May 5, 1858: Birth of Dr. John L. Leal- a Hero Of Public Health

This Day in Water History

Dr. John L. Leal Dr. John L. Leal

May 5, 1858: 156th anniversary of the birth of John L. Leal, physician and water treatment expert who pioneered chlorine disinfection in the U.S. There are many unsung heroes who contributed significantly to public health at the turn of the 20th century. John L. Leal is one of them and after reading this, I think you will agree that he did more than most to save people’s lives.

John L. Leal was born in the small town of Andes, New York on May 5, 1858. His father, John Rose Leal was a physician who joined the 144th Regiment, New York Volunteers and fought in the Civil War. During the siege of Charleston, South Carolina, John Rose Leal contracted what was most likely a case of amoebic dysentery from contaminated drinking water. He suffered from the disease for more than 17 years before he finally…

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Introduction To Wastewater Microbiology

This 2 hour online class “Introduction to WasteWater Microbiology”, has ended but contact us for future dates.

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Designed for anyone who manages wastewater systems of any size or technology requiring monitoring of biological organisms – and is not only for large municipal systems. Using stunning phase contrast electron microscope images, this is an opportunity to see & appreciate minute living organisms which form the basis of treating and recycling water. Fee is $40 with the option to purchase, at $35, a CD of slides and video resources. CD Purchase Information attached here.