Question

What are the properties of potable water?
(A) Free from harmful contaminants
(B) Replenished with natural minerals
(C) Alkaline pH balanced
(D)All of the above

Answer 1

Potable water is the one that is safe to drink and that is suitable for human consumption. Water should not contain fluoride ,metal ,lead ,bacteria which is harmful for the human body.

Complete step by step answer:
Potable means the safe for drink or that is fit to drink.
Potable water is referred to water that is believed to be fit for human consumption and is safe to drink.
Generally, what makes the water unfit to drink are:
Inorganic Pollutants: These consist of the mineral acids, inorganic salts, metals, cyanides and sulfates.
Radiological Threats: It includes radon, cesium, plutonium and uranium. In general, the presence of radioactive materials.
Organic Contaminants: Like Carbon-based chemicals involving pesticides and solvents generated through agriculture or industry discharge.
Waterborne Pathogens: Bacteria, viruses, protozoa and parasites that are mostly introduced to water through human wastes and can cause diarrhea, typhoid, etc.
Obviously, the water which is free from all of the above-mentioned things will be the safest water to drink.
So, potable water has properties like:
It is free from harmful contaminants.
It is clean and free from toxic substances.
It is free from fluorides, lead and is replenished with natural minerals.
Healthy alkaline pH of water is $7.5$ and $9.5$.Alkaline water helps to neutralize the store acids and helps to eradicate toxins.

So, the answer is Option D .

Note:
Potable water should be free from metals like lead but it should be rich in beneficial minerals like calcium, sodium and potassium because higher amounts of minerals in drinking water reduces the heart disease and cancer mortality rates.