The present invention is a display apparatus for affixation to a shower or bath water supply piping or incorporated within a shower, or bath or faucet head, in an aesthetically pleasing format and comprised of fabrication materials e.g., a polymeric or metallic bases with chrome, brass white or colored finishes or combination of these finishes and materials of construction. The display apparatus includes a power generation, CPU or microprocessor, temperature sensor and/or water flow sensors, timing circuits and a display means. The display means can be an analog or digital display or combination of display means. Ergonomically placed buttons can be incorporated into the display means to change parameter units (e.g. metric to US), set alarm conditions (e.g. temperature over set point, time past a set point, flow rate set points). The display means must be able to provide sufficient lighting in shower conditions. In addition, the display means must be able to sustain capability in moist wet conditions. In the embodiment defined by the attached shower display apparatus, know piping joint technology will be used for installation into both new and presently installed shower systems. In the embodiment defined by the display means incorporate into the shower head the shower head/display assembly can also be installed in both new and presently installed shower systems.