Purifying the Ganga
"The story of the Ganges, from her source to the sea, from old
times to new, is the story of India's civilisation ..." - Jawaharlal
Nehru
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UDAY SHANKAR
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IT may have been this emotive encomium to the Ganga
that motivated Nehru's grandson, Rajiv Gandhi, to undertake India's most
ambitious environmental clean-up programme ever. Launching the Ganga
Action Plan (GAP) in Varanasi on June 14, 1986, Gandhi, then prime
minister, of India, stated confidently, "We shall see that the waters
of the Ganga become clean once again."
The task was ambitious indeed: to improve water quality so as to permit
safe bathing all along the 2,525 km of the Ganga, from its origin in the
Himalaya to the Bay of Bengal, and to make it potable at important pilgrim
and urban centres on its banks.
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Beginning with Rishikesh, where the Ganga enters the UP
plains and begins to be contaminated by municipal and industrial effluents, GAP
was designed to intercept and divert untreated sewage currently flowing into the
river to treatment plants. The plan also involves devising low-cost sanitation
systems to prevent the river bank from being used as a latrine or garbage dump
and to build electric crematoria that would offer an alternative to disposing
the dead by casting the bodies into the Ganga.
Although industrial effluents constitute only about 15 per
cent of the waste discharged into the Ganga, its toxicity is cause for concern.
So GAP strategy involves indentifying the major polluters and attempting to
persuade them to clean up their act by offering government loans for the
setting-up of treatment plants
Under this programme, 68 "gross pollutants" were
identified from more than 450 major industrial units.
The scheme met with instant popular approval because the river is culturally
important -- no Hindu religious ceremony is complete without the use of Ganga
jal (water). It was on the banks of the Ganga that the earliest and most
extensive pockets of urbanisation flourished, because of the river's relatively
steady course. Its northern tributaries, on the other hand, are extremely flood
prone. This, in turn, led to the Ganga being exploited, especially during the
industrial age.
A 1984 study prepared by the Central Pollution Control Board noted three-fourths
of the Biological Oxygen Demand (BOD) of the Ganga was from untreated municipal
sewage and 88 per cent of this came from 27 Class-I cities. It was this study
that formed the basis for GAP, whose first phase was designed to tackle
pollution from 25 of these cities, situated in UP, Bihar and West Bengal (see
box). In statistical terms, this meant treating 870 million litres a day (mld)
of the 1,400 mld sewage generated in these cities. For this, 261 schemes for the
interception, diversion, conveyance and treatment of effluents were set up in
the cities concerned.
Rs 250 crore was set aside in the Seventh Five-Year Plan alone to finance the
project, while the total allocation for the entire scheme was set at Rs 292
crore. The government also decided to set up the Ganga Project Directorate (GPD),
within the Ministry of Environment and Forests (MEF). The outlay for the first
phase of the GAP was subsequently revised to Rs 385 crore, of which Rs 300 crore
have already been spent to complete 191 schemes. GPD officials assert that of
the 70 remaining schemes in the first phase, 47 will be completed this year and
the remaining 23 will be completed next year, when work on the second phase also
is due to begin. It will involve tackling the pollution from class II cities
along the Ganga and its major tributaries.
Complex task
It was obvious from the start that no standard treatment process could be
adopted as the nature of the problem varied from region to region. For instance,
in Hardwar with its relatively small population of about 1.5 lakh, gives rise to
only about 42 mld of sewage per day. But pollution is accentuated sharply every
six years during ardha kumbha when upto 50 lakh devotees descend on the small
town to take a holy did. Industrial effluents from two public sector
establishments -- Indian Drugs and Pharmaceuticals Ltd and Bharat Heavy
Electricals Ltd -- also create serious problems.
