Evaluation of Occurrence, Concentration, and Removal of Pathogenic Parasites and Fecal Coliforms in Three Waste Stabilization Pond Systems in Tanzania

Table 7

Spearman’s rho correlation test results for physicochemical parameters and microorganisms (including helminths).

Parameter	Helminths (eggs/L)			Protozoa ((oo)cysts/L)		FCs (cfu/100 ml)
	n	r		r		r
COD (mg/L)	12	0.71	0.009	0.78	0.003	0.53	0.079
TSS (mg/L)	12	0.59	0.041	0.48	0.118	0.48	0.137
TN (mg/L)	12	0.74	0.005	0.26	0.421	0.26	0.420
pH	12	−0.594	0.042	−0.71	0.010	−0.57	0.055
Temperature (°C)	12	-0.367	0.241	−0.57	0.054	−0.50	0.094

Note. COD = chemical oxygen demand; TSS = total suspended solids; TN = total nitrogen; n = number of datasets; r = Spearman’s correlation coefficient. is significance level.