AgSource
Commercial or private lab
1701 Detroit St., Ellsworth, IA 50075
Certification programs (4)
Drinking water- Drinking Water (Safe Drinking Water Act compliance testing)
Also certified in these Iowa programs: Nonpotable Water, Solid Waste/Contaminated Sites (Soil & Sludge), Solid Waste/Contaminated Sites (Water).
From the Iowa DNR list of certified labs, checked 2026-11-03. Iowa's public list shows certification programs, not individual tests, so ask the lab which tests (bacteria, nitrate, arsenic and so on) it's certified for.
Listed as certified in the Drinking Water program by the Iowa Department of Natural Resources (DNR) Laboratory Certification Program (state lab number 061). Listing checked 2026-11-03. Call the lab before sampling to confirm it accepts private well samples, which tests it's certified for, prices and sample bottles.