John L. Leal, Date of Birth, Place of Birth, Date of Death
TweetJohn L. Leal
physician
Date of Birth: 05-May-1858
Place of Birth: Andes, New York, United States
Date of Death: 13-Mar-1914
Profession: physician
Nationality: United States
Zodiac Sign: Taurus 
About John L. Leal
- John Laing Leal (May 5, 1858 – March 13, 1914) was a physician and water treatment expert who, in 1908, was responsible for conceiving and implementing the first disinfection of a U.S.
- drinking water supply using chlorine.
- He was one of the principal expert witnesses at two trials which examined the quality of the water supply in Jersey City, New Jersey, and which evaluated the safety and utility of chlorine for production of "pure and wholesome" drinking water.
- The second trial verdict approved the use of chlorine to disinfect drinking water which led to an explosion of its use in water supplies across the U.S.
Read more at Wikipedia