Ground water is less susceptible to bacterial pollution than surface water because the soil and rocks through which ground water flows screen out most of the bacteria. Bacteria, however, occasionally find their way into ground water, sometimes in dangerously high concentrations.
Municipal Water (Tap Water) is used for things like bathing, watering gardens, cleaning, and cooking. The quality and reliability of municipally supplied tap water can vary from community to community. Water treatment is any process that improves the quality of water to make it more acceptable for a specific end-use. The end use may be drinking, industrial water supply, irrigation, river flow maintenance, water recreation or many other uses, including being safely returned to the environment.
If you are living in Large Apartment Building and you're using underground or Municipal water supply , then definitely use Apartment Water Filters & Purifier . You will need a good filtration system that can remove sediments, rust, chemicals, heavy metals, and microorganisms to protect your health as well as household appliances. It will be worth every single penny you spend on it.