If you run a private well in or around Troy, the testing list you have on the fridge probably covers hardness, iron, bacteria, and maybe nitrates. Radium is the item that often gets left off. This guide explains what radium is, why it can show up in Troy-area wells, and how to test for it without guessing.
What radium is and where it comes from
Radium is a naturally occurring radioactive element. It forms as uranium and thorium break down in rock and soil over very long periods. In the Troy area, the limestone and dolomite bedrock below the surface is the main source to consider. The same deep-bedrock radium that shows up in city water can also reach private wells that draw from those deeper layers. Radium is not something a household adds, and it is not a sign of recent surface contamination.
Why private wells are rarely tested for it
Public water systems are tested under federal rules. Private wells across rural Lincoln County are not regulated or tested under the Safe Drinking Water Act, so nobody checks your well on a schedule. Owners usually test for bacteria and a few common items, and radium is not on most standard panels. A well can look and taste perfectly ordinary for years while carrying an element nobody has measured.
How to test for radium
Start with a state-certified or accredited laboratory that offers radium testing for drinking water. Ask which radium measurements it reports, since results may be listed for the two main radium forms separately or combined. Then follow the lab's sample instructions exactly, including the container type, the tap to use, and how quickly the sample must reach the lab.
- Call the lab and confirm it accepts private well samples.
- Ask what bottle and preservative it uses, and whether it needs a specific collection time.
- Collect the sample from a tap closest to the well head, before any treatment equipment.
- Write down the date, the tap used, and any recent storms or pump work.
- Ship or deliver the sample within the lab's stated window.
Reading the results without guessing
A radium result comes back as a measured value with a reporting limit and sometimes an uncertainty figure. Keep the full report, since it should state the units and the method used. Do not compare your number to a neighbor's result. Well depth, the aquifer layer being drawn from, and pump setting all differ from property to property.
If the result is above the level your state or the lab's guidance identifies for follow-up, the next step is a conversation with a qualified water professional or your local health authority about what it means for your household. Ask how the sample was collected, whether a retest is advisable, and which approaches fit your water. Avoid deciding on equipment based on a single sample alone.
Questions to ask before choosing a fix
- Is this result a single sample or part of a repeat series?
- Does the report separate the two main radium forms, or only give a combined figure?
- Was the well tested for other items in the same visit, such as hardness, iron, and bacteria?
- Does the household use the same tap for drinking water and cooking?
- Who will service any equipment, and how often will the water be retested afterward?
What to do this week
Pull up your most recent well report, or confirm whether a radium test was ever done. If none exists, order one from an accredited laboratory and file the paperwork with your well record. Troy homeowners on city water can check whether the public water report lists radium, since it reflects the same bedrock source. Either way, a test answers the question. Guessing does not.