Wisconsin Water Testing Labs
Find EPA-certified water testing laboratories in Wisconsin. All labs listed are certified by Wisconsin Department of Natural Resources (chemistry) and Department of Agriculture, Trade, & Consumer Protection (microbiology) and meet federal standards for drinking water analysis.
State Certification Program
Wisconsin Department of Natural Resources (chemistry) and Department of Agriculture, Trade, & Consumer Protection (microbiology)
Visit Certification Program WebsiteLaboratory Directory
Excel spreadsheet for chemistry certifications, searchable database for microbiology
💡 Local Resources & Tips
Wisconsin splits certification between two departments; State Lab of Hygiene provides comprehensive testing services
How to Use This Directory
- 1.Access the laboratory directory using the link above
- 2.Verify certifications: Confirm labs hold current state certification for the specific contaminants you want to test (bacteria, nitrate, metals, VOCs, PFAS)
- 3.Request pricing: Call multiple labs to compare prices and turnaround times—costs vary significantly even within the same state
- 4.Schedule testing: Follow lab instructions for sample collection, storage, and delivery
- 5.Review results: Compare detected concentrations against EPA standards and take appropriate action
Testing Quick Facts
- •Annual minimum: Bacteria + nitrate ($150-$200)
- •Every 2-3 years: Comprehensive panel ($250-$400)
- •PFAS testing: Near risk sources ($300-$500)
- •Turnaround: 24-48 hrs (bacteria), 5-10 days (comprehensive)
Prefer a Simpler Option?
Can't find a convenient local lab? Mail-in testing offers EPA-certified analysis without appointments or travel.
SimpleLab
Standard Home Water Test
$232
Comprehensive water analysis testing over 200 contaminants including bacteria, heavy metals, and chemical compounds.
SimpleLab
Advanced Home Water Test
$369
Most comprehensive home water test including all standard tests plus additional parameters for ultimate peace of mind.