The recent successes in meeting leakage targets have mitigated the earlier failures to meet targets. As a result, and in spite of a larger distribution network, Thames Water now leaks slightly less water than at privatisation in 1989, having reduced leakage from its network of water pipes by more than a third since its 2004 peak to its current lowest-ever level. and with an older network profile, Thames Water leaked 25.8% of supply, slightly less than Severn Trent at 27%. Thames Water leaked 25.1% of supply. In June 2018 regulators made Thames Water pay £65 million to customers among other problems because they failed to fix leaks. Pollution In the