Contact Franklin County Lab: Your Water Safety Experts

Connect with Missouri’s state-licensed laboratory for drinking water testing, public water system operator services, and well water treatment. Reach our team for clear, report-based guidance and prompt scheduling.

Reach Out for Certified Water Testing & Compliance

Questions about your drinking water? Need to schedule a bacteria test, coordinate well chlorination, or request a certified water operator for a public supply? Franklin County Lab can help you take the next step with certified testing and practical guidance. We are a state-licensed, family-operated laboratory serving homeowners, realtors, builders, and public water supply owners across Union, St. Louis, and nearby communities. If you’re dealing with a time-sensitive situation, such as a suspected contamination issue, a real estate deadline, or ongoing DNR compliance needs, contact our office and we’ll route you to the right professional. You’ll get clear answers based on laboratory standards and documented results, along with straightforward options for treatment or operator support when needed. Use the form below, call our office, or request a consultation. We’re ready when you are.