I recently purchased a Waterdrop three-step under sink water filter and successfully connected it to my cold water line. However, I'm having trouble with the main line connection since it seems to be integrated into the faucet itself (specifically, it's a Hansgrohe Joleena model) and I can't access it. I've attempted to disassemble the faucet, but it's not working out. Any suggestions on how I can connect my water filter? Here are pictures to help illustrate the setup: [link1](https://imgur.com/a/KeQEMVz) and [link2](https://imgur.com/a/pJXar9Q).
2 Answers
If you can’t reach the main line, perhaps consider installing the filter directly on the cold line. You could then run a dedicated line to a separate drinking faucet on the countertop instead. It’s not as messy if the main line is hard to access!
It sounds like a tricky situation with that Hansgrohe faucet. You might want to check if your faucet has a hidden connection underneath, often accessible by removing a cover. If it’s really integrated, sometimes a professional plumber can demo the best way to access those lines.
Yeah, I had a similar issue with my faucet! It was integrated too, but I managed to find a small access panel beneath it. It was a game-changer for the installation.

That’s a solid idea! That way, you can still use your main faucet for regular water and have the new filter just for drinking. Much neater!