chlorine

They included several types of phthalates, chemicals used to make plastics flexible; chloroform, a toxic byproduct from disinfecting water with chlorine; and toluene, a hazardous substance found in vehicle exhaust.

If your tap water is treated with chlorine, no additional treatment is necessary.

Currently the process releases a lot of poisonous chlorine gas.

Exposure to liquid or gaseous chlorine may cause irritation or burns to the skin and eyes, says PHE.

When the well water was treated with chlorine, those minerals formed dark-colored particles.