Many states have agricultural extensions on a state university campus with garden variety soil testing of pH, certain nutrients, micronutrients, soil texture, percent organic matter, etc. Some even test for garden variety heavy metals like cadmium, arsenic, chromium, and of course, lead. Many will test for more than this. Google "soil testing services" and your state to find out where to get this done. Below are some that I have used (except Maine, which is exhaustive and useful in certain locales) and have been satisfied with their expediency, information, and prices.
- Cornell Nutrient Analysis Laboratory at Cornell University, Ithaca, NY.
- Another source with good prices and easy to understand interface is the UMASS Extension Service.
- The State of Maine has a very comprehensive service for soil testing. We're talking heavy metals, mercury, PCBs, pesticides, hydrocarbons like fuel oil, etc. Their regular soil test link is here.
- For an exhaustive list of a variety of soil testing service companies and labs, and additional informational resources on soil, see this listing of Alternative Soil Testing Laboratories.