Tap and WellTreasure Valley water, from the public record

Aquasana OptimH2O Reverse Osmosis + Claryum review

Under-sink reverse osmosis. Plumber recommended if you are not comfortable with a drain saddle and a tank. Not a whole-house solution. Listed to NSF/ANSI 58, NSF/ANSI 53, NSF/ANSI 42, NSF/ANSI 401, WQA/ANSI 401, WQA/ANSI 42, WQA/ANSI 53, WQA/ANSI 58.

What it removes

ContaminantEvidenceStated reductionScope
Total TrihalomethanesCertifiednot statedvoc surrogate
Total Dissolved SolidsCertifiednot stated
Nitrate (as N)Certifiednot stated
PFOSCertifiednot stated
Haloacetic Acids (HAA5)Certifiednot statedvoc surrogate
AsbestosCertifiednot stated
Total ColiformCertifiednot statedcyst
Mercury (inorganic)Certifiednot stated
1,2-Dibromo-3-chloropropaneCertifiednot statedvoc surrogate
FluorideCertifiednot stated
BenzeneCertifiednot statedvoc surrogate
PFOACertifiednot stated
Chlorine (residual)Certifiednot stated
ArsenicCertifiednot statedarsenic pentavalent
LeadCertifiednot stated
TetrachloroethyleneCertifiednot statedvoc surrogate
TrichloroethyleneCertifiednot statedvoc surrogate
PFHxSManufacturer-reported95%
PFNAManufacturer-reported95%
HFPO-DA (GenX)Manufacturer-reported95%
PFBSManufacturer-reported95%
UraniumManufacturer-reported95%
Radium 226 + 228Manufacturer-reported90%
Gross AlphaManufacturer-reported90%

Certified is an NSF, WQA, or IAPMO listing for that claim.

One drinking-water tap. Not a whole-house solution.

Certifications

  • NSF/ANSI 58: tds reduction (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 58: arsenic (pentavalent) (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 58: fluoride (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 58: nitrate/nitrite (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 58: lead (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 58: pfoa/pfos (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 58: pfoa/pfos (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: lead (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: mercury (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: asbestos (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: vocs (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: vocs (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: vocs (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: vocs (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: vocs (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: vocs (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 53: cyst (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 42: chlorine taste and odor (from the manufacturer's page, not yet checked against the certifier's database)
  • NSF/ANSI 401 (from the manufacturer's page, not yet checked against the certifier's database)
  • WQA/ANSI 401: Atenolol (listing checked 2026-09-14)
  • WQA/ANSI 42: Aesthetic Chloramine (listing checked 2026-09-14)
  • WQA/ANSI 42: Aesthetic Chlorine (listing checked 2026-09-14)
  • WQA/ANSI 42: Nominal Particulate Class I (listing checked 2026-09-14)
  • WQA/ANSI 42: Taste and Odor (listing checked 2026-09-14)
  • WQA/ANSI 53: Asbestos (listing checked 2026-09-14)
  • WQA/ANSI 53: Cyst (listing checked 2026-09-14)
  • WQA/ANSI 53: Lead (listing checked 2026-09-14)
  • WQA/ANSI 53: Mercury (listing checked 2026-09-14)
  • WQA/ANSI 53: Methyl Tert-Butyl Ether (MTBE) (listing checked 2026-09-14)
  • WQA/ANSI 53: Perfluorooctane Sulfonate (PFOS) (listing checked 2026-09-14)
  • WQA/ANSI 53: Perfluorooctanoic Acid (PFOA) (listing checked 2026-09-14)
  • WQA/ANSI 53: Turbidity (listing checked 2026-09-14)
  • WQA/ANSI 53: VOC (as chloroform) (listing checked 2026-09-14)
  • WQA/ANSI 53: VOC (as chloroform) (listing checked 2026-09-14)
  • WQA/ANSI 53: VOC (as chloroform) (listing checked 2026-09-14)
  • WQA/ANSI 53: VOC (as chloroform) (listing checked 2026-09-14)
  • WQA/ANSI 53: VOC (as chloroform) (listing checked 2026-09-14)
  • WQA/ANSI 53: VOC (as chloroform) (listing checked 2026-09-14)
  • WQA/ANSI 58: Arsenic (V) (300 ppb influent level) (listing checked 2026-09-14)
  • WQA/ANSI 58: Barium (listing checked 2026-09-14)
  • WQA/ANSI 58: Cadmium (listing checked 2026-09-14)
  • WQA/ANSI 58: Copper (listing checked 2026-09-14)
  • WQA/ANSI 58: Fluoride (listing checked 2026-09-14)
  • WQA/ANSI 58: Hexavalent Chromium (listing checked 2026-09-14)
  • WQA/ANSI 58: Nitrate (listing checked 2026-09-14)
  • WQA/ANSI 58: Nitrite (listing checked 2026-09-14)
  • WQA/ANSI 58: Radium 226/228 (listing checked 2026-09-14)
  • WQA/ANSI 58: Selenium (listing checked 2026-09-14)
  • WQA/ANSI 58: TDS (listing checked 2026-09-14)
  • WQA/ANSI 58: Trivalent Chromium (listing checked 2026-09-14)
  • WQA/ANSI 58: Turbidity (listing checked 2026-09-14)

Aquasana recommends a softener above 10 gpg.