Barium in Drinking Water: Health Risks, Sources, and How to Remove It
Barium is an inorganic chemical element that can sometimes be found in drinking water systems. It is regulated as an inorganic contaminant under federal guidelines. The Environmental Protection Agency has set the Maximum Contaminant Level for barium at 2 mg/L.
Health Effects
Ingesting water with elevated levels of barium can result in negative health effects. The primary health concern associated with exposure to this contaminant is increased blood pressure. Keeping barium levels within the regulated limit helps prevent these cardiovascular impacts.
How Barium Gets Into Tap Water
Barium can enter drinking water supplies from several different sources. It occurs naturally in certain geological deposits and can dissolve into groundwater. Industrial processes, specifically mining and refining operations, are also common sources of this contaminant.
How to Remove Barium From Your Water
Several treatment methods are available to effectively remove barium from water supplies. These include ion exchange systems, reverse osmosis filtration, and lime softening. Utilizing these treatment methods can successfully lower barium concentrations to safe levels.
Should You Test Your Water?
You can check for the presence of barium by reviewing your local utility's annual Consumer Confidence Report or searching on WaterQ. Private well owners should have their water tested by a certified laboratory to verify barium levels. You can also look up your local water system on WaterQ or check the Barium data page for reported levels in your area.
Frequently Asked Questions
Is Barium dangerous in drinking water?
Barium can pose health concerns if it is present in drinking water above the regulatory limit. Specifically, exposure to elevated levels of barium has been linked to increased blood pressure. However, water that meets the federal standard of 2 mg/L is considered safe to drink.
How does Barium get into tap water?
Barium gets into tap water primarily through the erosion of natural underground deposits. It can also contaminate water sources through runoff or waste from mining and refining industries.
How can I remove Barium from my water?
You can remove barium from your water using treatment methods such as ion exchange, reverse osmosis, or lime softening.
Source: EPA National Primary Drinking Water Regulations and WaterQ National Database. For more contaminants, visit our contaminant library.
What actually removes heavy metals (mercury, cadmium, barium and others)
Reverse osmosis handles the whole group reliably, which makes it the simple answer when several metals show up at once. Some NSF/ANSI 53 carbon filters carry claims for specific metals such as mercury and cadmium — check the claim names on the performance data sheet rather than assuming a lead-rated filter covers the rest. A softener is a partial exception: ion exchange does capture barium reasonably well, though it does nothing for most of the others.
Works
- Reverse osmosis (NSF 58)The broadest removal available at home: arsenic, nitrate, fluoride, PFAS, TDS.
- Carbon certified for lead (NSF 53)The cheapest thing that genuinely removes lead, cysts and many VOCs.
Will not fix this
- Basic activated carbon (NSF 42)
- UV disinfection (NSF 55)
- Boiling Makes it worse — evaporation concentrates what's left behind.
Test before you buy.Heavy metals (mercury, cadmium, barium and others) can't be seen, tasted or smelled, and the right hardware depends on the concentration you actually have. A certified lab test costs a fraction of the wrong filtration system. Start with your local water quality report, and get a mail-in lab test if you're on a private well.
Options that carry the right certification
Ordered cheapest-adequate first. Prices are indicative bands and move often.
| Product | Certification | Upfront | Per year | |
|---|---|---|---|---|
| APEC ROES-50 EssenceUnder-sink | Built with WQA-certified components to NSF/ANSI 58.Catch:Needs an under-sink drain connection and a spare hole for the dedicated faucet. Strips minerals — some people dislike the flat taste. | $180–240 | $50–80 | Check price |
| AquaTru Countertop Reverse OsmosisCountertop | NSF/ANSI 42, 53, 58, 401 and P473 certified.Catch:Takes counter space and you refill a tank by hand. Wastes some water as brine, like all RO. | $400–500 | $80–130 | Check price |
| Brita Elite Pitcher FilterPitcher | NSF/ANSI 42 and 53 certified, including a lead reduction claim.Catch:No fluoride, nitrate or arsenic reduction. Not PFAS-rated. | $25–40 | $50–70 | Check price |
| iSpring RCC7AK 6-Stage ROUnder-sink | WQA Gold Seal certified to NSF/ANSI 58.Catch:The alkaline remineralization stage adds minerals back, which slightly raises TDS readings — expected, not a fault. | $200–280 | $60–90 | Check price |
Certification listings change. Before buying, confirm the current listing for the exact model in the NSF certified products database — a manufacturer's marketing page is not a certification. WaterQ earns a commission on purchases made through these links at no extra cost to you; see our affiliate disclosure. This is general information, not medical or engineering advice.
For a full breakdown of certifications, running costs and the models worth considering, see our buying guide for heavy metals (mercury, cadmium, barium and others).