How Do You Choose the Right Drinking Water?

Is tap water as safe and healthy as bottled water?

Tap water and bottled water are both regulated, but neither label alone tells you which is the better choice for your household. Start with the source and the available quality information. The U.S. Environmental Protection Agency (EPA) says community water systems must provide a Consumer Confidence Report each year by July 1. The report identifies the water source, regulated contaminants detected, potential health effects when a contaminant violates a health standard, and steps taken to address the issue.

Read your report for detected contaminants and any listed violations rather than treating every detection as proof of an immediate health risk. If you did not receive the report, contact your water supplier or look it up using the EPA’s Consumer Confidence Report tool. That check gives you a concrete starting point: a filter or different water source is worth considering when it addresses a specific issue, not just because its packaging sounds reassuring.

Bottled water has its own rules. The FDA regulates it as a food product and sets standards for identity, contaminant quality, and sanitary manufacturing. Some bottled water comes from municipal supplies; FDA notes that municipal water is usually treated before bottling. A U.S. Geological Survey study tested selected bottled-water samples and found contaminants across some samples, though none exceeded FDA quality standards. Those findings apply to the samples studied, not every brand or bottle. Bottled is an option, not a guarantee of greater safety.

Cost and convenience can change the decision. Minnesota’s health department reported a Minnesota comparison in which tap water averaged $0.0058 per gallon and the average 2019 wholesale price for domestic non-sparkling bottled water was $1.18 per gallon. Those are dated, location-specific figures, not a current price quote for every household. Bottled water can be useful during an emergency, after a public-system contamination notice, or when a private-well test identifies an untreated problem. The department also notes that bottled water may contain no fluoride or a different amount than municipal water, so check the label or contact the bottler if that matters to your household.

Does a water filter remove contaminants in my local water?

A water filter removes only the contaminants its specific product is designed and verified to reduce. “Filtered” is not a single treatment claim. Match the filter’s certification and stated contaminant reduction to the issue identified in your water report or test results.

For PFAS, the EPA describes granular activated carbon, ion exchange, and reverse osmosis as point-of-use approaches that can reduce these substances. The EPA advises checking for NSF/ANSI 53 or NSF/ANSI 58 certification and confirming the specific PFAS reduction claim in the certifier’s product directory. A standard number alone is not a reason to assume every model reduces every contaminant. The EPA also notes that current PFAS filter certification standards do not yet indicate removal to levels of its newer drinking-water standards.

Filters require upkeep. The EPA says filters must be replaced as directed to remain effective. Its typical system price ranges are $20–$1,000 for granular activated carbon and ion-exchange filters and $150–$1,000 for reverse-osmosis systems, excluding maintenance. These ranges are from the EPA’s cited guidance and are not a personalized quote; account for replacement parts and follow the manufacturer’s maintenance instructions when comparing total cost.

Reverse osmosis has a resource trade-off alongside its treatment potential. The EPA estimates the systems described waste about one gallon of water for every gallon treated. That estimate applies to the systems described in its guidance, not necessarily every product or installation. Compare that waste, upkeep, and upfront cost with the contaminant concern you are trying to address. If the report does not show a relevant concern and taste is the main issue, a simpler option may better fit your needs.

Is mineral water better for you than regular water?

Mineral water is not automatically better for your health than regular drinking water; its defining feature is mineral content, not a universal health advantage. The FDA defines mineral water as water from an underground source containing at least 250 parts per million total dissolved solids, with its minerals and trace elements coming from that source rather than being added later.

Mineral content can affect taste, but the amount you get from drinking water depends on the water itself and how much you drink. A National Academies review estimated that typical U.S. drinking water supplies about 3%–7% of recommended daily magnesium intake for a healthy person, with higher contributions possible where water has high magnesium levels. The same review estimated average public water could supply about 5%–10% of usual daily calcium intake, with higher contributions in hard water. These are estimates from the review, not a promise about any particular tap, bottled, or mineral water.

Use the label or local report to understand what is actually in the water. A mineral taste may be a preference, not evidence that one water type is healthier for everyone. The National Academies review emphasizes that mineral contributions vary substantially with local water composition and individual intake. If you are choosing between options, separate the questions: Does the water address a documented quality issue? Do you like its taste? Is its cost and upkeep workable?

A quick comparison keeps those questions in view:

Make the choice in order: check the local information, identify the problem you want to solve, then compare products or sources against that problem. This avoids paying for a treatment that does not match your water or buying bottled water on the assumption that the category itself guarantees better quality. This week, find your report or well-test results and write down one question it answers—and one question it does not.