According to Green Water Technologies, bacteria is always present. It is unavoidable and natural. Unfortunately, some bacteria do not sit well with humans. The types of bacteria depends on the source of the well.
Well water comes primarily from groundwater, which is water that is hidden underground. 40 million people in the U.S. have private wells, and, because these are not part of the municipal water system, it is the homeowner’s responsibility to ensure their water is safe to drink. Green Water Technologies says that starts by performing a simple water quality test. Most hardware stores sell these kits for $20 or less. Testing can alert to bacteria and other organic materials within that specific water source.
The type and volume of bacteria depends on the level of contamination and its food source. Some bacteria thrive when sulfur is present; other strains grow and multiply in highly oxygenated environments. All natural bodies of water contain microorganisms. Usually, these do not harm human health but contamination can change that.
Green Water Technologies asserts that contamination comes in many forms but is often the result of carelessness, negligence, or act of God. Sewage and agricultural runoff are common in well water. This is especially true in rural areas, which rely on septic plumbing and agriculture.
Bacteria are not the only concern, says Green Water Technologies. Viruses and protozoa may also leach into groundwater. These can cause illnesses such as polio, gastroenteritis, and cholera. The most effective method of combating these dangers is to install a water filtration system and to eliminate any breaches in the well.