Under the sink water filtration

On my last 2 TT and my current class A I had a built in "whole house" water filter along with the inline water filter. on the last TT I installed an under the sink filter with spigot. I haven't done it on the MH. not sure I will. if anything I would install a filter on the cold side of the faucet.

dodge guy wrote:
On my last 2 TT and my current class A I had a built in "whole house" water filter along with the inline water filter. on the last TT I installed an under the sink filter with spigot. I haven't done it on the MH. not sure I will. if anything I would install a filter on the cold side of the faucet.

I was thinking the cold side also instead of drilling another hole in the sink but my concern there is the reduced flow.

Depends on what you want to filter. I have long been a fan of under sink RO systems. I actually install them for people as a side line in my spare time. They work great for residential use, but that's a point not to miss. I had every plan to install an RO in our FW and after much deliberation changed my mind. They aren't very practical for RV use for a few reasons. They require a particular flow rate and PSI that a CG or your onboard water pump may not be able to provide. They produce waste water and the cheaper the unit the greater the amount but this can be as much as 2:1 gallons of RO to waste water. This means all that unused/untreated water end up in your grey tank. And if you are using onboard water you are using that and your pump to feed the RO and subsequently waste that water. They would have to be secured to keep them from moving, they take up a pretty much the whole cabinet so space is a consideration. They can't really be winterized so it would have to be removed to avoid freezing. I could go on and on. I just decided it wasn't practical for an RV. Instead I am looking at Berkey gravity fed RO systems. No plumbing at all. The downside is you have to fill it and wait for the water, but much, much less hassle in an RV.

Our truck camper came from the factory with an under-sink filter and extra spigot. We use it all the time and wouldn’t be without it.

wnjj wrote:
Our truck camper came from the factory with an under-sink filter and extra spigot. We use it all the time and wouldn’t be without it.

When you say filter, what do you mean? Is this an single in line filter and what does it filter? (Chlorine, Chloramine, dissolved solids, particulates, etc).

Most single in line filters like the Culligan RV-EZ-3 contain a particulate carbon filter that in their own words: "for the aesthetic reduction of Chlorine Taste and Odor" Certainly better than plain tap water but limited in what they actually filter.

That's why I asked the OP to clarify, what do you want to filter?

We use AP117 whole house filters from Waterdrop or Aqua-Pure to reduce sediment, chlorine, and rust. The filters are rated for 6 months or 12,000 gallons. We also use a PUR faucet mounted final filter for drinking water.

https://www.amazon.com/Waterdrop-Compatible-Aqua-Pure-Whirlpool-Reduction/dp/B07GYQV2T2/ref=dp_prsubs_3?pd_rd_i=B07GYQV2T2&psc=1

At our stick house we have an under counter filter to a separate spigot on the sink that required drilling another hole, of course.
My office has a countertop filter with a hose to a special adapter on the end of the faucet. pull out a plunger to get filtered water and it goes back to raw water when the water is shut off. Seems to work. Never tested the water, however. Relatively easy to install but it takes up some counter space.