Not true at all-its amazing the kinds of misinformation that floats around here. However, ALL the ground water from shallow wells (under 200 feet deep) at this end of the peninsula has a small salt content because of the porousness of the ground (karstic region) and the proximity of the ocean on three sides of the peninsula. Resultingly, you can taste the salt in the water when you brush your teeth (salt is evident at 17 parts per million parts of water) but it doesnt leave a sticky residue when you shower. It does play hell with the plumbing- we replace faucets at our hotel every couple of years because of severe corrosion, even to chrome-plated brass ones. And I suspect there may be a health benefit to this as salt will kill many unhealthy microbes that can be found in common groundwater.