Table 4.

Correlations between parasitic pathogens, bacterial indicators, and physical-chemical parameters in water from different type of swimming pools in Beijing, China

	Crypto- sporidium	Giardia	HPCa	TCb	Urea	Turbidity	pH	Free chlorine
Crypto-sporidium	-	0.282c	0.163	0.184	0.569d	−0.139	0.080	−0.124
Giardia	0.282c	-	0.012	0.009	0.343d	0.060	−0.072	0.029
HPCa	0.163	0.012	-	0.829d	0.251	0.039	0.642d	−0.859d
TCb	0.184	0.009	0.829d	-	0.223	0.034	0.603d	−0.759d
Urea	0.569d	0.343d	0.251	0.223	-	0.104	0.109	−0.138
Turbidity	−0.139	0.060	0.039	0.034	0.104	-	0.009	0.110
pH	0.080	−0.072	0.642d	0.603d	0.109	0.009	-	0.157
Free chlorine	−0.124	0.029	−0.859d	−0.759d	−0.138	0.110	0.157	-

^aHPC, heterotrophic plate count.

^bTC, total coliform.

^cP<0.05 and

^dP<0.01 by Spearman’s correlation coefficient (2-tailed test).