Culligan ISH-100 Inline Shower Filter review
Shower filter. DIY. No plumbing. Listed to IAPMO/ANSI 177.
What it removes
| Contaminant | Evidence | Stated reduction | Scope |
|---|---|---|---|
| Chlorine (residual) | Certified | not stated |
Certified is an NSF, WQA, or IAPMO listing for that claim.
Shower only.
Certifications
- IAPMO/ANSI 177: Free Available Chlorine Reduction (from the manufacturer's page, not yet checked against the certifier's database)
Inline filter that sits between the 1/2-inch shower arm and your existing showerhead (no showerhead included). Uses the WHR-140 KDF cartridge, 10,000 gal or 6 months, 1.8 gpm. Manufacturer reduces claim: chlorine, sulfur odor, scale. Manufacturer page (culligandiy.com) states only 'IAPMO R & T Tested and Certified' without naming the standard; the NSF/ANSI 177 free-chlorine wording and the 97% chlorine figure appear on the Amazon listing, not on the fetched manufacturer pages, so reduction_pct is null. Not in NSF database (nsf.py 'Culligan' 177). annual_replacement_cost est. from WHR-140 $16.98 on Amazon x 2/yr.