公共供水系统越来越频繁地需要调查其他资金来源，以筹集扩建所需的资金。在全国各地的市政环境中，系统开发费用已成为首选的融资机制。近几年来，许多州都通过了监管此类资本费用的立法。作者调查了AWWA部分，并进行了研究，以记录美国最近的立法行动，以评估监管系统开发费用的州立法的种类和性质。这些发现生动地描绘了当前美国流行的一种趋势。如果继续下去，这一趋势几乎不能使我们更接近标准化的程序和基本规则，以供其他人在实施系统开发费用时考虑。包括2个参考文献，表1。

With increasing frequency, public water supply systems are having to investigate alternative funding sources to raise the capital needed for expansion. System development charges have surfaced as the financing mechanism of choice in municipal settings across the country. Legislation regulating such capital charges have been adopted in a surprising number of states in recent years. The author surveyed AWWA sections and conducted research to document recent legislative action in the United States to assess the variety and nature of state legislation regulating system development charges. The findings paint a vivid picture of a current trend prevalent in the United States. If continued, the trend does little to move us any closer to standardizing the procedures and ground rules for others to consider in implementing system development charges. Includes 2 references, table.