1880 – Pierre Miquel devised the first exact method for enumeration of bacteria in water
Burdon-Sanderson in England in 1871 demonstrated the presence of bacteria in water; and Miquel at Paris in 1880 developed the first exact methods for enumerating them. In 1885, Percy Frankland used Koch’s procedures in a study of London water supplies and in 1887 Plagge and Proskauer reported on the bacterial purification effected by the filters…