So, did the water intake of hunter gatherers or our paleolithic forebears contain significant amounts of minerals or alkali? Is this worth accounting for when considering their diets? I've found it hard to find the composition of pristine rivers. The composition of mineral waters of the world are listed here http://mineralwaters.org/index.php Australian mineral waters ironically have almost no minerals due to the nature of the rocks they filter through and their ancient geological age- the minerals are long gone. Perrier http://mineralwaters.org/index.php?func=disp&parval=1953 Evian http://mineralwaters.org/index.php?func=disp&parval=923 Apollinaris http://mineralwaters.org/index.php?func=disp&parval=211