(Fortune Magazine) -- At dawn, under the belly of a wrought-iron bridge, 12-year-old Somnath Dantoso drops a dumbbell-shaped magnet from his makeshift raft into New Delhi's Yamuna River. It is a routine he has followed daily for four years. The magnet sinks 30 feet below the river's inky surface and on a good day brings up about 50 rupees' ($1.22) worth of coins that commuters toss in for good luck. "When people stop throwing coins, I'm going to open a grocery shop," he says. "Otherwise I'll do this the rest of my life."
The coins are the least of the Yamuna's problems: The stretch of river where Somnath works is so contaminated that it can hardly sustain marine life. Garbage cascades down its banks, giving off a fetid stench. And half of the city's raw sewage flows into its waters. "The river is dead," says Sunita Narain, director of the Centre for Science and Environment, a watchdog group in New Delhi. "It just has not been officially cremated."
The blighting of the Yamuna is a symptom of India's unchecked urban growth and poor oversight. The government has spent nearly $500 million trying to clean up the river, most of it going to waste-treatment stations, yet pollution levels more than doubled from 1993 to 2005. And they continue to rise.
The problem is that 11 of the city's 17 sewage-treatment plants are underutilized; a quarter of them run at less than 30 percent capacity. That's because the city's sewer system is so corroded and clogged it can't deliver to the treatment plants the waste of the 55 percent of New Delhi's 15 million inhabitants who are connected to the sewage system.
And even if the plants were fully utilized, there would still be the waste from 1,500 unplanned neighborhoods, where sewage "finds its way into the drains and the river," says Arun Mathur, head of the Delhi Jal Board, the government agency responsible for the city's water supply.
The Centre for Science and Environment says that nearly 80 percent of the river's pollution is the result of raw sewage. Combined with industrial runoff, that comes to more than three billion liters of waste per day, a quantity well beyond the river's assimilative capacity. The frothy mix is so glaring it can be viewed on Google Earth.
The Yamuna, which flows 855 miles from the Himalayas into the Ganges, isn't India's only polluted river. Eighty percent of the country's urban waste goes directly into rivers, many of which are so polluted they exceed permissible levels for safe bathing.
The costs to the economy are enormous. Waterborne diseases are India's leading cause of childhood mortality. Shreekant Gupta, a professor at the Delhi School of Economics who specializes in the environment, estimates that lost productivity from death and disease resulting from river pollution and other environmental damage is equivalent to about 4 percent of gross domestic product. "Some of this feeling of euphoria," he says of India's 9 percent growth rate, "gets a bit dampened thinking of environmental degradation."
Sheila Dikshit, New Delhi's chief minister, says the government simply followed the recommendations of outside consultants who encouraged the building of expensive sewage-treatment plants but didn't anticipate the surge in migration of rural poor to New Delhi. "We're tired and frustrated from spending money," she says.
But not everything can be blamed on consultants. An obfuscating web of political appointees, civil servants and weak elected officials has made accountability almost impossible. At least eight city, state and federal agencies oversee various aspects of the Yamuna's cleanup, alternately competing for funds and sometimes passing the buck when public anger reaches a boiling point.
The problem isn't insurmountable, says Gupta, the economics professor. He argues that a clean river is a public good for which people should have to pay. But New Delhi's citizens aren't charged sufficiently for the millions of gallons of waste they flush daily. "Our municipal finances are in a mess," he says, "because we essentially don't raise money from property taxes and user charges, the two sustainable sources of revenue."
Most New Delhi politicians don't want to risk levying new taxes and upsetting voters who already face regular brownouts and water shortages. Some politicians also look favorably on lucrative infrastructure appropriations, which can result in backing from businessmen who receive the contracts.
The fate of the Yamuna is now in the hands of India's Supreme Court, which took up the issue on its own in 1994 after press reports highlighting the river's dismal condition. In early May the Court approved a proposal from the Delhi Jal Board to build interceptor sewers that would channel the waste flowing from unconnected parts of the city to the sewage-treatment plants.
The pricetag for the new construction: another $500 million. Mathur, the board's CEO, predicts that by 2010 - just in time for New Delhi to host the Commonwealth Games set to take place along the banks of the river - the Yamuna will experience a 90 percent improvement in water quality.
But Narain, the director of the Science and Environment Centre, says that throwing more money into a sewage-diversion infrastructure project would be a waste. She has called for rethinking the city's pollution-control paradigm and building small-scale waste-treatment plants on a neighborhood basis, reusing the water locally, and charging higher rates for excessive wastewater.
