Customers should be protected from paying more than is necessary for maintaining national water infrastructure, and the price review is an important part of doing this. Some evidence suggests that previous determinations have not been sufficient, at least for some companies, to keep up maintenance and stakeholders have suggested a number of reasonable ways to improve the system, such as better ways of calculating expenditure allowances and developing a system that allows determinations to be challenged. However the price review is unlikely to be the sole, or maybe even the main culprit for low overall levels of investment: an irresponsible culture has developed amongst all actors to keep bills low, and customers and the environment are now paying the price. Bills will need to rise, which will be challenging when trust is dropping; government, regulators and water companies will need to ensure that this results in a better deal for consumers. (Conclusion, Paragraph 41)