在亚利桑那州凤凰城的野外条件下，研究了超低容量（ULV）马桶固定装置的性能。对两个住宅小区进行了比较，一个使用传统厕所设备，另一个使用ULV设备。该研究评估了ULV固定装置所提供的节水和废水流量减少、它们对排水和下水道运输的影响，以及它们与传统固定装置相比的内部性能和用户接受度。包括14个参考资料、图表、表格和照片。

The performance of ultra-low-volume (ULV) toilet fixtures was studied under field conditions in Phoenix, Arizona. Two residential subdivisions were compared, one utilizing conventional toilet fixtures and one using ULV fixtures. The study evaluated water savings and wastewater flow reduction provided by the ULV fixtures, their effect on drainage and sewer transport, and their in-house performance and acceptance by users compared with their conventional counterparts. Includes 14 references, figure, tables, photos.