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Culligan Undersink Water Filters
Culligan Undersink Water Filters
This collection carries complete Culligan undersink filtration systems. If you only need a replacement cartridge, see Undersink Water Filter Replacements.
Culligan's "level" naming reflects the number of filtration stages, not the size:
- US-600 Slim: an entry-level, space-saving system.
- US-EZ-1 (Level 1): basic sediment and chlorine taste and odor reduction.
- US-EZ-4 (Level 4): the most filtration stages in the lineup, targeting a broader range of contaminants.
- 1000R-D: built for RV and marine use.
Choose Level 1 if taste and odor are your main concern, or Level 4 for more complete drinking-water filtration. Not sure? Call 1-800-277-3458.
