I recently found out my well water has total dissolved solids of 450 mg/L with the EPA recommended limit being 500. I haven't tested to see what the solids are ($225 test) but an RO system would remove them regardless. Was thinking of just getting an undersink model for drinking water only and I like the look/size/price of the Waterdrop models. I also don't think I want my TDS close to zero as I've read about the downsides of being that low so I was looking to also have a cartridge to add good minerals and possibly have my TDS around 100-150. Any thoughts or experiences would be appreciated.

I've had an ispring unit for a couple years with no complaints but it's a bulky unit. The waterdrop looks nice from a space saving standpoint.

I have one. I can't comment on the science or water content, since I don't know any of those things about my system. It was installed when we built the house and we've changed the filters since then.

What I do like is that the plumber placed it in the basement and plumbed it up to the kitchen sink. It makes servicing it easy since I can stand up to do it.

I have one mounted in the utility room and ran tubing to the kitchen and bathrooms. It's easy to change filters and out of the way. Note longer tube runs from the RO output to the tap decrease pressure and in some homes that could be an issue. Overall the RO system has worked well and we only need to change the filters once every few years.

A friend has worse water and installed a single, coffee can sized 'sediment filter' just after the water main coming into the house. The filter is under $8 at a local hardware store and he says it works well to pick up particles before they reach his RO system.

I installed one under the sink of our 5th Wheel RV. We had a whole house filter already, so the RO system was getting pre filtered water. Split the RO out line and added a RO line to our refrigerator ice maker.

We had a Kinetico K5 installed at the same time as our water softener system.

The water taste is pretty good. Had the system 17 months with 2 of us and it still isn't due for a filter change. I think it is about $75 for the 2 required filters.