WATER QUALITY

Water Quality

• Water MUST be free from poisonous salts (phosphates and nitrates) and harmful microbes. It can cause disease such as cholera and dysentery.
• Treatment:
• 1. Water passes through a MESH SCREEN -> to remove bits and twigs.
• 2. Chemicals are added to make solids and microbes STICK together and fall to the bottom
• 3. The water is then FILTERED through gravel beds to remove all the solids.
• 4. Water is CHLORINATED to KILL off any harmful microbes left
• Filters that contain carbon or silver to remove substances from their tap water.
• CARBON - Removes chlorine taste
• SILVER - Kill substances