Kirkland SignaturePurified Water
C· Minimal disclosurePurified (municipal) · US (Niagara + regional bottlers)
TDS
24 mg/L
pH
6
Price per liter
$0.40/L
Disclosure grade C — Minimal disclosure
This brand discloses only broad measures like TDS or pH. The mineral-by-mineral picture isn't published.
Mineral profile
| Analyte | mg/L |
|---|---|
| Calcium (Ca²⁺) | Not disclosed |
| Magnesium (Mg²⁺) | Not disclosed |
| Sodium (Na⁺) | Not disclosed |
| Potassium (K⁺) | Not disclosed |
| Bicarbonate (HCO₃⁻) | Not disclosed |
| Sulfate (SO₄²⁻) | Not disclosed |
| Chloride (Cl⁻) | Not disclosed |
| Silica (SiO₂) | Not disclosed |
| Fluoride (F⁻) | Not disclosed |
| Nitrate (NO₃⁻) | Not disclosed |
“Not disclosed” means the brand does not publish this value — that absence is itself a data point.
Packaging
PET plastic · 500 mL
~$0.20 typical retail for 500 mL
Provenance
Official WQR; additive names listed, mg/L not disclosedLast verified 2026-07-17
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