Question 1

What is the EPA limit for combined radium 226+228 in drinking water?

Accepted Answer

The EPA Maximum Contaminant Level (MCL) for combined radium 226+228 is 5 pCi/L. Public water systems must keep combined radium 226+228 below this level.

Question 2

What are the health effects of combined radium 226+228 in drinking water?

Accepted Answer

Radium-226 and Radium-228 are radioactive isotopes that behave like calcium in the body, meaning they concentrate in bones and teeth after ingestion. The EPA MCL of 5 pCi/L applies to the combined activity of both isotopes. Long-term exposu

Question 3

Where does combined radium 226+228 in drinking water come from?

Accepted Answer

Radium is naturally present in nearly all rocks and soils as part of the uranium and thorium decay chains. It dissolves readily in groundwater, particularly in aquifers with sandstone, limestone, or shale formations. Deep aquifer wells are

Question 4

How do I remove combined radium 226+228 from my drinking water?

Accepted Answer

Combined Radium 226+228 is effectively removed by: Reverse Osmosis, Ion Exchange, Lime Softening. Look for NSF-certified filters that explicitly list combined radium 226+228 reduction.

Combined Radium 226+228 in Drinking Water - EPA MCL, Health