Only 30 percent of residents living in South Tarawa (the major population centre) own a flush toilet according to recent statistics. Those who do not, use the lagoon as their bathroom.
(It looks lovely, but....)
So, you can expect to see suspicious brown objects and other gross waste floating around in this body of water. This water never really gets washed out to sea, either, leaving the waste to float and causing a bad smell to permeate the island. Do not, under any circumstances, take a dip in this lagoon.
Some travelers say North Tarawa is safe to swim in. Even though the locals there also use the water as their toilet, the population is considerably smaller, so less waste gets in the water.
You won't be as in danger of seeing human waste in other bodies of water surrounding Kiribati, but you are at risk for getting pulled to sea by strong rip currents, particularly near the reef areas.
If you want to eat in Kiribati, you have few certifiably sanitary options. Many people subsist largely on rice to avoid illness developing from spoiled produce, which is scarce anyway, or bad meat.
Much of the food in the country is imported in cans or packaged form, so the quality leaves a bit to be desired. But travelers report that you can find the basics.
Fish is the prominent source of local food, but don't eat fish that comes out of the South Tarawa lagoon for obvious reasons.
You can find more Western-style eats at hotels like Marys and the Otintaai and Chinese food at a number of restaurants.
You'll want to boil all water when in Kiribati and thoroughly cook vegetables and peel all fruit.
All of that being said, Kiribati does have strict quarantine protocols for food, plants and animal products, all of which must be declared upon arrival.
Some illnesses to watch out for on Kiribati are mosquito-borne dengue fever, hepatitis A and ciguatera, a type of food poisoning sometimes caused by fish.
Mosquitoes flit about the island, and as insect repellent is not sold locally, bring your own (same goes for sunscreen).
Treat all cuts, bites or rashes immediately to avoid infection. If you do need medical attention, expect poor facilities. Anything beyond a basic ailment may require evacuation to a nearby country or your home country.
Pollution is high in Kiribati, partly because of poor sanitation and partly because nearly 85 percent of the locals smoke. In addition to human waste, you'll see dog waste and broken glass or metal on some beaches. No barefoot strolls on the shore for you.
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