Downstream in Kanpur, a highly industrialised and large urban centre, the
situation is more complex. Though treating municipal waste itself calls for a
massive infrastructure, the toxic discharge from engineering, textiles and
especially the leather industries, create additional threats to the river
A formidable challenge lay in the low volume of water in the river during the
eight non-monsoon months. Almost 90 per cent of the dry-weather flow of the
ganga is diverted to the Upper Ganga canal at Hardwar and all the recharge that
takes place after Hardwar is diverted to the Lower Ganga Canal at Aligarh. This
reduction of the dry-weather flow of the main river to a trickle -- the monsoon
flow near Kanpur is said to be 33 times the dry-weather flow --has further
concentrated pollution levels upto Allahabad, where the Yamuna augments the
flow. The Ganga receives more than 60 per cent of its water from its
tributaries.
Thirteen sewer drains are the major source of pollution at Allahabad, and the
venue of the kumbha every 12 years which is said to attract the largest
gathering of people in the world. These sewer drains are choked, says R K
Mehrotra, engineer in charge of the Ganga Project Cell in Allahabad. Besides,
much of Allahabad town has no sewer facilities. Fortunately, there is little
industrial pollution in the city.
The problems at Varanasi, said to be the oldest, continuously inhabited urban
centre in the world, are somewhat similar, but intensified by the effluents from
the diesel locomotive works located in the city. Varanasi is responsible for
one-fourth of UP's contribution of pollutants to the Ganga and its 400-km
sewerage system -- some stretches of which are 300 years old -- has been choked
since about 1920. Because Varanasi is a popular tourist centre, GAP undertook
cosmetic projects such as cleaning and renovating the ghats and the riverfront.
A problem peculiar to Varanasi arises from the Hindu belief that the dead
cremated here attain moksha (freedom from reincarnation), which results in
hundreds of bodies being cremated there every day.
Pollution of the Ganga at Patna, the next major city
downstream, is due largely to its phenomenal growth over the past 20 years,
during which new areas have been built up without adequate civic facilities.
Government officials estimate Patna generates 100 mld of waste water, of which
87 mld from nine major outfalls in the city are being tapped in the first phase
of GAP. Unofficial estimates set waste-water generation much higher. As there is
little scope for the city to grow in width because it is sandwiched between the
Sone river and the Ganga, Patna has expanded mostly along the Ganga, which
vastly increases the garbage that gets dumped into the river.
One advantage that Patna has, however, is high discharge even
during dry weather, because the Ganga is augmented by the Ghagra and the Sone
upstream and the Gandak joins it downstream
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In Calcutta, the second most populous Indian city, GAP
is involved mainly in laying sewers because little of this has been done
in recent years even though the population has increased considerably
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Little sewage flows into the Ganga from the areas
covered by the Calcutta and Howrah municipal corporations and so the main
source of pollution here is waste generated in 33 municipalities, three
municipal corporations and three notified area committees, which form part
of the Calcutta metropolitan area. K K Bagchi, chief executive officer of
the Calcutta Metropolitan Development Authority (CMDA), said only 167
tonnes of the 397 tonnes of the BOD per day is actually directed into the
Ganga. "But laying sewer lines in West Bengal is far more difficult
than anywhere else because the water table here is very high".
GAP details
In the six years of its existence, the Ganga Project Directorate claims
many achievements, including that about 200 schemes have been completed
and only 23 of the 261 projects remain for completion this year. Out of 68
industries identified as "gross pollutants", 10 have been
closed, eight are being prosecuted, 43 have installed treatment plants and
seven are in the process of doing so. According to the latest annual
report of the Union ministry of environment and forests, 12 of 35 sewage
treatment plants and 19 of 28 electric crematoria had been completed by
March this.
GPD director Vinay Shankar stated 370 km of sewer lines have been laid so
far and 485 mld waste water is already being intercepted and diverted,
though only 223 mld is actually being treated. Shankar explained because
poor sanitation greatly pollutes water quality, GAP has placed special
emphasis on low-cost sanitation facilities for the poor and earmarked. Rs
21.45 crore for what be called "one of the largest, lowcost
sanitation programmes ever undertaken in this country". A number of
measures have been implemented near the banks and ghats and dhobis
(launderers) have been provided alternate sites. All 35 riverfront
development schemes, which included renovating 128 ghats, have been
completed.
