International Rainwater Catchment Systems Conference
Mannheim, Germany - September 2001
Rainwater: Quality Issues
Implications of Widespread Use of DRWH: Mosquito Control
P.K. Mittal, Namrata Pathak, Padma Vasudevan, Terry Thomas
Centre for Rural Development & Technology
Indian Institute of Technology, Delhi
Mosquito borne diseases like malaria and dengue are of
primary concern, especially in tropical countries. It is well known that
the availability of stagnant water generally leads to mosquito breeding.
Hence in considering health issues related to DRWH, the risk of mosquito
breeding and consequent spread of diseases borne by them need to be evaluated.
Measures have to be taken to minimise the risk. Under an EU sponsored
project, special features required for reducing the risk of mosquito breeding
in DRWH design, were studied.
Denying access to water is universally effective in controlling
breeding of all mosquito species. Preventing stagnation of water on the
gutter and putting up suitable barriers for barring the entry of adult
mosquito into DRWH are most useful, but not always feasible. If, in spite
of preventive measures, mosquito enters the storage tank, appropriate
measures for deterring ovi position and larval growth have to be considered.
Accordingly, the following three aspects were examined:
- Barriers for preventing the approach of adult mosquitoes to water
- Quality of water and other parameters which discourage or encourage
ovi-position and larval growth.
- Treatment of water in storage for control of breeding.
Some of the results are discussed herein.
PDF of full document (4pp, 27kb)
|Note: The IRCSA proceedings
section is still new and under active management, If you find any problems,
ommissions or corrections please contact
the administrator so we can put things right.