POLLUTION THREAT TO WATER SUPPLIES OF MADRAS AND ITS ENVIRONS DUE TO IMPROPER
SITING OF A MODERN SLAUGHTER HOUSE
By
Prof.T.Shivaji Rao*,
Professor of
Environmental Engineering, Andhra
University, Waltair(AP)
In response to the news reports
based on the paper “Threat to Water supply and Environment of Madras due to
improper location of a modern slaughter house” presented at a seminar in the
city on 21-7-1984, by me, the Chief Secretary to the Government of Tamil Nadu
held a press conference on 27-1-1984 and stated that there is no pollution
threat from the slaughter house. He is
reported to have said that there is absolutely no possibility of any wash water
entering any of the water sources even in the worst of rainy seasons. It has been claimed that the topography of
the site itself ruled out the possibility of the effluent or wash water
entering the water supply channels to cholavaram and Redhills lakes. Pollution to the water supply installations
of the neighbouring Military Engineering Services were ruled out as the
effluent plant had been shifted 600 meters farther than its original proposed
location.
In order to verify if there is
any scientific reasoning in support of the claims made by the Chief Secretary,
I have made an extensive personal examination of the whole area and found that
the effluents from the proposed slaughter house even after the use of the best
available pollution control technology will definitely pose a serious threat to
the drinking water sources of Madras.
Even after shifting the site for the effluent treatment towards South
West of the proposed site, the effluents will join the tank opposite
Vanianchatram and then they spill into the upper supply channel through the
swamp drains on the East and the Boosikal drains on the west of Poochiathipedu, 10km. to the west of
Redhills lake on the road of Tiruvellore. A casual physical observation of the
topography of the land and water-courses around Koduvalli site even by a layman
reveals that the effluents inevitably pollute cholavaram lake since the ground
level of about 30 meters at the site falls down to about 20 meters towards
Cholavaram lake within about 3 km distance on the East and to about 25 meters
towards the swamp drains and Boosikal drains that empty into the upper supply channel
within 2km on the west. (See map enclosed).
Thus, the treated effluent from
the proposed slaughter house invariably pollutes not only the Cholavaram lake
but also many drinking water wells and important tanks like the ones opposite
Vanianchatram and Alamadhi villages during heavy rains. Moreover, damage will
be caused to hundreds of acres of good paddy fields, the duck-rearing industry
and, the health and welfare of the thousands of animal and human populations in
many villages in between Boosikar drain and Cholavaram lake. These
facts clearly show that the authorities have never made not only any
indepth studies on these basic issues but also did not even care to consult their
own irrigation engineers and other eminent environmental and ecological experts
who could have easily pointed out these obvious and fundamental defects made in
selecting the site for such an offensive trade.
The other comments on the false claims made by the authorities on this
crucial problem are also presented here.
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*Paper presented at the Seminar
organized by Public Relations Society of India, Tamil Nadu Chapter and Tamil
Nadu Pollution Control Board on “The Environment in 2001AD” held on 21-7-84 at
Cholai Hotel Madras in its working session_III Rural Environmental Development
under the chairmanship of Mr.M.Ahmed, IAS, commissioner and Secretary,
Department of Environmental Control, Government of Tamil Nadu.(Chairman:APState
Committee on Ecological Survey of Kolleru Lake, Vice-President:AP Natural
History Society, Visakhapatnam and Honorary Environmental Adviser:Municipal
Corporation, Visakhapatnam.
I. INTRODUCTION: The citizens of Madras
are likely to be confused over the crucial matter of pollution threat to the
water supply systems of Madras
and its environs due to location of a modern slaughter house close to
Cholavaram lake in watershed of Redhills reservoir. It is not the industry per se but its
improper location within close proximity to drinking water sources, cattle farm
and human habitations within fragile eco-systems that is causing serious
concern. While the ecologists visualize
serious health hazards due to inevitable
contamination of the local environment at Koduvalli in the vicinity of
the plant, the officials reiterate their promise to take all measures to
minimise pollution without comprehending the long range implications of their
promises on the environment. As the
Government of Tamil Nadu have a keen sense of responsibility for public
welfare, it is necessary, at this juncture, to keep the public and the
Government informed about the scientific aspects of this crucial problem that
is viewed by the officials with the proverbial blindness approach to the
elephant.
