A workshop about testing for uranium in well water will be held Tuesday in Culloden at the old schoolhouse on the corner of Church and Lockett streets.

The Monroe County Cooperative Extension has been coordinating the workshops across the county this year as rural residents are finding elevated levels of the radioactive metal uranium in their well water, and some elevated levels of radon in water and air. Radon is produced when uranium decays.

From 5:30 to 6 p.m., extension officials will accept residents’ well water samples to be tested for a fee of $15, said extension agent Dana Lynch. At 6 p.m. a presentation will give details about the problem and potential solutions for homeowners.

Lynch said between 530 and 550 residents have tested their water for uranium, with about 30 finding levels above the safe threshold.

County officials have been seeking further information about where uranium contamination might be concentrated before potentially seeking grant funding to run water lines to affected residents.