References
- APHA . 1985 . Standard methods for the examination of water and waste water, , 16th edition , 1268 APHA, AWWA, WPCF .
- Close , M. E. 1992 . An assessment of pesticide contamination of groundwater in New Zealand , DSIR Geophysics Division Research Report 238 38
- Close , M. E. 1993 . Assessment of pesticide contamination of groundwater in New Zealand. 1. Ranking of regions for potential contamination . New Zealand journal of marine and freshwater research , 27 : 257 – 266 .
- Cohen , S. Z. 1989 . Agricultural chemical news . Groundwater monitoring review , Fall : 57 – 64 . 1989
- Cohen , S. Z. 1992 . Agricultural chemical news . Groundwater monitoring review, Spring , 1992 : 90 – 91 .
- Dourson , M. L. and Jordan , W. L. 1989 . How “safe” is the groundwater Americans drink? . Groundwater monitoring review , Fall : 13A – 1 . 1989
- Downes , M. T. 1978 . An improved hydrazine reduction method for the automated determination of low nitrate levels in freshwater . Water research , 12 : 673 – 675 .
- EC . 1980 . Directive 80/778. On the quality of water intended for human consumption , Publication of European Communities L229/11
- Fawcett , R. S. 1989 . Pesticides in ground water‐solving the right problem . Groundwater monitoring review , Fall : 5 – 8 . 1989
- Klaseus , T. G. , Buzicky , G. C. and Schneider , E. C. 1988 . Pesticides and groundwater: surveys of selected Minnesota wells , 95 Minnesota Department of Health and Minnesota Department of Agriculture .
- McSwain , M. R. , Watrous , R. J. and Douglass , J. E. 1974 . Improved methyl thymol blue procedure for automated sulfate determinations . Analytical chemistry , 46 : 1329 – 1331 .
- NZ BoH . 1984 . Drinking water standards for New Zealand , A report prepared for the Board of Health by the Department of Health 48 Wellington
- Priddle , M. W. , Jackson , R. E. and Mutch , J. P. 1989 . Contamination of the sandstone acquifer of Prince Edward Island, Canada, by aldicarb and nitrogen residues . Groundwater monitoring review , 1989 Fall : 134 – 140 .
- Spalding , R. F. 1989 . Complexities associated with the interpretation of trace pesticide levels in groundwater . Groundwater monitoring review, Fall , 1989 : 79 – 80 .
- Spalding , R. F. , Burbach , M. E. and Exner , M. E. 1989 . Pesticides in Nebraska's groundwater . Ground‐water monitoring review , Fall : 126 – 133 . 1989
- US Geological Survey . 1979 . Methods for the determination of inorganic substances in water and fluvial sediments 626
- USEPA . 1989 . Drinking water health advisory: Pesticides , 819 Chelsea, MI : Lewis Publishers .
- USEPA . 1990 . National survey of pesticides in drinking water wells 98 Phase 1 report. EPA 570/9–90–015