Groundwater radionuclide report record
Yenra | Updated September 10, 2026
Article: https://yenra.com/wiki/Radioactive_fossil_groundwater/

Instructions: Save this UTF-8 text file and fill in the fields in any text editor. Keep dated source references with the completed record. Blank fields are prompts for your information.

Purpose: Prepare an accurate question for a supplier, certified laboratory or regulator. This sheet is not a compliance determination.
Supply type / utility or well owner / jurisdiction:
Aquifer / well interval / age study and method, if relevant:
Report / laboratory / sample ID / collection date:
Raw source, treated outlet or consumer tap:
Analyte / result / exact unit / uncertainty / detection limit / qualifier:
Radium-226 and radium-228 from the same sample, where comparable:
Fictional unqualified results: 2.0 + 2.5 = 4.5 pCi/L combined radium.
EPA U.S. community-water-system summary: 5 pCi/L combined radium-226/228; uranium 30 micrograms/L. Verify current local requirements.
Retain less-than signs; ask the laboratory how to handle nondetects and qualified results.
Applicable standard / source / date / monitoring and averaging rules:
Other water-quality tests / issued notice / instructions:
Question for supplier or health authority:
Treatment evaluation / maintenance / residual handling / confirmation testing:
Response / next action / review date:

Primary references consulted for the accompanying guide:
https://www.usgs.gov/mission-areas/water-resources/science/groundwater-age?page=1
https://www.epa.gov/dwreginfo/radionuclides-rule
https://www.epa.gov/privatewells