Follow-up for anyone who later checks out this thread:
We ended up
buying a couple of the blue five gallon jugs commonly used in office water coolers. We filled them with the hose at the
dock at Nanny Cay Marina where we stayed and stored them securely below
deck. It worked great.
At $15 each these bottles are not
cheap, but after the
cruise they can be given to anyone who (trusts your integrity and) has an account with one of those bottled water companies so the plastic goes back into the system of re-use. Nanny Cay
Hotel had such an account but would not take our bottles, presumably for lack of willingness to take the risk that the bottles had only been used for potable water.
Yes, a pricey alternative to gallon jugs, but not a lot of
money relative to the cost of chartering a boat. This is especially poignant in a country that lacks any recycling facilities and has tons of trash from the tourism industry to deal with. The trash produced on Tortola either ends up in the streets and then the ocean or gets collected and burned in an incinerator on the west end of the island.
It seems that the main issue for water quality on a charter boat is whether a previous charterer accidentally put
diesel into the water tank; I heard of boats where the tank water tasted of
diesel despite lacking a surface sheen.
Beyond that is the question of biological contamination esp in a warm climate. In the future if the water doesn't smell/taste of
fuel, I'll put a wee bit of bleach into the tanks knowing that the chlorine will off-gas and not be perceptible in a glass of water.
Another random
BVI logistics note: we rented bikes from Last Stop Sports in Road Town on Tortola for errands in/out of Road Town from Nanny Cay
Hotel. The bikes were of good quality and nice condition, and the company delivered them to the hotel which was super helpful.
Having bikes turned out to be great in terms of getting some exercise and having more fun getting around. Using bikes to haul groceries does require fairly large back-packs. For the most part drivers were respectful and the traffic not excessive. The roads (and sidewalks for that matter), predictably, aren't in the best of shape so it was good to have mountain bikes and not road bikes. Be aware that on some
parts of the island, there are some STEEP hills; this coming from a technical/altitude mountaineering guide.
We were surprised there weren't more sailors using bikes for errands and recommend it to anyone interested.