Table 2. Summary of the chemical and bacterial contamination of the water sampling locations.

Source	Turbidity (NTU)	Chloride (mg/L)	Ammonia (mg/L)	Iron (mg/L)	Nitrite (mg/L as NaNO2)	Nitrate (mg/L as NaNO2)	MPN CFU/100ml	S. Paratyphi PCR positive (%)	S. Typhi PCR positive (%)
WHO*	0.5	250	1.5	0.3	3	50	0	-	-
1	0.5 (0.5, 2)	90.1 (82.2, 112)	0.2 (0.1, 0.4)	0.1 (0, 0.2)	0.04 (0.01, 0.15)	112.9 (98.3, 116.8)	33 (5, 3850)	25/40 (63)	30/40 (75)
2	0.5 (0.5, 1)	109.9 (89.1, 129.7)	0.2 (0.1, 0.33)	0.1 (0, 0.2)	0.02 (0.01, 0.06)	136.2 (119.6, 157.1)	1300 (207, 16750)	28/38 (74)	31/38 (82)
3	0.5 (0.5, 0.5)	83.2 (78.2, 88.1)	0.1 (0.1, 0.1)	0.1 (0, 0.2)	0.01 (0.01, 0.01)	142.7 (135.3, 158.5)	2 (1, 87)	38/51 (75)	40/51 (78)
4	58 (24.5, 115)	57.4 (55.4, 59.4)	10.5 (9.8, 11.2)	11.3 (8.7. 15.1)	0.06 (0.03, 0.13)	3.3 (1.25. 7.6)	1 (1, 2)	36/51 (71)	42/51 (82)
5	4 (2, 7.8)	87.1 (82.4, 94.1)	0.2 (0.1, 0.3)	0.2 (0.1, 0.3)	0.02 (0.01, 0.05)	117.7 (107.3, 127.2)	182 (6, 3025)	33/50 (66)	41/50 (82)
6	3 (2, 4)	169.8 (158.9, 174.6)	1.6 (0.9, 3.2)	0.12 (0.1, 0.5)	0.34 (0.19, 0.57)	191.1 (157.1, 204.5)	137 (7, 1700)	37/50 (74)	38/50 (76)
7	0.5 (0.5, 1)	83.2 (79.7, 90.1)	0.2 (0.1, 0.3)	0.01 (0, 0.2)	0.01 (0.01, 0.02)	93.3 (86.5, 106.0)	14 (2, 745)	39/51 (76)	43/51 (84)
8	2 (1, 2)	10 (9.9, 10.9)	0.1 (0, 0.2)	0.1 (0.1, 0.2)	0.01 (0.01, 0.01)	1.7 (1.6, 1.9)	1 (0, 1)	33/50 (66)	36/50 (72)
9	0.5 (0.5, 0.8)	66.3 (65.3, 68.3)	0.1 (0.1, 0.2)	0.01 (0, 0.2)	0.07 (0.05, 0.07)	94.1 (90.7, 96.3)	34 (7, 460)	15/21 (71)	13/21 (62)
10	0.5 (0.5, 0.6)	65.8 (64.1, 69.3)	0.1 (0, 0.2)	0.1 (0, 0.2)	0.02 (0.02, 0.05)	90.3 (82.4, 93)	31 (6, 2275)	19/30 (63)	19/30 (63)

*According to WHO guidelines [8], Data shown in medians and interquartile ranges unless described otherwise.