Table 2.

The mean concentrations of protozoan (oo)cyst in raw and treated wastewaters

Wastewater treatment plants	† No. of protozoan (oo)cysts/L samples		Mean difference	P-value
	Influent	Effluent
WWTP1	1315.0 ± 414.2	245.0 ± 59.2	1070.0	0.010
WWTP2	1425.0 ± 377.5	237.5 ± 89.6	1187.5	0.004
WWTP3	1400.0 ± 141.4	200.0 ± 70.7	1200.0	0.027
SWWTP4	44500.0 ± 12449.0	8775.0 ± 694.6	35725.0	0.009
SWWTP5	40500.0 ± 3415.7	7700.0 ± 469.0	32800.0	<0.001

^†Mean ± SD.