Because a modern diaphragm-type piezometer tip only requires a small change in fluid volume for pressure equalization, the conventional, large sand intake zone around the piezometer tip can be omitted, and the tip can be grouted in a borehole with cement–bentonite grout. This grouted-in installation method allows simpler and easier installation, accurate readings, fast response to changing formation pore-water pressures, installation in boreholes shared with other geotechnical instruments, and can save 10–75% on the installation cost of a piezometer. The grouted-in installation method can be used for most soil conditions provided that the grout is less permeable than the formation. A theoretical basis for the grouted-in installation method is presented with supporting laboratory and field data from the Syncrude Canada Ltd. oil sands mine. Key words : piezometer, grout, instrumentation, hydraulic conductivity, hydrodynamic time lag, oil sands.