From then on, it started the system of piping river water from even more inland to be infiltrated in the dune slacks. The river water sinks from the sand, filters by itself from unsafe pathogens, and replenishes the underground stocks with cleanse water. Rokin – November 1977 The Amsterdam canal https://mybrandingyards.com/the-ultimate-guide-to-water-slide-rental-katy-everything-you-need-to-know/