Table A2-3: Treatment efficacies for agrichemical contaminants of health significance

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Table symbols: * limited removal; ** more than 50% removal; *** more than 80% removal.

Where a < value is noted in the table, this is the minimum concentration (mg/L) that can be achieved by the process, even if the combination of initial concentration and percentage removal indicate that a lower concentration can be achieved.

Table A2.5:Treatment efficacies for cyanotoxins

Contaminant	Coagulation	Precipitation softening	Membrane filtration	Activated carbon	Air stripping	Ion exchange	Diatomaceous earth	Chlorination	Ozonation	Chlorine dioxide treatment
Alachlor			*** <0.001	*** <0.001					**
Aldicarb			*** <0.001	*** <0.001				*** <0.001	*** <0.001
Aldrin + dieldrin	**		*** <0.00002	*** <0.00002					*** <0.00002
Atrazine	*	**a	*** <0.0001	*** <0.0001			*b	*c	***a
Azinphos methyl									**d
Bentazone
Bromacil
Carbofuran		***c	*** <0.001	*** <0.001		*		*c
Chlordane		*e	*** <0.0001						*** <0.0001
Chlorotoluron			*** <0.0001						*** <0.0001
Chlorpyriphos							***b
Cyanazine			*** <0.0001	*** <0.0001
2,4-D	*			*** <0.001					*** <0.001
2,4-DB
DDT + isomers	*** <0.0001		*** <0.0001	*** <0.0001				*	*
Diazinon									***f
1,2-dibromo-3‑chloropropane				*** <0.0001	** <0.001
1,2-dibromoethane				*** <0.0001	*** <0.0001
1,2-dichloropropane			*** <0.001	*** <0.001
1,3-dichloropropene
Dichlorprop
Dimethoate				**				*** <0.001	**
Diquat
Diuron								**g	*h
Endrin	*			*** <0.0002
Fenoprop
Heptachlor and its epoxide
Hexachlorobenzene
Hexazinone
Isoproturon			*** <0.0001	*** <0.0001				**	*** <0.0001
Lindane				*** <0.0001					**
Malathion
MCPA				*** <0.0001					*** <0.0001
MCPB
Mecoprop				*** <0.0001					*** <0.0001
Metalaxyl
Methoxychlor	**			*** <0.0001					*** <0.0001
Methyl parathion							**b		*f
Metolachlor				*** <0.0001					**
Metribuzin								***c		**c
Molinate
Oryzalin
Oxadiazon
Pendimethalin
Pentachlorophenol				*** <0.0004
Permethrin
Picloram
Pirimiphos methyl
Primisulfuron methyl
Procymidone
Propanil
Propazine		**a
Pyridate
Pyriproxifen				*** <0.001
Simazine		**a	*** <0.0001	*** <0.0001				*	**
2,4,5-T	**			*** <0.001					*
Terbuthylazine	*			*** <0.0001					**
Thiabendazole
Triclopyr
Trifluralin			*** <0.0001	*** <0.0001
1080

References Table A2.3:

a Jiang and Adams, 2006, Wat. Res., 40, 1657–1667

b Agdi et al., 2000, J. Environ Monit., 2, 420–423

c Miltner et al., 1989, J. Am. Wat. Wks. Assn., 81(1), 43–52

d Ong et al., 1996, Food Chem., 55,153–160

e Westerhoff et al., Environ. Sci. Technol., 39, 6649–6653

f Wu et al., 2007, Food Control, 18, 466–472

g El–Dib and Aly, 1977, Wat. Res., 11, 611–616

h Amir Tahmasseb et al., 2002, Sci. Total Environ., 291, 33–44

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