India's Prime Minister, Manmohan Singh, has also come down on the side of innovation. In a speech delivered on World Water Day in March, he called on India's scientists, technologists and engineers to redesign the flush toilet.
Highlight 1999
TREND IN POLLUTION LOAD CONTRIBUTION TO RIVER YAMUNA IN DELHI STRETCH
The trend in pollution load contribution between 1982 to 1998 in terms of BOD load in Delhi stretch shows a continuous increase in BOD load contributed to the river from 117.3 tonnes/day in 1982 to 211.0 tonnes/day in 1998. There is significant increase in annual average contribution during year 1983, 1986 and 1996 in comparison to its preceding year may be due to contribution of high BOD loads along with run-off water. The BOD load in Delhi stretch is calculated considering the data of seven major drains i.e. Burari Drain, Najafgarh Drain, Civil Mill Drain, Power House Drain, Sen Nursing Home Drain, Barapulla Drain and Shahdara Drain only. The data for flow measurement in drains for the year 1992-94 are not available, since the monitoring was discontinued during the period.
No definite trend in water quality has been observed, although pollution load has gradually increased possibly due to following reasons:
1.There is no fresh water flow in many stretches of the river during dry weather, only waste water flows in such stretches. The waste water with almost constant quality over a period of time will not show any trend in the river water quality in such stretches.
2.The abstractive uses of surface and ground water in the catchment area of the river are need based. There is drastic reduction in the water use, if there is rainfall in the command area of the canal used for irrigation, resulting in less abstraction of water and more flow in the river leading to more dilution of pollution and better quality. The rainfall in non-monsoon period are highly unpredictable and irregular, therefore such water quality changes are also irregular. The monitoring has been undertaken on regular basis and such irregular changes are encountered many times leading to irregular water quality trend.
Waste water disposal in River Yamuna from NCT-Delhi
A total of 2083 MLD wastewater is generated within sewered areas of Delhi. Even in the sewered areas, all sources of wastewater (including households are not connected to the sewerage system). As a result, a significant volume of wastewater generated, remains untrapped and find its way into the open drains.
The five sewerage zones of Delhi are catered by five major sewage treatment plants and two Oxidation Ponds having total capacity of about 1473 MLD (as on June, 1999). While, each of these zones have one major STP each, Okhla & Rithala zones are served by an Oxidation Pond each namely Vasantkunj and Timarpur respectively, but they are also considered as STPs for discussion. The total treatment capacity of treatment plants are inadequate and hence the significant amount of waste water having high BOD Load is bound to flow untrapped.
The total amount of BOD, which is released by direct house-connections or through the open drains does not reach to the STPs in the same quantity, but gets exerted due to decomposition of organic matter during course of travel. The extent of exertion can be indicated by the BOD concentration in the sewage at the inlet of each STP. The treatment of STPs provided for the reduction of BOD load upto an extend of 90% depending on the number of stages of treatment but such efficiency are practically difficult to maintain.
The treated effluent from STPs other than what is withdrawn for irrigation purposes, joins nearby water bodies. The discharge from Okhla STP goes to Agra canal and from Vasant Kunj Oxidation Pond to Kushak - Barapulla drain. The effluent from Shahdara STP finds it way into the Shahdara drain, whereas all other STPs and Timarpur Oxidation Pond finally discharge into the Najafgarh drain either directly or through various sub drains. The wastewater not trapped for treatment in STPs find its way into various drains and sub-drains from their respective catchment areas and discharged into the river Yamuna. A small fraction of sewage is also discharged into Agra Canal through Kalkaji and Tughlaqabad drains.
Waste water disposal in River Yamuna from NCT-Delhi
A total of 2083 MLD wastewater is generated within sewered areas of Delhi. Even in the sewered areas, all sources of wastewater (including households are not connected to the sewerage system). As a result, a significant volume of wastewater generated, remains untrapped and find its way into the open drains.
The five sewerage zones of Delhi are catered by five major sewage treatment plants and two Oxidation Ponds having total capacity of about 1473 MLD (as on June, 1999). While, each of these zones have one major STP each, Okhla & Rithala zones are served by an Oxidation Pond each namely Vasantkunj and Timarpur respectively, but they are also considered as STPs for discussion. The total treatment capacity of treatment plants are inadequate and hence the significant amount of waste water having high BOD Load is bound to flow untrapped.
The total amount of BOD, which is released by direct house-connections or through the open drains does not reach to the STPs in the same quantity, but gets exerted due to decomposition of organic matter during course of travel. The extent of exertion can be indicated by the BOD concentration in the sewage at the inlet of each STP. The treatment of STPs provided for the reduction of BOD load upto an extend of 90% depending on the number of stages of treatment but such efficiency are practically difficult to maintain.