II.CONFLICTING CLAIMS OF OFFICIALS: When the committee on
industries under the chairmanship of the Secretary to the Government met to
discuss about the environmental impact of the slaughter house, some members are
reported to have warned that the effluents would by over-flow or drainage
pollute the Cholavaram lake, some other members stressed the need to prevent
surface and ground water pollution, besides control of stinking odours,
insects, mosquitoes, birds, rodents etc. which will cause public nuisance, in
the light of factors such as the laterite soils and high water table in some
areas.
It is surprising that while the
chairman is reported to have agreed with the condition, perhaps laid down by
Pollution Control Board, that there should not be over-flow of effluent that
would gain access into the nearby drinking water sources like Cholavaram lake,
he could not spell out what concrete steps are proposed to be taken to achieve
that objective on the basis of proven technology under Indian conditions. It has also been suggested that the
Corporation authorities shall agree to provide for alternative effluent
disposal methods, if the measures adopted proved to be defective or deficient
at a later date. It means that the
officials are not sure that their proposed measures are really safe and
reliable. In our daily life, we find that even a layman seeks professional
advice from a lawyer on legal affairs and a doctor on medical matters and not
vice-versa. As such, the procurement of
a no objection certificate from the committee on industries that never seems to
have consulted all the concerned environmental experts does not give a
guarantee that there will not be any public health hazards due to the siting of
the slaughter house at Koduvalli.
III. WATER SUPPLY PROVISIONS IGNORED: While the promotion of the
sanitation of water sheds is one of the prime objectives of any water supply
agency for maintaining the quality of the raw and treated water, it is
surprising that the Madras Metropolitan Water supply and Sewerage Board chose
to wink at the impending pollution threat to their lake waters against the
spirit of sections 5,6,54 and 59 of their water supply and sewerage act, 1978
even during the third year of the International Drinking Water Supply and
Sanitation decade. It is all the more
shocking that the Tamil Nadu Pollution Control Board which should prevent
pollution of water courses have approved the site even though it is close to
the major drinking water supply lake.
IV. CONTAMNATION OF MILITARY WATER WORKS: The Military Engineering
Water Purification Plant is adjacent to the slaughter house under
construction. Even though the effluent
treatment plant is shifted by 400 meters into an area across the south of the
road, it will not ensure the safety of the water supplies. Although the Corporation proposes to cover
the filter beds to protect them from bird droppings, the water quality is bound
to be impaired since the large uncovered settling tanks on either side of the
filter house will be heavily contaminated with infectious material transported
by migratory birds, insects and dust from the premises of the stock yards, the
slaughter house and the local environment polluted due to the impact of the new
plant. Sometimes even the accidental
fall of infected birds, insects etc.; in the open settling tanks will pose
serious threat to the safety of the water.
Filter beds and chlorination plants can not always ensure safe water
supplies when disease producing viruses and microbial populations contaminate
the water during its purification.
Moreover, the raw water for purification is drawn from the site, and
hence it is likely to be contaminated in a similar way.
Under these circumstances it is
difficult to understand how the authorities could ascertain and confirm that
there would be no pollution to the Military Engineering Water Supply Systems
even though both the raw water and partly treated waters are liable to be
contaminated. The concerned Military
officers should have consulted the environmental experts before the reported
dropping of their genuine objections against the improper siting of the
slaughter house in the neighbourhood of their sensitive water works.
V. THREAT TO CENTRAL CATTLE BREEDING FARM: The Central Cattle
Breeding Farm intended to supply the most coveted Murra bred buffaloes will
become the most vulnerable target due to its location within 1-2km from the
slaughter house. Many new diseases that
surface in this area will affect both animal and human populations.
For instance, the foot and mouth
disease, pox, blue tongue and Rinderpest viral diseases will cause damage to
the cattle population as pathogens are not only wind-borne but are also
transmitted by the insects, flies, birds etc. Kerato-conjuctivities,
Anaplasmosis, Salmonellosis etc are transmitted by other dust, flies, insects
or rodents. Tuberculosis,
Pasteurellosis, Actinomycosis, Hydatidosis, Cysticercosis and Trichinosis occur
among cattle, sheep and pigs.
