Fiji Water is not bad for you in any meaningful way when consumed normally. It meets FDA safety standards for bottled water and contains naturally occurring minerals that are, if anything, mildly beneficial. That said, there are a few nuances worth understanding, particularly around its plastic packaging and how you store it.
What’s Actually in Fiji Water
Fiji Water is artesian water sourced from an underground aquifer in the Fiji Islands. It’s naturally filtered through volcanic rock, which gives it a distinctive mineral profile. The water contains silica, magnesium, calcium, and small amounts of sodium. Of these, silica is the standout: Fiji Water has notably higher silica levels than most bottled waters.
The water has a slightly alkaline pH, typically around 7.7. That’s just above neutral (7.0), which is comparable to many other premium bottled waters. Despite marketing claims you may have seen about alkaline water, a pH of 7.7 won’t meaningfully change your body’s acid-base balance. Your kidneys handle that regardless of what you drink.
The Silica Question
Silica is the mineral Fiji Water is best known for, and it’s the one ingredient that may offer a genuine, if modest, health edge. Epidemiological studies have found that higher silica intake through drinking water is correlated with better performance on cognitive tests and a reduced risk of Alzheimer’s disease. The mechanism appears to involve aluminum: silica binds to aluminum in the body and reduces its bioavailability, and aluminum’s neurotoxicity is well established. French cohort data showed that aluminum in drinking water increased the risk of cognitive impairment specifically when silica levels were low.
This is interesting but not a reason to buy Fiji Water specifically. The research on silica and cognition is still limited, and you get silica from many foods, including oats, bananas, and green beans. Drinking Fiji Water won’t hurt, and the silica content is a nice bonus, but it’s not a medical intervention.
The Plastic Bottle Concern
This is where most of the legitimate concern about Fiji Water lives, and it applies equally to nearly every bottled water brand. Fiji Water is packaged exclusively in PET plastic (the kind marked with a “1” recycling symbol). PET is considered one of the safer food-grade plastics and does not contain BPA. But it’s not completely inert.
The main chemical of concern is antimony, a trace element used as a catalyst in manufacturing over 90% of PET plastic worldwide. A study tracking antimony levels in bottled water found concentrations starting at 0.195 parts per billion and rising to 0.226 ppb after just three months stored indoors at room temperature. For context, Japan’s maximum contaminant level for antimony in drinking water is 2 ppb, so these numbers are well below that threshold. The U.S. EPA limit is even higher at 6 ppb. At normal storage conditions, you’re looking at levels far below any regulatory concern.
Temperature matters, though. Heat is the single biggest factor driving antimony leaching from PET plastic. Leaving bottles in a hot car, in direct sunlight, or in warm storage for extended periods will increase those levels. UV radiation and time also play a role, but temperature dominates. The practical takeaway: store your Fiji Water (or any bottled water) somewhere cool and out of direct sunlight, and don’t let bottles sit for months in warm conditions.
There’s also the phthalate question. PET plastic is widely claimed not to contain phthalates, which are hormone-disrupting chemicals. That’s technically true of the raw material, but studies have detected phthalates in PET bottles that stored water for 10 weeks or longer. The levels are generally very low, but it reinforces the same point: don’t treat bottled water as a long-term storage product.
Microplastics in Bottled Water
Microplastic contamination is a concern across the entire bottled water industry, not just Fiji. A study analyzing multiple bottled water brands from Fiji (the country) found microplastic concentrations ranging from 0 to about 2.2 particles per liter, depending on the brand. Some brands tested at zero. For comparison, tap water and other drinking water sources in the same study showed similar ranges.
The health effects of ingesting microplastics at these low levels are still not fully understood. Current evidence suggests the amounts found in bottled water are unlikely to cause immediate harm, but this is an active area of research. If microplastics concern you, a home water filter with a fine enough rating can reduce your exposure more effectively than switching between bottled water brands.
How Fiji Water Compares to Tap Water
Municipal tap water in the United States is regulated by the EPA, which enforces limits on more than 90 contaminants and requires continuous monitoring. Bottled water, including Fiji, is regulated by the FDA under a different set of rules. The FDA requires bottled water companies to protect their sources, test their water, and follow safety protocols, but the testing frequency and public reporting requirements are generally less rigorous than what’s required for municipal water systems.
In most U.S. cities, tap water is perfectly safe and often tested more frequently than any bottled brand. Fiji Water isn’t “cleaner” than good municipal water in any guaranteed way. Where Fiji (and bottled water generally) can have an advantage is in areas where tap water quality is poor due to aging infrastructure or local contamination issues.
The Bottom Line on Safety
Fiji Water is a safe product when stored properly. The mineral content is harmless and possibly mildly beneficial. The real concerns, such as antimony leaching and microplastics, are tied to the PET plastic packaging and apply to virtually all bottled water, not Fiji specifically. If you enjoy the taste and don’t mind the price, drinking it regularly won’t harm your health. If you’re looking to minimize plastic-related chemical exposure, the simplest move is filtering your tap water at home and using a reusable glass or stainless steel bottle.