Mercury in your water

Is Mercury in drinking water dangerous?

It depends on the level and how long you're exposed. The EPA legal limit (MCL) for Mercury is 2 ppb. Meeting the legal limit isn't the same as zero risk — test your water to know your level.

How do you remove Mercury from water?

Mercury is treated by Reverse Osmosis. Choose a system independently certified to NSF/ANSI standards to reduce Mercury, and test your water first to confirm the level.

Health effects

Mercury reaches water from natural deposits, industrial runoff, and discarded products. Long-term exposure harms the kidneys and nervous system. It is tightly regulated because of its toxicity at low concentrations.

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.

What removes Mercury

Where Mercury has been found

Mercury shows up in the public water record for these cities. Each page has the measured level, the legal limit, and what removes it.

• Oro Valley, AZdetected, within the legal limit →

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