The 2010 OECD Investment Policy Review contains a quite comprehensive assessment of Indonesia’s regulatory and investment policy. For those of you who areinvestment lawyers, Chapter 2 discusses in depth, Indonesia’s  implementation of international investment principles. Other aspects such as competition policy, infrastructure, and corporate governance were also addressed. A sneak peak of the book is available in Google Books . The book dedicate a sub chapter on water infrastructure (ch 5.6) and cited my newspaper Article (Indonesia Needs a Strong Water Services Law). The analysis on water related investment is not really in depth, but it agrees that vague laws and regulations could be a deterring factor for foreign investment in this sector. The book’s executive summary is available for a free download, but the complete hard and soft copy versions are not free.