Commented Virendra Vats, GPD additional director, "We have achieved
most of what we set out to do and the Ganga is much cleaner today than it
was six years ago." GPD officials said water quality of the Ganga has
improved significantly at Rishikesh, Hardwar, Allahabad and Varanasi, but
were reluctant to discuss specifically whether the improvement was line
with set targets. Shankar explained, "The bacteriological water
quality to meet bathing standards haven't been met yet because a large
number of the sewage treatment plants are still not operational."
Echoed R N Trivedi, chief executive officer of Kanpur Nagar Mahapalika,
"Unless all the schemes are complete and all the treatment plants
fully operational, the desired results cannot be achieved."
But criticism of the project and its progress is strident from those
outside the government. Says Raghunath Singh, former MLA and secretary of
the Ganga Mahasamiti, "The Ganga project is hogwash. The Kanpur
stretch is one of the high-profile assignments of GAP, but there is hardly
any improvement in the health of the river there."
S N Upadhyaya, professor of chemical engineering at Benares Hindu
University, was a shade more generous, "Some improvement is certainly
there. But GAP, as designed, cannot bring about a comprehensive
change." And, Calcutta Mayor Prasanta Chatterjee complained though 70
of 110 schemes in West Bengal have been completed, "pollution has not
been checked."
But the most scathing criticism of the project accuses project officials
of not paying attention to the high faecal coliform count in the Ganga, a
vital cause for human illness along its banks. The World Health
Organisation prescribes a maximum coliform count of 500 for bathing water,
but the GPD limit is an astounding 2,500 and, after Hardwar, the count is
several times higher .
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Some allegations have been made that GAP officials have concocted
data. A C Shukla of the botany department of Kanpur University
contends water quality data forwarded by different government
agencies showed considerable variance and this is evidence of their
"unreliability". S K Mishra of the Sankat Mochan
Foundation at Varanasi, who is an associate professor of hydraulic
engineering at Benaras Hindu University, even accused pollution
control board officials of "fudging" data because
monitoring by the foundation's own laboratory -- Swatcha Ganga
Laboratory -- showed much higher pollution levels in the Ganga than
the government's figures. For instance, government figures show the
dissolved oxygen level -- the higher the level, the cleaner the
water -- upstream of Varanasi has risen from 5.6 mg/litre in 1986 to
7.5 mg/litre in May this year, while, the DO level downstream rose
from 5.9 mg/litre in 1986 to 7.2 mg/litre in May.
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Foundation figures based on samples collected
from eight sites in Varanasi show DO levels in May never rose above
6.5 and were as low as 2.5 mg/litre in some places.
K J Nath, director of the Calcutta-based All India Institute of
Public Health and Hygiene which monitors the health of riverside
residents, said it is not possible to quantify GAP's impact on
health. "Water- borne and water-washed diseases are the main
cause for illness in these areas and some of them, like skin and eye
diseases, have shown an upward trend during 1985 and 1989."
Similarly, the incidence of diarrhoea in Varanasi has increased but
other ailments showed a downward trend during the same period. Nath
commented, "We do not have evidences to show that either the
increase or the decrease is due to the GAP."
Long-term prospects
Three major doubts are being expressed about the programme's
prospects of success. The first queries whether state and municipal
officials can maintain and operate Ganga clear-up schemes on their
own and using their own resources. The GPD estimates a minimum of Rs
13 crore will be required annually for this purpose, but unofficial
figures set the total at around Rs 25 crore. And, a senior GPD
official coutioned, the cost of maintenance will shoot up with each
passing year. The second area of doubt is indiscipline among both
people and officials in the use of facilities. Sewage can be pumped
into sewage treatment plants, but in most municipalities, sewage --
much of it solid garbage -- is dumped down manholes even in sewers
still being built. In some cases government officials and operators
of plants and pumps have been caught damaging them deliberately so
they can make some money on repairs. The third area of concern is
rapid urbanisation as the assets being created are linked to the
needs of the urban population, currently living along the river.
