Ligot, I just noticed your post from the summer. Clean spring water is available from a cistern at the lighthouse on Culebrita. The valve is on the northeast corner of the building. There is usually a hose that runs down to the beach. Let it run for a minute to wash out spiders and scorpions. If you have a hose onboard, you can connect yours to it and fill directly to the boat's deck fills. If not, you'll need jerry cans. Either way, the water will gravity feed quickly. (Sort of similar to Green Cay in the Bahamas, if you've been.) There's a meter at the hose fitting. It's 15 cents per gallon. You need to leave payment in the coffee can that's there. (Honor system, make your own change - sometimes tough because of the multiple currencies.) They come from Fajardo weekly to collect. Good luck.