“There is currently no federally-enforced drinking water standard for radon. EPA has proposed to regulate radon in drinking water from community water suppliers (water systems that serve 25 or more year-round residents). EPA does not regulate private wells.” From an EPA publication, Basic Information about Radon in Drinking Water
“As uranium breaks down, radon gas forms…” From and EPA publication, Basic Information about Radon in Drinking Water
So. This is the new real estate hot button. We went through mold and radon gas panics; now we have radon and other ‘contaminants’ in drinking water. What we need to know is that this is a newly raised issue, and frankly there are no real stats to which to refer, in some cases. IN THE MEANTIME…If you are on a water system supplied by a reservoir, for example (open to the air system), the EPA says the radon gas will evaporate long before it reaches you. It is well water that’s the real concern, according to research, and relax; not all well water has radon in it. The EPA seeks to determine a limit, and it will be based on what amount could evaporate into your home and create a number above the ‘radon in air’ limit, if I read correctly. The only thing that worries me is that the EPA is seeking to determine a limit. But that’s just me.
Uranium in water has also bubbled up as an issue. By the way, radon and uranium are typically present to some extent in soil and air, and therefore often in water too. We live with many, many elements that are deemed harmful, every day. But some of these rock borne contaminants have established contamination limits (meaning ‘some’ is okay; it has to be because we live on a rock), but the limits are high, relatively: “The EPA has estimated that the additional lifetime cancer risk associated with drinking water that contains 30 ug/L (the MCL for uranium) is about 1 person in 10,000 who drinks two liters of uranium-contaminated water a day for 70 years. Bathing and showering with water that contains uranium is not a health concern.” From a publication by Western Upper Peninsula Public Health Department, citing the EPA regulation. By the way, MCL is maximum contamination limit, and I added the underline.
I don’t drink 2 liters of water a day.
But these two contaminants are not poisons; they are either the result of decay, or actually DO decay, releasing energy that can burn/damage human tissue, if present in large enough concentrations, over a long period of time. What you need to know is that unless you have your water tested, you won’t know what’s there or how much, and once you have numbers you will need to investigate for yourself how or whether you want to remediate. And remember that the EPA do not regulate private wells.
In the meantime, don’t panic. Do your homework! Remediation…just the word, brings dollar signs to the forefront. But you will shortly be asked, if I know my business and I do, to choose whether or not to have your water tested for these elements, and it will cost you. Be ready.