Carbon Tetrachloride in Drinking Water: Health Risks, Sources, and How to Remove It
Carbon tetrachloride is an organic contaminant regulated in drinking water. The US Environmental Protection Agency has set a Maximum Contaminant Level (MCL) of 5 μg/L for this compound to safeguard water supplies. It is classified under organic chemicals and is monitored to prevent potential health issues.
Health Effects
Exposure to carbon tetrachloride in drinking water can lead to health issues, including liver problems. Additionally, consumption of water contaminated with this organic chemical is associated with an increased cancer risk. Keeping levels below the regulatory limit helps mitigate these chronic health concerns.
How Carbon Tetrachloride Gets Into Tap Water
This contaminant enters water supplies primarily from industrial sources. Releases from chemical plants and other industrial activities can introduce carbon tetrachloride into groundwater or surface waters. Proper monitoring is essential near areas with active or historic industrial operations.
How to Remove Carbon Tetrachloride From Your Water
Carbon tetrachloride can be removed from drinking water using specific treatment methods. Granular activated carbon systems are widely utilized to filter this compound. Additionally, packed tower aeration is an effective method for removing this organic contaminant.
Should You Test Your Water?
To verify the levels of carbon tetrachloride in your drinking water, you can review your local utility's annual consumer confidence report or check the WaterQ database. If you use a private well near industrial areas, getting your water tested by a certified laboratory is recommended. You can also look up your local water system on WaterQ or check the Carbon Tetrachloride data page for reported levels in your area.
Frequently Asked Questions
Is Carbon Tetrachloride dangerous in drinking water?
Yes, consuming water containing carbon tetrachloride can present chronic health risks. Long-term exposure is associated with liver problems and an increased cancer risk.
How does Carbon Tetrachloride get into tap water?
It typically enters water sources through runoff or discharges from chemical plants and other industrial activities.
How can I remove Carbon Tetrachloride from my water?
Effective removal methods include the use of granular activated carbon filters and packed tower aeration systems.
Source: EPA National Primary Drinking Water Regulations and WaterQ National Database. For more contaminants, visit our contaminant library.
What actually removes vocs (benzene, tce, pce and related solvents)
Volatile organic compounds are the case where activated carbon genuinely shines — EPA lists granular activated carbon as the best available technology for most of them. Look for an NSF/ANSI 53 filter with a VOC reduction claim rather than a plain taste-and-odor cartridge. Because VOCs evaporate readily, they also enter the air during hot showers, so a whole-house carbon filter is worth considering when levels are high, not just a filter at the kitchen tap.
Works
- Carbon certified for lead (NSF 53)The cheapest thing that genuinely removes lead, cysts and many VOCs.
- Reverse osmosis (NSF 58)The broadest removal available at home: arsenic, nitrate, fluoride, PFAS, TDS.
- Catalytic carbonRequired for chloramine. Standard carbon barely touches it.
Will not fix this
- Ion-exchange water softener
- UV disinfection (NSF 55)
- Ion-exchange pitcher
Test before you buy.VOCs (benzene, TCE, PCE and related solvents) 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 | |
|---|---|---|---|---|
| Aquasana AQ-5200 Under-SinkUnder-sink | NSF/ANSI 42, 53, 401 and P473 certified.Catch:Carbon, not RO — no meaningful fluoride, nitrate or arsenic reduction. | $110–160 | $80–120 | Check price |
| SpringWell CF1 Whole-House CarbonWhole house | Catalytic carbon media, which is the grade required to reduce chloramine.Catch:Whole-house carbon protects showers and appliances but is not a substitute for a point-of-use lead or PFAS filter at the tap. | $900–1,400 | $0–100 | Check price |
| 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 |
| 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 |
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 vocs (benzene, tce, pce and related solvents).