But what will happen as these cities grow? Even Bagchi of CMDA
expressed concern about maintenance costs, saying, "When all
the facilities are in place, it will require about Rs 10 crore per
year in West Bengal alone to run them. I am not convinced that the
state government and municipal agencies have this kind of
money." GPD officials concede the response so for from state
governments has been dismal. "We have been able to create all
these facilities only because it is a totally Central sector
programme, but now that the states have to maintain them, they are
developing cold feet," said a senior GPD official, who asked
not to be named.
Dipankar Chakravarty, professor of environmental science Jadavpur
University, put the blame squarely on GAP itself. "Isn't the
GPD aware of the resource crunch? Don't they know that we cannot
afford electrical-mechanical schemes that are so energy intensive? I
think from the very beginning, no one was serious about running
these schemes," he said citing the case of the bheri(fish farm)
at Mudiali, where city sewage is treated by exposing it to sunlight
and lime, which reduces BOD to tolerable levels. The treated sewage
is then used for fish farming, which employs about 250 families.
R K Mehrotra of Allahabad Municipal Corporation says it would be
difficult to operate the treatment plants even if the funds are
available because "in summer most of these cities are subjected
to loadshedding and then the sewage has to be released in the river
untreated. There is no alternative as long as the power crisis
continues." Operators at a municipal sewage treatment plant
near Jajmau, an industrial suburb of Kanpur, admitted they were
discharging untreated water into the Ganga for upto seven each day
because of power cuts. They had a generator but it was powerful
enough only to open riverside gates, but not to operate the Sewage
treatment plant.
There are also pockets which suffer from faulty planning as, for
example, in Kanpur, where the pumping station at Sheesamau has been
lying idle because bad alignment has made it impossible for gravity
sewers to carry water to it. Raghunath Singh Trivedi of the nagar
mahapalika contended untreated water is still into the river because
of a "problem," but an expert committee is reviewing this
problem which is not limited to just one pumping station but to the
entire stretch of the river along the city. Vinay Shankar most of
the untreated sewage is being diverted and discharged into the
river, downstream of the city. But Shankar noted GAP's objective is
only to intercept the waste water that flows into the existing
sewers. But the quality of water in Kanpur and Varanasi indicates
that because a large portion of these cities are unsewered,
effluents simply stream into the river. This is particularly true of
slum colonies and of those agricultural lands on the fringes of
these cities that have been colonised recently and without proper
government approval.
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GAP's critics argue that these problems arose
because the authorities did not pay any attention to planning,
especally to planning underground sewers, because sewage treatment
plans can work only if the sewers remain unclogged. "This is
asking for too much because we all know that this cannot be
done," commented Mishra. "And, if this cannot be achieved,
the whole plan runs aground."
B L Gupta, works manager of UP Jal Nigam in Allahabad, which is
doing most of the sewer laying work, contended people were dumping
garbage into sewer inlets and manholes because municipalities no
longer bother about regular garbage collection. Even dead animals he
added, are found in sewers and in Jajmau, where extensive
sewer-laying is being done in worker colonies, many of the new
sewers can be seen literally choked with garbage.
But this pivotal emphasis on sewers also means it is difficult to
replicate the GAP experience elsewhere because "none of the
Indian cities is fully sewered, leave alone the fact that existing
sewers don't work," says G D Agarwal, former member-secretary
of the Central Pollution Control Board. Agarwal contended the
critical role of pumps in these schemes is a problem because of
frequent breakdowns, which means untreated water is flushed into the
river. So important is the role of pumps, the Ganga projects
founder-director, K C Sivaramakrishnan, described it as a
"pumps- and-pipes scheme."
