Open Orange County Utilities' 2025 Drinking Water Report — the official document, published by the county — and you'll find this line: combined radium 226 + 228: 1.5 pCi/L. The federal legal limit is 5 pCi/L, so the system is in compliance — no violation. Radium is a naturally occurring radioactive mineral, and the county's own testing is the only reason anyone knows it's there.
Where does it come from?
Nobody spilled it. Central Florida's drinking water sits in limestone aquifer rock, and that rock contains naturally occurring radioactive minerals. The water dissolves trace amounts as it sits underground — then it flows to your tap. You can't taste it, smell it, or see it.
What gets it out.
For drinking water, a reverse osmosis system certified to NSF/ANSI 58 is independently certified to reduce radium — the certification means a lab verified the reduction, not just the manufacturer. How reverse osmosis works →
One honest note: our free in-home test measures hardness, chlorine, TDS, pH, and iron on the spot — it does not test for radium. Radium takes a certified lab sample. But if you want the full picture of your water, the free test is the right first step.
What's in your water? Utility reports are system-wide averages — nobody has tested your tap. Schedule your free in-home water test and find out. Get your $100 gift card for dinner just for having your water tested — take your family to dinner! Or learn more at orlandowaterfiltrationpros.com.