Many sheep and cattle imported
from other districts may be in the incubative or carrier state of a contagious
disease or heavy loads of infectious material that may be transported by
dust-laden air, insects, midges, ticks, flies and rodents into the
cattle-breeding farm andother villages, leading to a constant interchange of
disease producing organisms among the birds, insects, domestic animals, and
human populations and the environment in the locality. This aspect must be considered seriously as
the slaughter house complex is provided with cattle and sheep lairages markets
etc. Healthy or inapparent carriers of
infection among the healthy sheep and cattle most often defy the detection by
known methods including serological and microbiological procedures. Under the existing conditions of anti-mortem
and post-mortem examinations in our states, it may not always be possible to
check infection among the animals. Under
the circumstances it is now known why and how the Direction of Central Cattle
Breeding Farm is reported to have quietly dropped his genuine objections
against the location of the slaughter house in close proximity to his cattle
breeding farm.
VI. INDECISION ON LOCATION OF AUXILIARY UNITS: It is not yet known
whether a decision has been taken by the authorities on the location of the
site for the rendering plant and garbage
disposal and its impact on the local environment. Similarly the measures proposed to ensure
absence of atmospheric pollution in the environment are still unknown. This state of affairs indicate that the
relevant environmental experts and the people who will be affected by the
industry are not at all taken into confidence unlike in the developed
democratic countries of the West.
VII. UNRELIABILITY OF MEASURES FOR POLLUTION CONTROL: It is
surprising that while the chairman is reported to have agreed with the
condition, perhaps laid down by Pollution Control Board, that there should not
be over-flow of effluent that would gain access into the nearby drinking water
sources like Cholavaram lake, he could not spell out what concrete steps are
proposed to be taken to achieve that objective on the basis of proven
technology under Indian conditions. It
has also been suggested that the Corporation authorities shall agree to provide
for alternative effluent disposal methods, if the measures adopted proved to be
defective or deficient at a later date.
It means that the officials are not sure that their proposed measures
are really safe and reliable. In our
daily life,we find that even a layman seeks professional advice from a lawyer
on legal affairs and a doctor on medical matters and not vice-versa. Such a sorry state of affairs indicates that
the project authorities must have presented the project as a faith accompli and
the officrs had perhaps no option except to lend their unwilling consent. As such, the procurement of a no objection
certificate from the committee on industries that never seems to have consulted
all the concerned environmental experts does not give a guarantee that there
will not be any public health hazards due to the siting of the slaughter house
at Koduvalli.
VIII. HAZARDS INSPITE OF TREATMENT: As 1.5 million litres of wash
water a day is proposed to be treated and used for irrigation on clayey soils,
there is a danger of water-logging, leading to abundant breeding of mosquitoes
that inevitably cause frequent epidemic outbreaks of Malaria, Brain-fever and
Filaria in the locality. The effluents
treated by anaerobic and aerobic plants are bound to contain considerable
amounts of organic and inorganic matter including grease particularly under the
existing conditions of the operation of such plants in India. Consequently the soil layers become sick
after prolonged irrigation resulting the stagnation of effluents with the
concomitant gradual over-flows inevitably joining the Redhills lake not only
during the storms but also at other times.
Mere spending of lakhs of rupees
on effluent treatment will not be in tune with the basic environmental
protection philosophy since pollution abatement basically envisages preventive
action as against curative measures which impose not only an avoidable burden
upon the poor tax payer but also prove costly, ineffective and counter
productive in the long run. In support of the frequent failure of the
sophisticated pollution control technology in India, mention may be made of
major chemical, distillery, fertilizer and paper plants that have installed
pollution control equipments worth crores of rupees but failed to produce
effluents that confirm to standards prescribed by Pollution Control Boards for
ensuring safety of surface water courses.
IX. INVEITABLE POLLUTION INSPITE OF CONSULTANTS: Since a liquid flows from a higher level to a
lower level, the treated but yet harmful effluents let on the clayey soil for
irrigation mostly flow over the land and ultimately reach the nearby
water-courses, which in this case happen to be the Cholavaram and Red Hills
lakes.
