As you are probably aware the entire concept of a centralized filter only makes sense in an environment in which water delivery to “subscribers” is continuous. Otherwise, when pressure is removed (or seriously reduced) in the distribution piping there will be incursion of contaminants into the piping. This not only makes the centralized filter ineffective, but actually detrimental in that subscribers will never know when, or if, their water is safe. My impression is that intermittent water distribution is the single, most serious cause of “Montezuma’s Revenge” throughout Latin America. When I reviewed published literature on Honduras I only found one area that showed continuous water distribution. This is why I am going to be really hardnosed in insisting that Cristales show the capacity to provide continuous water distribution before I actually allow the creation of the centralized filter. Other than that we will probably want to provide individual slow-sand filters to homes in Cristales. This gives me cause to be interested in your manufacturing capacity in the Trujillo area. When I visited the Taller I got the feeling that it was moribund, and maybe on the way out in favor of your plastic extrusion capacity in-Country. Can you please bring me up to date on your experience of plastic vs. concrete??

Dean