Organochlorine insecticide residues in water from five lakes of nainital (U.P.), India

Water samples from five lakes in the hilly area of the Nainital region of India were collected in March, July, and November 1994, and analyzed for DDT and hexachlorocyclohexane (HCH) content. All samples contained detectable levels of the insecticides. The lowest concentrations were found during Mar...

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Bibliographic Details
Published in:Bulletin of environmental contamination and toxicology 1998-02, Vol.60 (2), p.209-215
Main Authors: Dua, V.K, Kumari, R, Johri, R.K, Ojha, V.P, Shukla, R.P, Sharma, V.P
Format: Article
Language:English
Subjects:
AGUA
Applied sciences
DDT
DDT - analysis
Drinking water and swimming-pool water. Desalination
EAU
Environmental Monitoring
Exact sciences and technology
Fresh Water - analysis
HCH
Hexachlorocyclohexane - analysis
India
INSECTICIDAS
INSECTICIDE
INSECTICIDES
Insecticides - analysis
LAC
LAGOS
LAKES
Organic compounds
Pesticide Residues - analysis
Pollution
RESIDU
RESIDUES
RESIDUOS
UTTAR PRADESH
WATER
Water Pollutants, Chemical - analysis
Water Supply - analysis
Water treatment and pollution
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Summary:Water samples from five lakes in the hilly area of the Nainital region of India were collected in March, July, and November 1994, and analyzed for DDT and hexachlorocyclohexane (HCH) content. All samples contained detectable levels of the insecticides. The lowest concentrations were found during March, and the highest concentrations were found in July. Although the compounds are officially banned for agricultural use, and are not used for vector control, both were used in for malaria control. DDT concentrations were generally higher in the lakes surrounded by small farms than in the only lake surrounded by forest. Illegal use of DDT as an agricultural pesticide is common in the region. DDT levels in all lakes exceeded WHO standards for drinking water, and some of the July samples exceeded EC standards for HCH. Tap water in homes that are supplied with drinking water from the lakes contained levels of DDT and HCH that correlated with levels found in the supply lakes. All tap water samples had DDT levels in excess of the maximum permissible limit of 1 mu g/l.
ISSN:0007-4861
1432-0800
DOI:10.1007/s001289900612