In a medium bowl, whisk together the water, ranch dressing mix, Italian dressing mix, and brown gravy mix until well combined and smooth. Set aside.

Pat the beef chuck roast dry with paper towels. Generously season all over with salt and pepper.

Place the seasoned roast into a 6-quart slow cooker. Pour the dressing mixture over the top.

Cover and cook on Low for 6-8 hours, until the meat is very tender when pierced with a fork.

Transfer roast to a cutting board and slice or shred with two forks.

Serve meat and cooking liquid spooned over mashed potatoes, egg noodles or rice. Enjoy!