Table 3.

Concentrations of DBPs in drinking water samples taken from the waterworks Berggården (Linköping) and Borg (Norrköping). The results cover target DBP concentrations at six different steps in the water purification process, three before and three after disinfection using sodium hypochlorite (NaOCl) at Berggården and monochloramine (NH₂Cl) at Borg

	Berggården						Borg
Compound	Raw water (μg L−1)	Sand filtration (μg L−1)	UV treatment (μg L−1)	Chlorination NaOCl (μg L−1)	Finished water (μg L−1)	Tap water (μg L−1)	Raw water (μg L−1)	Carbon filtration (μg L−1)	Sand filtration (μg L−1)	Chloramination NH2Cl (μg L−1)	Finished water (μg L−1)	Tap water (μg L−1)
Chloroform	< LOQ	< LOQ	< LOQ	7.1	8.2	9.0	< LOQ	< LOQ	< LOQ	0.3	0.4	0.4
Trichloroacetonitrile	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ
Bromodichloromethane	< LOQ	< LOQ	< LOQ	1.6	1.5	1.8	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ
Dichloroacetonitrile	< LOQ	< LOQ	< LOQ	0.3	0.3	0.3	< LOQ	< LOQ	< LOQ	0.07	0.08	0.09
1,1-Dichloro-2-propanone	< LOQ	< LOQ	< LOQ	0.3	0.2	0.2	< LOQ	< LOQ	< LOQ	0.3	0.3	0.4
Trichloronitromethane	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ
Dibromochloromethane	< LOQ	< LOQ	< LOQ	0.1	0.2	0.2	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ
Bromochloroacetonitrile	< LOQ	< LOQ	< LOQ	0.07	0.07	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ
1,1,1-Trichloro-2-propanone	< LOQ	< LOQ	< LOQ	0.2	0.2	0.2	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ
Bromoform	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ
Dibromoacetontrile	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ	< LOQ

< LOQ below limit of quantification