Table 4.

Summary statistics for raw water samples collected from the two water treatment plants, Addis Ababa, Ethiopia, 2022.

Type of water source	PH	Temperature ($°C)$	TDS (mg/L)	UV-254 (Abs/cm−1).	chloride (mg/L)	NO3-(mg/L)	Res. Cl (mg/L) (0.2–0.5 mg/L)
Legedadi RWa	7.785 ± 0.28	22.7 ± 1.5	63 ± 3	89 ± 3.2	4 ± 3.5	6.1 ± 2.9	0.00
Gefersa RW	7.22 ± 0.28	19.7 ± 2.5	69 ± 4.2	93.6 ± 2.3	10.9±4.9%WSORL	3.2 ± 4.1	0.00
Groundwater source	7.68 ± 0.05	19.54 ± 0.21	105 ± 4.5	85.24 ± 0.49	10.04 ± 0.22	0.53 ± 0.06	0.05

^aRaw water _%WSORL = percentage of water source out of recommended limit.