Kirkland Costco Signature Purified Water
40/100
Costco
Toxins: 2
Lab Tested: Yes
Microplastics: High
Contaminants
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Nitrate
High levels of nitrate in drinking water can cause methemoglobinemia, or "blue baby syndrome," in infants, a condition that reduces the blood’s ability to carry oxygen. Long-term exposure to elevated nitrate levels has been associated with an increased risk of certain cancers, thyroid dysfunction, and potential reproductive issues.
Total Trihalomethanes
These carcinogenic disinfection byproducts increase the risk of bladder cancer and may cause liver and kidney toxicity as well as reproductive harm.
Other
This category includes substances that might not be categorized as contaminants or essential minerals but can still be present in bottled water. These could include trace metals from packaging, water treatment, or environmental exposure, with varying impacts depending on their concentration.
Ingredient & Minerals
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