But M C Mehta, a Supreme Court lawyer who specialises in
environmental cases, commented aunstically that the only
beneficiaries of the pumps-and-pipes scheme are the suppliers and
the officials who award the contracts. "There schemes are like
milch cows. Not only do the officials make money on construction,
there is a lot of money to be made every year on maintenance,"
he said.
Urban solid waste is another problem for the river. A major portion
of this waste emanates from the large number of small industries
located in urban pockets. Chakravarty pointed out that many of the
large units may have set up treatment plants, but they continue to
contribute to Ganga pollution because they subcontract their
"dirty work" to small units. "It is cheaper and it
helps the big unit look clean, but the river gets hurt," he
said.
However, GAP's major shortcoming is the lack of provision in it to
tackle urban growth. Sewage treatment plants, for example, are just
not designed to tackle the extra sewage that will be generated
during the next decade. In Varanasi, for instance, even as Ganga
clean-up work is going on, a World Bank-aided drinking water project
is coming up that will add another 100 mld to the city's sewage. But
there is no provision to deal with this extra load in GAP's Varanasi
segment and so, the water will flow untreated into the river. Cities
along the Ganga are all expanding rapidly but their officials give
little thought to civic infrastructure, which these municipal bodies
would not be able to set up in any case because they are
impoverished. In April, for instance, Kanpur Nagar Mahapalika had to
suspend all work temporarily, for lack of funds.
GAP also suffers because of pressure from groups like land
developers who circumvent the system to protect their vested
interests. A Varanasi land-developer, it is said obstructed the Assi
drain intended to be one of the main carriers of the city's sewage.
All these are some of the fundamental problems facing GAP,
convincing critices like Chakravarty that the whole concept of a
centralised treatment facility is impractical in India. "We
know that sewage farms are working well wherever they have been
started and so we should have settled for similar low cost,
self-sustainable systems. But more than cleaning the river, the
government wanted GAP to be grandiose and spectacular -- and that is
what it has become," said Chakravarty.
Replicating GAP
Can GAP be a model for cleaning up other rivers in the country?
"Of course," responded Vinay Shankar, although be conceded
it would not work if sewers are logged and pumps fail to function or
if the scheme caters only to sewered areas. "Once the sewage
treatment plants are operational, we are sure everything will be all
right," he said. But others say the faecal coliform count was
not likely to drop, because it would not be possible to control it
under GAP.
The Central Ganga Authority, which is chaired by the prime minister,
is to meet shortly to clear GAP's second phase, which seeks to
divert and clean up the main tributaries of the Ganga -- Yamuna,
Hindon, Gomti and Damodar -- in addition to dealing with the
remaining 500 mld waste-water from the Ganga. While there is a
flurry Pariavaran Bhavan over the impending meetings, there are many
like Raghunath Singh and Mehta who want GAP evaluated before more
money is sanctioned. "Once they get the money for the second
phase, the colossal waste in the first phase entailed will be
forgotten," said Mehta.
Agarwal, with somewhat similar views, argued the very idea of
water-based conveyance of sewage for treatment is impractical in
India because of the high costs involved. "It is just
compounding the problem," he said. The sewage, pointed out, is
merely carried a long distance, then treated with high-energy inputs
and, after all this, there is still the solid waste to be disposed.
"Why can't we think of a dry disposal system, instead?" he
asked.
Dry disposal would be more effective, but it would require much more
disciplined consumption of water by the urban rich. Said Agarwal,
"The Ganga will remain dirty as long as wasteful urban
lifestyles continue to be subsidised." But the government seems
to be little inclined to enforce sanitation discipline on the urban
population.
Meanwhile, the Ministry of Environment and Forests has submitted a
National River Action Plan to the Planning Commission for inclusion
in the Eighth Five- Year Plan allocations. The plan seeks to clean
up 22 of India's most polluted rivers. Which raises the question :
can the country afford a project that could well result in
replicating GAP's mistakes?
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source- www.cscindia.com
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