宾夕法尼亚州于1990年开始制定全州性战略，以解决小型供水系统的可行性问题。作者们一直在参与这个过程。该计划的许多部分已经到位，并为满足1996项安全饮用水法案修正案的能力发展和可承受性条款提供了基础。包括16个参考文献、表格和图表。

Pennsylvania began developing a statewide strategy to address viability of small water systems in 1990. The authors have been continuously involved in this process. Many pieces of the program are in place and provide a foundation for meeting capacity development and affordability provisions of the 1996 Safe Drinking Water Act amendments. Includes 16 references, tables, figures.