Classification of Drinking Water

Water is a non-renewable resource that we cannot survive without.

The recent drought in South Africa together with increasing water usage for Domestic, Industrial and Agricultural purposes are increasing the pressure on water resources in South Africa. More people are starting to use boreholes and other additional sources for domestic/household purposes.

It is import for everyone to know if the water they are using for drinking is safe to be used. We at Aquatico test water in our SANAS accredited laboratory to determine if the water is safe to use.
After analysing the water it is classified as fit to use according to the microbiological (bacteria), physical (conductivity, & pH) and chemical (salts, metal and organic chemicals) properties of the water.

We use the WRC Quality of Domestic Water Supplies and SANS 241-1:2015 Drinking Water limits to compare water against and also the WRC Domestic Use standard classification system to classify the water.

According to the WRC Domestic Use Standard, water quality can be classified as:

  • Ideal (Class 0)water will have no effect and is suitable to be used as drinking water by all users
  • Good (Class 1)water is suitable for all users and may have rare instances of sub-clinical effects
  • Marginal (Class 2)water may cause some effects in sensitive users and may have aesthetic effects
  • Poor (Class 3)water may pose risk of chronic health effects, especially with babies, children and elderly people and may have poor aesthetic effects
  • Unacceptable (Class 4)water quality may cause severe acute health effects, even when used over a short period of time

To summarise: Ideal and good water is safe to be used by all users, while marginal water is safe to be used by healthy individuals. Poor and unacceptable water quality is not fit to be used as drinking water by any users.

Should you be interested in testing your domestic water quality, or need any further guidance, feel free to contact us at quotes@aquatico.co.za.

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