Detection of Free-Living Amoebae Using Amoebal Enrichment in a Wastewater Treatment Plant of Gauteng Province, South Africa

Table 3

Concentrations of free residual chlorine at different sampling points.

Sample source	Free chlorine residual (mg/L)
	Ranges	Means
Effluent	0.05–1.10	0.37
Maturation pond 1	0.02–0.07	0.04
Maturation pond 2	0.01–0.05	0.03
Maturation pond 3	0.01–0.05	0.03