Question 1

What is the EPA limit for fluoride in drinking water?

Accepted Answer

The EPA Maximum Contaminant Level (MCL) for fluoride is 4 ppm. Public water systems must keep fluoride below this level.

Question 2

What are the health effects of fluoride in drinking water?

Accepted Answer

Fluoride's health effects depend heavily on concentration. At the CDC-recommended level of 0.7 ppm added to public water supplies, fluoride reduces dental cavities by approximately 25%. But at levels above 2 ppm, dental fluorosis becomes co

Question 3

Where does fluoride in drinking water come from?

Accepted Answer

Fluoride enters drinking water from two distinct paths. Natural fluoride occurs in groundwater that passes through fluoride-rich geological formations, particularly in the western US, parts of Texas, and areas with volcanic geology. Some we

Question 4

How do I remove fluoride from my drinking water?

Accepted Answer

Fluoride is effectively removed by: Reverse Osmosis, Activated Alumina, Distillation. Look for NSF-certified filters that explicitly list fluoride reduction.

Fluoride in Drinking Water - EPA MCL, Health Effects & Removal