Outstanding both technically and in terms of customer service. Environmental Testing Labs returns calls and inquiries promptly, calls to confirm and keeps appointments. They know how to use email properly, and can provide test results via email promptly. We had to have a new water well drilled, and Environmental Testing Labs was actually the BRIGHT spot in the whole experience (we were with no running water for two full MONTHS, thanks to a horrible drilling company). The Environmental Testing Labs people are cheerful and intelligent. It's great to know there are companies like this, still in Maryland. read more