Southeastern Minnesota Water Analysis Laboratory (SEMWAL)


Water Lab Technician 

Water Testing

Testing is available for coliform bacteria, Escherichia coli (E. coli) bacteria, nitrate, nitrite, sulfate, chloride, fluoride, lead, and arsenic.

Option 1

Option 2

Pick up a test kit at Olmsted County Public Health Building

Water Test Fees

Testing Fees (353 KB)

Water Sampling Information

Before Sampling

Sampling Instructions (17 KB)

Sample Acceptance Policy (303 KB)

After Testing

What do your test results mean? (66 KB)

How to disinfect your well (608 KB)

Lab Certification


Scope of Certificate (26 KB)

Thank you for using our water testing services. Let us know how we did by completing our short six question survey at: 

Water Lab Customer Survey


Phone: 507 328-7495