You may be interested in a recent report produced by the Water Industry Forum entitled ‘Natural Capital Principles for the Water Industry’ available to download here: http://www.waterindustryforum.com/whatsnew/water-industry-forum-facilitates-best-practice-guide-on-natural-capital/.
The report is seen as a best practice guide for water companies and regulators to help design and apply Natural Capital type tools – ultimately with the aim of making more sustainable investment decisions and delivering better outcomes for water customers, society and the environment.