Inorganic
Fluoride in your water
Is Fluoride in drinking water dangerous?
It depends on the level and how long you're exposed. The EPA legal limit (MCL) for Fluoride is 4000 ppb. Meeting the legal limit isn't the same as zero risk — test your water to know your level.
How do you remove Fluoride from water?
Fluoride is treated by Reverse Osmosis. Choose a system independently certified to NSF/ANSI standards to reduce Fluoride, and test your water first to confirm the level.
Source: EPA MCL / MCLG; WHO guidelines; NSF/ANSI · 2026
Health effects
Fluoride occurs naturally in groundwater and is also added by many utilities to reduce tooth decay. At high natural levels it can damage developing teeth and, over long exposure, weaken bones. The federal limit targets these high-level health effects rather than the low levels used for dental benefit.
The health-based goal vs. the legal limit
The federal legal limit (MCL) is the maximum allowed by law. The EPA health goal (MCLG) is the level below which no health risk is expected — it is non-enforceable and often stricter than the legal limit.
EPA health goal (MCLG)
No federal health goal set
Federal legal limit (MCL)
4000 ppb
Source: EPA National Primary Drinking Water Regulations (MCL / MCLG) · 2026
What removes Fluoride
Where Fluoride has been found
Fluoride shows up in the public water record for these cities. Each page has the measured level, the legal limit, and what removes it.
- 1
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Request your free water test
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Is Fluoride in your water?
Check your city's public record, then book a free 30-minute test to confirm what's in your home.