TABLE 6.

Test scores of samples’ mutagenicity using the T100 strain.

#	Plate	Concentration	Bacteria	Day 4	Day 5	Day 6
1	Blank –wS9 (tap water)	100%	-	0	0	0
2	Background wS9	-	+	19	21	23
3	Positive Control	-		54	64	68
4	WWTP effluent I	100%	+	30	35	38
5	WWTP effluent-I ws9	100%	+	26	29	30
6	WWTP effluent-II	19%	+	25	32	35
7	Tap water I	100%	+	29	33	39
8	Tap water-I ws9	100%	+	19	21	24
9	Tap water –II	19%	+	21	33	35
10	Bottled water ‘A’-I	100%	+	16	19	24
11	Bottled water ‘A’- I wS9-	100%	+	30	37	39
12	Bottled water ‘A’-II	19%	+	13	20	23
13	Bottled water ‘B’-I	100%	+	25	30	32
14	Bottled water ‘B’-I wS9	100%	+	19	23	26
15	Bottled water ‘B’-II	19%	+	15	17	23