The 2-stage whole house systems are great for reducing sediment and taste and odor out of your water before reaching your appliances, showers, bathroom fixtures, etc. It's important to have a whole house system to help preserve your appliances.
BBFS-22 Big Blue Water Filter System with mounting bracket for whole house water filtration
The 2-stage whole house system can use any of these filters:
Whole House Big Blue Water Filters and 20 Inch Big Blue Sediment Filter and Drinking Water Filter
The recommended confirmation is:
DGD-5005-20 Water Filters and Pentek DGD500520 Sediment Filter for 20 inch Big Blue Whole House Housings - Stage 1 - 5 micron sediment filter
NCP-20BB carbon filters and Pentek NCP20-BB water filter cartridge 155382 for drinking water treatment - Stage 2 - 10 micron carbon filter
However, this is not good enough for drinking water. RO systems and under sink drinking water systems reduce more contimants than whole house systems. The flow rate is very slow for drinking water systems which is why a separate drinking water faucet is needed. In order to reduce contaminants like lead, atrazine, lindane, etc., more contact time is required which slows the flow rate of the water down. These contaminants don't need to be reduced for a whole house but should be reduced for drinking water.