Different minerals, chemicals and measurement devices are used for water treatment purposes. Some examples of those:

• Activated Carbon
• Ion exchange resins
• Cationic / Anionic / Mixbed resins
• Antracite
• Birm / Green sand
• Dolomite / Corosex
• Filter AG & Garnet & Quarts sand & Turbidex
• Siliphos
• Softener Salt
• Sodium Hypochlorite, Caustic, EDTA, antiscalant, etc
• Measurement kits and devices