Skip to content
Compare
Brands
Learn
Best for
About
The elements of water.
Tap an element to learn what it means.
Basics
1
TDS
Dissolved solids
2
pH
Acid or alkaline
Minerals
3
Ca
Calcium
4
Mg
Magnesium
5
Na
Sodium
6
K
Potassium
7
HCO₃
Bicarbonate
8
NO₃
Nitrate
9
SiO₂
Silica
10
SO₄
Sulfate
11
Cl
Chloride
Water types
12
Mi
Mineral water
13
Sp
Spring water
14
Pu
Purified water
All guides
What is TDS in bottled water?
2 min
What pH means in drinking water
1 min
Mineral vs spring vs purified water
2 min
What each mineral in water does
2 min
Explainers with official sources. Not medical advice.