供水和卫生部门的公私合作（PPP）市场已经成熟 在过去的十年里，北美和全球范围内都发生了很大的变化。业主， 承包商和利益相关者（包括劳工组织、非政府组织） 各组织和公众）正在进行PPP安排，并取得了显著成效 更好地理解（并接受）可能出现的潜在好处和陷阱 通过私营部门参与水和废水基础设施的开发和 提供服务。这些安排越来越多地考虑更广泛的服务和服务 根据所服务的公用事业和社区的特殊需求定制的合同格式。 与任何快速增长的大型市场一样，结果喜忧参半，似乎并不简单 人物刻画。然而，PPP市场似乎毫无疑问已经成为一个新兴市场 在过去十年或更长的时间里，在北美和大部分发达国家被制度化 在可预见的未来，这一数字还会继续增长。与此同时，私营部门 发展中国家水和废水市场的财务参与度下降 在1997年至2001年期间，除了明显的例外情况外，基本上没有绝望地延长 向穷人，特别是农村社区的穷人提供必要的服务。

The water supply and sanitation sector's Public-Private Partnership (PPP) market has matured considerably across North America, and globally over the last decade. Owners, contractors and interested stakeholders (including labor organizations, non-governmental organizations, and the general public) are proceeding with PPP arrangements with considerably greater understanding (and acceptance) of the potential benefits and pitfalls that may arise through private sector involvement in water and wastewater infrastructure development and service delivery. These arrangements increasingly contemplate a broader range of services and contract forms tailored to the particular needs of the utilities and communities served. As with any large and rapidly growing market, outcomes are mixed and seemingly defy simple characterizations. However, there seems no question that the PPP market has become institutionalized in North America, and much of the developed world, over the last decade or more and will continue to grow for the foreseeable future. At the same time, private sector financial participation in the water and wastewater markets of the developing world declined between 1997 and 2001 and largely failed, with notable exceptions, to extend desperately needed services to the poor, particularly those in rural communities.