Abstract: The invention described herein contains two aspects, usable together or separately, that address the needs in the art described above, namely a first aspect that relates to the provision of a transportable water purification system that can be contained on a passenger transport vehicle, and that can use, but does not require, continuous, real-time monitoring, and a second aspect that relates to the use of UV purification of the water as it is uploaded to the passenger transport vehicle after a single pass through the UV chamber.

Abstract: Water-treatment systems and techniques are addressed. These systems and techniques contemplate monitoring water-quality-related information and creating residual disinfectant in recirculating water loops. Such circulating residuals also may help control biofilm otherwise likely to be present in the conduits and other equipment through which the water passes. Heaters may be employed as parts of the systems, and pressure differentials may be exploited to control water flow. Principally for use on-board aircraft operable at substantial altitude, the systems and methods may nevertheless be utilized in other vehicles or vessels or otherwise as appropriate or desired.