The claim of the officials to
have engaged renowned consultants of Bombay
does not help to improve the watershed sanitation of the Cholavaram lake as
international experts proved that in over land flow systems on clayey soil upto
80% of the effluent applied for irrigation will return as run-off. Such a return contains coliforms and other
pathogens, even after treatment.
X. SITING AS A TOOL FOR ENVIRONMENTAL PROTECTION: Since there are
thousands of people and cattle in the villages around Koduvalli, the concerned
state officials should have properly assessed the public health hazards arising
from the location of this slaughter house and advised the Meat Corporation
officials properly in selecting a suitable site on the sea-coast near Madras.
If the inland water courses, the
pathogens and coliforms contained in the effluents will proliferate on a large
scale and damage the natural water sources.
But when such effluents are discharged into sea, the saltish environment
thwarts the growth of such pathogens and coliforms but utilizes the organics
and plant nutrients for increasing the population of prawns and fishes,
resulting in the generation of more protein wealth from harmful organic wastes.
Having taken into consideration
the inherent handicaps in pollution control from slaughter house all over the
world and all the relevant factors that govern the selectionof site for such
offensive trades, the international agencies like FAO and WHO laid down the
criteria that slaughter houses should be located close to the sea or a large
river but far away from human habitation not only to ensure hygienic conditions
in the plant and out side but also the generate wealth from the wastes.
XI. SHIFTING SLAUGHTER HOUE
TO ALTERNATE SITE: The Madras Corporation as early as 1957 published a
report on the Madras
city Water Supply Systems and their catchments wherein they have shown the
plans of the areas that directly drain into the Cholavaram, Red Hills
lakes. A mere glance even by an
uninitiated individual into the
environmental issues clearly shows that the proposed slaughter house glaringly
stands within this catchment area. This
by itself speaks volumes for the need to have a scientific and a serious second
look into the matter as the drinking water of the city population and the army
personnel, the health of the nearby villagers and their live-stock and the
murra buffaloes of the Central Cattle Breeding Farm become vulnerable targets.
The selection of site at Koduvali
is evidently based on considerations other than ecological conservation and
public health protection, as envisaged in the Articles 47 to 51-A of the
Constitution. The coast-line to the North of Ennore, and sites on rivers like
Goovum intended for transport of noxious effluent discharge into the sea should
have been thoroughly explored for location of this modern slaughter house that
gets expanded in course of time. The
present site does not provide even ground water nor is it good for proper
treatment and disposal of effluents.
Hence, there is a good case even today to shift the slaughter house from
koduvalli and modify the structures under construction to locate a
non-polluting electronics or electrical industry not only to protect the drinking water sources but also the
cattle breeding farm and the environment of the local villagers.
XII. APPEAL FOR PUBLIC ENQUIRY: In view of the above scientific reasons and
also the inherent handicap of the project authorities to appreciate the
fundamentals of environmental planning aimed at Development without
destruction, a slogan of the UNI appeal to the experts and officials not to
mislead the Chief Minister who takes public health and welfare to his hart. On the other hand, I appeal to them to help
the Chief Minister to refer this crucial issue to a committee of Environmental
experts, including the experts of the Union Ministry of Defence, Agriculture
and Environment Director of the National Environmental Engineering Research
Institute and Chairman of the Central Water Pollution Control Board so that they can hold a public enquiry and
advise the state Government in the matter.
The enlightened citizens of Madras cannot be used as
the Guinea-pigs by the officials and
experts in their experiments to find whether even accidental pollution from a
major offensive trade will cause any public health hazards and ecological
disruptions in the region. By their
inaction, they should not create an impression to others that they are willing
partners in this naked rape of their natural eco-systems. The legal luminaries of Madras may have possibility for the conduct
of a non-judicial enquiry into the matter.
Since the health and welfare of even the future generations will be at
stake, I appeal to the enlightened citizens of Madras to study the problems in depth and
represent to the Government on the need to protect their health and environment
as envisaged by the relevant provisions of our constitutions.
(Subsequently circulated by
Prof.T.Shivjai Rao at the Press Conference organized by the Environmental
Society at the office of the Environmental Society, Besant Gardens,
Besant Avenue, Madras-600 000 on 7-9-1984 under the Chairmanship of
Mrs.Radha Burnier, President of Theosophical Society, Adayar,Madras.)