The water is same as bottled but they are concerned about dirt in the pipe. The level of chlorine isn't dangerous and will abate.
If you fill your rain tank it will aerate out the chlorine since it is actually a gas.
Cesar Peneda will install a back up well for you for $100 and a submersible pump costs less than US$50 in the US.

When you drink well water you are drinking your neighbors septic stuff...

That depends on the septic system they have installed. In San Pedro, I believe you're required to use a 3 chamber system. Not sure what is required in CC, I used a 3 chamber system and the water should be clean when it comes out of the last chamber.

Ahahahahahahaha
Cheers!

The three compartment ones we use do indeed sometimes have an effluent that doesn't have a noticeable smell. The bio action goes fast here in rural areas. It is, of course, a soup of bacteria for the same reason. There is not enough oxygen in a normal septic to support enough air breathing bacteria to really clean the waste. That only occurs in outhouses here. When I moved to CC we had only outhouses. The first couple years we used a horizontal branch for an outhouse. The waste would disappear in an hour with no odor.
Natalie couldn't deal with that so Paul Steele built a open bottom box with toilet seat, which he moved everyday to different spot in the yard.We passed one day and Natalie was sitting there pants down so we stopped to chat. She wasn't too friendly. Paul had to build an outhouse next day.

"When you drink well water you are drinking your neighbors septic stuff..."

Our groundwater on CC is contaminated from mangrove roots.
Wells usually test OK for coliform which is the usual bio-indicator for septic effluent. If the pipe water goes off, your back up well will give you toilets that still flush and showers that run.You can drink beer until they fix it. This is Belize

I haven't been using mine long enough to know the results. I do know that there are sand purification filters that I could add to the system to further purify the effluent. And my house is on the north island and well away from any wells so I think I'm ok for a few years. Maybe by then we'll have a septic system over there and my worries will be over.

I installed a live well type aereator in my septic tank on Caye Caulker. I have a 2 compartment tank and it seems to help-no odors.