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. 2014 Jan;20(1):70–77. doi: 10.3201/eid2001.120386

Table 2. Concentration of oocysts in drinking water before and after September 2007 installation of filtration system in Glasgow, Scotland, UK.

Location, period	Concentration of oocysts/10 L		Reduction, %
Location, period	Raw	Final	Reduction, %
Dundee
Before	0.000850	0.000439	48
After	0.001979	0.000115	94
Glasgow
Before	0.004219	0.001320	69
After	0.000855	0.000000	100