Certified Water Testing & Treatment Service Areas in Missouri
Franklin County Lab
proudly serves a one-hour radius from Union, MO—including St. Louis Metro, Washington, Eureka, and beyond—with state-certified drinking water analysis, well chlorination, and operator services.
Where We Offer Certified Water Services
Franklin County Lab
delivers state-certified well water testing, treatment, and regulatory operator services across a wide region of east-central Missouri. Our core service area covers a one-hour drive from Union, MO, ensuring rapid response for urgent bacteria testing, well chlorination, and compliance management. We regularly help homeowners, realtors, and public water system owners throughout Franklin, St. Louis, Jefferson, and Crawford counties. For clients outside this radius, extended travel is available with a service call fee. We understand the unique water challenges in both rural and suburban communities—from iron bacteria in rural wells to DNR compliance in growing towns. Our technicians are familiar with local aquifers, common regional contaminants, and the regulatory needs specific to Missouri. Whether your well is near the Meramec River, your subdivision is in Ballwin, or your public system is in St. Clair, our team is equipped to ensure your water is safe, compliant, and professionally verified.
- Union, MO (Home base and lab location)
- Washington and Sullivan in Franklin County
- St. Louis Metro: Ballwin, Kirkwood, Chesterfield
- St. Charles County: O'Fallon, St. Peters, Wentzville
- Jefferson County: Hillsboro, Scotsdale, Arnold
- Crawford County: Cuba, Bourbon, and Sullivan
- Hermann and Augusta wine country regions
- Eureka and Pacific along I-44 corridor
- St. Clair, Gerald, Rosebud, Owensville
- Marthasville and New Haven communities
- Outlying rural areas (with additional service fee)
