ROCK RIVER LABORATORY INC
Effective Period: 01/01/2026 - 12/31/2026
Contact: DUSTIN SAWYER ~ DUSTIN_SAWYER@ROCKRIVERLAB.COM
710 COMMERCE DR, WATERTOWN, WI 53094
Mailing Address: PO BOX 169, WATERTOWN, WI 53094
Phone: (920) 261-0446
Endorsements:
     CERTIFIED FOR SOIL
     CERTIFIED FOR SOIL (Effective 11/04/2025)
     CERTIFIED FOR SOIL
     CERTIFIED FOR SOIL
     CERTIFIED FOR SOIL

MDA Contact

Larry Gunderson
Larry.Gunderson@state.mn.us
651-201-6168
Pesticide & Fertilizer Management Division