Potable water (more commonly known as drinking water) is water that is safe enough for drinking and food preparation. According to the World Health Organisation, 91% of the world’s population had access to an improved drinking-water source in 2015, compared with 76% in 1990. Furthermore, since 1990, 2.6 billion people have gained access to an improved drinking water source.
Treatment for the production of drinking water involves removal of contaminants from raw water to produce water that is pure enough for human consumption, without any adverse health effects. These contaminants can come in various forms, including fungi, viruses, algae, bacteria and minerals (e.g. iron).
The standard process for potable water treatment involves water from a lake, reservoir or river being transferred into a tank where coagulation, flocculation and clarification occurs. This is followed by sedimentation, where the heavy particles (floc) settle to the bottom, and the clear water moves to filtration. Here, the water passes through layers composed of sand, gravel and charcoal in order to remove even smaller particles. A small amount of chlorine is then added in order to disinfect and kill any bacteria or microorganisms that may be in the water.
SNF is recognised for its expertise in potable water treatment, and we offer a wide range of highly effective technical products (such as coagulants and flocculants) and services for the treatment of drinking water.