By Andi Anderson
Testing soil, water, and plants is an important step in protecting human health, food safety, and environmental quality. The Michigan State University Extension soil testing service offers several standard analyses through its Home Lawn and Garden Soil Test Mailer and commercial soil test bags.
These tests measure soil nutrients, pH, organic matter, and cation exchange capacity, and include clear recommendations for fertilizer and soil amendments.
However, standard MSU Extension soil tests do not analyze samples for contaminants such as heavy metals, pesticides, or PFAS. These substances can sometimes be present due to past land use, including agriculture, industrial activity, or waste disposal, and may pose risks to human health if not identified.
One way to reduce exposure risk is to understand the history of a site. Previous land use can help indicate whether contamination may be present.
Educational resources developed by NC State Extension explain how gardeners and landowners can assess risk, identify which contaminants to test for, and understand laboratory results. Although originally developed for urban gardening, the information applies broadly to anyone concerned about soil safety.
For individuals who want to test contaminants, Extension specialists have compiled an educational list of laboratories that analyze soil, water, or plant tissue for substances such as lead, other heavy metals, pesticide residues, and PFAS.
These laboratories use different testing methods depending on the sample type and contaminant of concern. Residents are encouraged to contact laboratories directly to confirm testing services and receive guidance on proper sample collection, packaging, and shipping.
Some laboratories focus on heavy metals like lead, while others test for pesticide residues in soil, water, or plant tissue. Additional facilities specialize in PFAS testing or identifying unknown soluble compounds using advanced analytical techniques.
The laboratory list is provided strictly for educational purposes and does not represent endorsements or exclusions.
Understanding testing options allows residents, gardeners and agricultural producers to make informed decisions about soil management, crop safety, and environmental health.
Proper testing, combined with education and risk assessment, supports safer land use and long-term agricultural sustainability.
Photo Credit: gettyimages-sasiistock
Categories: Michigan, General