Water testing in Louisiana
Lowest price: $10, LSU AgCenter, Department of Agricultural Chemistry.
Louisiana Water and Soil Testing, Agricultural Chemistry Lab
$10
- Nitrogen TKN
- Total phosphorus
- Orthophosphate
- Dissolved phosphorus
- Copper
- +10 more
Contact the Agricultural Chemistry lab for the sample submittal form and fee schedule, then submit your water sample with payment.
Open to the general public for a fee
- LSU AgCenter Agricultural Chemistry, Room 102, Agricultural Chemistry Building, 110 LSU Union Square, Baton Rouge · 225-342-5812
Checked October 1, 2026. Report a change
Louisiana Private Well Water Testing
$40
- Bacteria
- E. coli
Order online through the LDH private well portal, or call 888-293-7020.
Louisiana private well owners; kits are limited in number
- Louisiana Department of Health, 628 N. 4th Street, Baton Rouge · 888-293-7020
Checked October 1, 2026. Report a change