MTBE (Methyl tert-Butyl Ether) in Drinking Water: Health Risks, Sources, and How to Remove It
MTBE (Methyl tert-Butyl Ether) is a chemical compound categorized as an organic contaminant. The EPA has established a Maximum Contaminant Level (MCL) of 20 μg/L for this substance in drinking water. Understanding its properties and regulatory limits helps ensure tap water safety.
Health Effects
Consuming water contaminated with MTBE can lead to adverse health outcomes, including nervous system effects. Additionally, there is a possible cancer risk associated with exposure. It is important to monitor water sources to mitigate these potential health risks.
How MTBE (Methyl tert-Butyl Ether) Gets Into Tap Water
MTBE typically enters drinking water supplies from gasoline-related sources. It has commonly been used as a fuel additive, which can lead to contamination of nearby water supplies. A primary pathway for this contaminant to reach groundwater is through leaking gasoline tanks.
How to Remove MTBE (Methyl tert-Butyl Ether) From Your Water
Several methods can be used to treat and reduce MTBE levels in drinking water. Granular activated carbon systems are commonly employed to filter this organic compound from water supplies. Alternatively, air stripping is an effective treatment method to remove the contaminant during the water purification process.
Should You Test Your Water?
If you are concerned about MTBE in your water, you can check your local consumer confidence report or search the WaterQ database. Private well owners may want to consider periodic testing, especially if they live near gasoline storage facilities. You can also look up your local water system on WaterQ or check the MTBE (Methyl tert-Butyl Ether) data page for reported levels in your area.
Frequently Asked Questions
Is MTBE (Methyl tert-Butyl Ether) dangerous in drinking water?
Yes, MTBE can pose health concerns if present in drinking water. Exposure is linked to potential nervous system effects and a possible cancer risk. While it does not present the immediate acute hazard of microbial pathogens, it should be managed to protect health.
How does MTBE (Methyl tert-Butyl Ether) get into tap water?
MTBE typically enters tap water through environmental contamination. This is primarily caused by leaking gasoline tanks and its use as a fuel additive.
How can I remove MTBE (Methyl tert-Butyl Ether) from my water?
MTBE can be removed from drinking water using treatment methods like granular activated carbon or air stripping. These treatment systems are effective at reducing this organic contaminant to safe levels.
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).