The treated effluent from STPs other than what is withdrawn for irrigation purposes, joins nearby water bodies. The discharge from Okhla STP goes to Agra canal and from Vasant Kunj Oxidation Pond to Kushak - Barapulla drain. The effluent from Shahdara STP finds it way into the Shahdara drain, whereas all other STPs and Timarpur Oxidation Pond finally discharge into the Najafgarh drain either directly or through various sub drains. The wastewater not trapped for treatment in STPs find its way into various drains and sub-drains from their respective catchment areas and discharged into the river Yamuna. A small fraction of sewage is also discharged into Agra Canal through Kalkaji and Tughlaqabad drains.
Estimated wastewater discharge received by drains in Delhi (as on March, 1999)
Drain/Canal | From STPs | Untrapped | Total |
| STP | Flow (MLD) | BOD (MT/d) | Flow (MLD) | BOD (MT/d) | Flow (MLD) | BOD (MT/d) |
Najafgarh * | Keshopur Rithala C.Pillar Timarpur | 272 100 35 11 | 29.62 5.18 2.70 0.11 | 950 | 53.24 | 1368 | 90.85 |
Subtotal | 418 | 37.61 | | | | |
Burari | - | - | - | 239 | 6.06 | 239 | 6.06 |
Shahdara** | Shahdara | 46 | 2.36 | 390 | 38.59 | 436 | 40.95 |
Others -Burari -Civil Mill -Power House -Sen Nursing Home | | | | 217 | 39.82 | 217 | 39.82 |
| Vasant Kunj | 9 | 0.10 | 219 | 14.96 | 228 | 15.06 |
Agra Canal*** | Okhla | 474 | 54.75 | | | 474 | 54.75 |
Total | 947 | 94.82 | 1776 | 152.67 | 2723 | 247.49 |
* Najafgarh drain also receives water from Western Yamuna Canal (WJC).
** Shahdara drain also receives waste water from Ghaziabad and Noida.
*** Agra Canal also receives untrapped sewage through Kalkaji and Tughlaqabad drains.
Najafgarh drain receives maximum wastewater discharge followed by Agra Canal and Shahdara drain.
Role of NGOs in Environmental Management
Enactment of statutes on Pollution Control and the experience gained in implementation of the various provisions of these Acts in the past more than two decades had indicated that Govt. machinery alone cannot effectively cope-up with the task of pollution control until supported by the masses. The need for participation of masses in achieving the targets committed in the Policy Statements for Abatement of Pollution has been felt strongly. Public interest litigations have successfully demonstrated that responsible and concerned NGOs and public spirited individuals can bring about significant pressure on polluting industries for adopting pollution control measures.
NGO being one of the most effective media to reach the people these days, may play a significant role in this regards. NGOs are assisting the State Pollution Control Boards to a greater extent in providing first hand information and generating mass awareness with regard to control of pollution and can better function in this field in the following ways :
- By conducting preliminary river surveys and survey in air pollution control area for identification of any pollution source.
- By keeping vigil on abstraction of water/discharge of sewage trade effluent by any industry in quantity in relation to flow/volume.
- By conducting sampling and analysis of river/well water to ascertain the quality of river/well water.
- By providing information regarding any cause or permit any poisonous, noxious or polluting matter into any stream or well or on land or in air.
- By keeping vigil in the surrounding area, river, well, land and air against pollution and reporting to State Board/Central Board, if found any.
- By providing information whether any river stretch requires prohibition on use for disposal of polluting matters – for notification under Section 24 of the Water Act.
- By providing information regarding violation of consent such as discharges in odd hours etc.
- By publishing the minimum height of the stack/chimney prescribed for the industry/industrial operation etc. and ambient air and ambient water standards.
- By publishing the notified restricted areas where industries, industrial operations etc. shall not be carried out or shall be carried out subject to certain safe-guards.
- By providing information on fish kill or other sudden damage to the environment not noticed by the State Board.
As far as, Central Board is concerned, it has been extending its full co-operation by providing financial assistance for conducting mass awareness programme in their area. The water testing kit developed by CPCB is being provided to NGOs on subsidised rates making their task easy. Simultaneously the technical publications are also being provided on subsidised rates to NGOs by CPCB.
In addition to the above, CPCB has been conducting Inter-action meets and Training Programmes through selected Institutions and capable NGOs to other NGOs specially for those working at grass-root level in villages, town and cities.
In all, we appreciate the aptitude and efforts of NGOs who have played magnificent role in this field of environment protection. We expect many more NGOs will come forward to take-up the issues regarding environmental management and promote sustainable development.