Selenium in your water

Is Selenium in drinking water dangerous?

It depends on the level and how long you're exposed. The EPA legal limit (MCL) for Selenium is 50 ppb. Meeting the legal limit isn't the same as zero risk — test your water to know your level.

How do you remove Selenium from water?

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

Health effects

Selenium is a naturally occurring element that is a necessary nutrient at trace levels but toxic in excess. Long-term high exposure can damage the nervous system, hair, and nails. It enters water from natural deposits and from irrigation drainage.

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 Selenium

Where Selenium has been found

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

• Show Low, AZdetected, within the legal limit →

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