The Environmental Health Program is a part of the Idaho Division of Public Health's Bureau of Environmental Health and Communicable Diseases. We partner with local public health districts, state and federal agencies, and community organizations to achieve our mission. We provide information for Idahoans about environmental factors that impact health, and how to maintain healthy environments at home, work, and school. We promote healthy homes and communities, safe water, and clean air.
In This Section
Learn more about Environmental Health Factors and how to manage them.
Events
Private Well Water Testing a the Minidoka-Cassia Groundwater awareness event
When: Wednesday, May 20, 2026, from 12pm-6pm
Where: South Central Public Health 485 22nd St., Hayburn, ID
Have you ever had your private well water tested for contaminants? Now is the time to do this for free!
Learn if your water is contaminated and how to reduce exposures and protect your family. Idaho Department of Health and Welfare and partner agencies will be on-site to provide you education and answer any questions you may have.
Water Testing
An opportunity for free testing of fluoride, nitrate, arsenic, uranium, manganese, lead, and other contaminants. Nitrate test strips will be available if you would like to test your water at home. Test strips are a great in determining if more detailed testing should be conducted.
Disclaimer:
Sample results will be posted on the Idaho Department of Health interactive groundwater map. Details can be found on the Environmental Health Website. You must agree on the Chain of Custody form to allow Idaho Bureau of Laboratories to use testing results in the interactive groundwater map. If you do not agree to this, please visit your local water testing laboratory for information on fees and testing.
*only test results will be displayed on the map, not personal identifiable information.
Why do we want your water results?
- So, we can help keep you and your family safe from harmful contaminants by providing you with education and outreach about your water chemistry and how to fix it.
- To make private well owners aware of existing ground water quality data where you live. Your test results help others in your area determine what they should test for in their well and what to expect.
- Promote and educate you on the importance of regular ground water quality testing because private wells (ground water quality) are not regulated by the State of Idaho.
- Private well owners are responsible for maintaining their well and ensuring the water is safe to drink, which is accomplished through testing.
How to take a water sample:
Improper sampling will result in inaccurate testing results. For proper sampling instructions, please watch our videos on proper sampling.
Click here to watch videos. Videos can be found at the bottom of the page.
Our partners will be there to share information on Childhood Lead, Radon, and Private Well Water.
- Idaho Department of Health and Welfare (DHW) - Public Health
- Idaho Bureau of Laboratories (IBL)
- Soil Screening, Health, Outreach, and Partnership (soilSHOP)
Health Reports
Lead contamination at Gilmore is the result of historic large-scale hard rock mining operations and wind and water erosion of mining waste. The mines on the hillsides above Gilmore operated in the early 1900s and primarily produced lead and silver ore. During the early years, processed ore was hauled over 80 miles via wagons pulled by horses or a steam-powered tractor. Later, ore was transported off the hillside by a half-mile long tramway that travelled through the townsite before emptying into waiting railroad cars.
High concentrations of lead in the soil at the Gilmore townsite were found during DEQ sampling events in 2016 and 2017. At some locations, lead soil levels are more than 50 times greater than what is considered safe for residential areas. As a result of these sampling events, DHW requested the ATSDR complete an evaluation, resulting in the ATSDR health consultation report. This report is expected to be available to the public in late June 2023.
ATSDR - Public Health Assessments & Health Consultations - Idaho
Gilmore Mine Area and Townsite Fact Sheet
Please visit www.deq.idaho.gov/gilmore for more detailed site information, including related documents and past events.