NFCL thankful to beloved SIRS-Shri K.S RAJU, Shri US JHA Chairman, Shri RAHUL RAJU–MD , SHRI RM DESHPANDE, Shri R.RAGHAVAN, Shri GVS ANAND, SHRI VIJAY KUMAR (Site Incharge), Shri G.B.Rao Shri PVSN Raju, Dr. V. Sunny John, Shri KS Gunasekhar , Shri IVSN Raju.Shri MSRKS Prasad, Shri D.Mohanty , Shri Uma Maheswar Rao, Shri. LVV RAO, Shri. DV Reddy, Promotion- EHSQ-Industry by Dr. A.N. GIRI- SPECIAL THANKS TO BELOVED DYNAMIC MD-SHRI RAHUL RAJU SIR-25.1 LAKHS EHSQ Viewed.
Tuesday 20 November 2012
Water Pollution
Water pollution
is the contamination of natural water bodies by chemical, physical,
radioactive or pathogenic microbial substances. Adverse alteration of
water quality presently produces large scale illness and deaths,
accounting for approximately 50 million deaths per year worldwide, most
of these deaths occurring in Africa and Asia. In China, for example,
about 75 percent of the population (or 1.1 billion people) are without
access to clean drinking water. Widespread consequences of water
pollution upon ecosystems include species mortality, biodiversity
reduction and loss of ecosystem services. Some water pollution may occur
from natural causes such as sedimentation from severe rainfall events;
however, natural causes, including volcanic eruptions and algae blooms
from natural causes constitute a minute amount of the instances of
worldwide water pollution. The most problematic of water pollutants are
microbes that induce disease, since their sources may be construed as
natural, but a preponderance of these instances result from human
intervention in the environment (such as discharge of raw sewage) or
human overpopulation phenomena. One of the chief causes of water
pollution is agricultural activity where tillage practices, fertilizer,
pesticide and herbicide use create massive amounts of sedimentation and
chemical discharge to natural waters. Industrial discharges, by
contrast, have been greatly mitigated in Western Countries, but remain a
significant issue in developing countries.
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