Certified Home Water Testing & Treatment in Franklin County

Protect your family and home with state-approved water analysis, clear recommendations, and quick turnaround, serving Union, St. Louis, and nearby Missouri communities.

A close-up of a vibrant purple iris flower with yellow and white details, centered against a blurred green background.
A vibrant green abstract lowercase letter 'e' formed by a single continuous brushstroke.
A green, rectangular glass or plastic container holding several light-colored, circular wooden discs.

REQUEST A QUOTE

Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems
Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems
Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems
Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems
Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems
Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems
Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems
Professional Well Chlorination
State-approved Testing
EPA-approved Methods
Water Treatment Systems

State-Certified Water Analysis for Homeowners

At Franklin County Lab, we view home water quality as essential for health and property. Since 1992, we’ve helped homeowners in Union, the St. Louis Metro, and Franklin County with state-certified drinking water testing for private wells. Using approved methods for Total Coliform and E. coli, we ensure reliable results. If your water is safe, no treatment is necessary; if there’s a risk, we offer guidance on certified disinfection and filtration solutions.

Trusted Home Water Experts—Serving Union & Beyond

Franklin County Lab is a privately owned, independent laboratory based in Union, MO. We are not a government agency, and we’re not a retail shop that leads with equipment. We focus on drinking water analysis first, then provide treatment only when results justify it. Homeowners, realtors, and builders rely on us for certified reporting that supports real estate timelines and peace of mind. Our team’s strength is the combination of laboratory rigor and licensed oversight, which helps you move from uncertainty to a clear plan. From certified bacteria testing and well chlorination to installations like UV light, water softeners, and reverse osmosis, we keep the workflow simple and the recommendations grounded in the lab report. If you’re in Union, Washington, Sullivan, St. Clair, or the St. Louis Metro area, you can count on a local partner who prioritizes accuracy and integrity.

Why Homeowners Choose Franklin County Lab

Protecting your home’s water quality is our top priority. We ensure reliable tests and rapid results, so you won't wait long for information. Our local expertise addresses your area's specific needs and challenges. Plus, we avoid unnecessary upsells or added costs, providing you with the best service possible.

A white checkmark icon inside a solid black circle on a white background.

Certified laboratory results accepted by banks, realtors, and the Missouri DNR.

A white checkmark centered inside a solid black circle.

No upsell guarantee: If the report is safe, we do not push equipment.

A white checkmark inside a solid black circle.

All-in-one home support: Testing, reporting, and treatment in one place.

A white checkmark inside a black circle.

Fast turnaround, with many results available within 24–48 hours when timing matters.

A white checkmark icon centered inside a solid black circle.

Service coverage includes Union, St. Louis, Washington, Sullivan, and nearby communities.

A white checkmark centered inside a solid black circle.

Decades of hands-on experience in residential well and water system care.

OUR top SERVICES

Explore our full suite of lab-backed testing, water treatment, and certified operator services trusted across Missouri.

A black icon of a glass with a horizontal line and a circular droplet symbol on the upper right.

 Water Testing Services

Certified testing for Coliform, E. coli, lead, nitrates, and advanced Water Check panels for metals, pesticides, and more.

A black icon of a spray bottle with a plus sign, representing a disinfectant or medical cleaning spray.

certified water operators

Licensed operator services for public water systems, including monthly BacT sampling, inspections, and DNR compliance management.

Icon of a water filtration system with three filter cartridges and a pressure gauge.

Water treatment & Filtration Systems

UV systems, softeners, iron filters, and reverse osmosis are installed only when lab results confirm the need.

A black icon of a laboratory flask containing two leaves, symbolizing plant-based science or natural ingredients.

well chloration services

Professional 24 to 48-hour well disinfection performed with licensed oversight after bacteria detection or system contamination.

A black icon showing two L-shaped pipe fittings with flanged ends facing each other.

water contaminants guide

Educational guidance on bacteria, iron buildup, odors, and chemical risks with clear direction on identification and treatment.

What Homeowners Say About Franklin County Lab

FREQUENTLY ASKED QUESTIONS

  • How often should I test my home’s well water?

    Homeowners should test their well water at least once a year for bacteria and nitrates, or after any system repair or flooding event.


  • Are your water test results accepted by realtors and banks?

    Yes. As a state-certified lab, our results are fully accepted for real estate transactions, mortgage approvals, and DNR compliance.


  • What if my home’s water tests positive for bacteria?

    If bacteria are found, we’ll explain what the result means, outline the risk level, and provide certified well chlorination or treatment options based on the report, without sales pressure.


  • Do you install home filtration or softener systems?

    Yes, we install UV lights, water softeners, iron/sulfur filters, and reverse osmosis, and we tie recommendations to certified test results rather than quotas.


  • What areas do you serve for home water testing?

    We serve Union, St. Louis Metro, Franklin County, and nearby cities like Sullivan, Washington, and St. Clair. Extra service fees may apply outside a 1-hour radius.


A gloved hand holds a small beaker filled with vibrant blue liquid in a clinical laboratory setting.