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Groundwater contamination by light non-aqueous phase liquids needs urgent attention

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By Eng. Thushara Dissanayake

When compared with surface water, groundwater was considered a reliable source of drinking water as it was believed to be less polluted. However, the situation has changed drastically and groundwater seems no longer a clean source of drinking water owing to many human activities that lead to its pollution.

Meanwhile, chronic kidney disease (CKD) in Sri Lanka still has an unknown aetiology and, according to reports, it is prevalent in nearly 20 percent of the rural population. Earlier it was suspected that consumption of groundwater polluted with agrochemicals was the cause of the disease as these agricultural areas used excessive amounts of agrochemicals. Accordingly, herbicides containing glyphosate were banned in the country assuming that to be one of the triggering agents for CKD.

Some researchers who are involved in global-level studies say that there can be many causes of CKD. Some of these factors include heat stroke leading to dehydration, a nutritionally deficient diet, mycotoxins from mould exposure, and many other toxic metals. However, we cannot deny the fact that consumption of groundwater contaminated by agrochemicals leads to health issues.

Groundwater contamination

Recently the government banned the importation of chemical fertilisers claiming that they have been the major contributor to groundwater pollution in Sri Lanka. Although agrochemicals are often sighted as the main factor of groundwater pollution there are many other sources too, which remain unnoticed.

Domestic and industrial solid waste is one of the high potential threats to the geo-environment unless properly disposed of. This would include not only food waste but also harmful wastes like plastics, chemicals, and e-waste. Many industries and hospitals contribute considerably to this type of urban waste. Another form of waste is the spreading of slurry, manure, and abattoir waste. When such solid waste is indiscriminately dumped, various hazardous compounds leach into the ground polluting soil and groundwater.

Similarly, hazardous liquid waste also is a major issue though rarely identified. Liquid waste, such as household and industrial sewage, would become a severe source of pollution if not handled properly. Petroleum is another source of groundwater pollution, which is very hard to identify. Generally, these types of contaminants are called light non-aqueous phase liquids (LNAPL).

How LNAPLs contaminate groundwater

Light non-aqueous phase liquids (LNAPL) are hydrophobic organic liquids that are immiscible with water and less dense than water. The most common types are fuels and oils such as petrol, diesel, heating oils, and kerosene. These organic contaminants can leak into the ground from refinery facilities, delivery pipes, bulk storage facilities, and underground storage tanks of fuel stations. When there is a leak of LNAPL the substance travels down to the subsurface due to gravity. LNAPL thus released, migrate down to the water table depending on the quantity released through permeable pathways of soil.

LNAPL can contaminate groundwater in the long term and soluble components partition into the moving groundwater to generate a plume of dissolved contamination. If a sudden release of a large quantity from an underground storage tank occurs it will result in more lateral spreading. Even if the spillage is negligible, its mobilisation in the soil can be extensive. Even this less concentrated flume is toxic and can pose substantial health risks for groundwater users.

Dr. Anil Waduge, a Principal Scientist in the RSK Group, UK, has extensive experience in dealing with the issue and, according to him, many developed countries are already taking remedial action against sites contaminated by LNAPL after a thorough inspection. He further mentioned that there are many LNAPL remediation methods dependent on the contaminant being recovered. Remediation is tricky as contamination may appear in many phases; vapour phase within the vadose zone, substance retained in the soil, and dissolved substance in groundwater and pore water. Pump and treat, multiphase abstraction, bioremediation, chemical oxidation, air sparging, or vacuum extraction are the methods practised in countries like the UK. Even with the currently available technology, it would be not possible to remove all the potentially mobile LNAPL.

Proactive measures

We should focus on proactive measures sooner than later to prevent groundwater contamination from LNAPL as otherwise, the situation would be beyond control in the future. Although land pollution and surface water pollution are noticeable, geo-environmental pollution is not so unless properly inspected.

A terrible case in point is the frequent leakages of petroleum from main transmission pipelines running from the Colombo harbour to Sapugaskanda refinery and then to Kolonnawa storages, among others. Whenever leaks spring from the pipes which are said to be degraded and in need of replacement, people in the area complain that petroleum oil surfaces even from their drinking water wells. However, after such incidents, hardly any environmental rectification is made and the reason for this unfortunate situation is probably the lack of necessary technology.

In addition, we have more than 1,000 filling stations all over the country. These filling stations have underground storage tanks of which there can be invisible leaks. The risk of groundwater contamination will be compounded if vehicle service stations in the country also dispose of their petroleum waste without complying properly with the environmental regulations.

Health impacts

In Sri Lanka, groundwater sources comprise approximately 80 percent of the rural domestic water supply. In addition, groundwater extraction for drinking is high in the highly populated western province and coastal areas of the country. Still, we are unaware of the possible contamination of these groundwater sources from such LNAPL as it is very difficult to assess such impacts. The danger is that if left unattended they can become long-term sources of groundwater and soil contamination.

Research done in other countries has revealed that various chemicals in LNAPL cause cancer, birth defects, or other reproductive issues like spontaneous abortion. Therefore, we have to understand the risk of LNAPL contamination and detect possible contamination sites through proper sampling and chemical analysis. Remedial action should be taken wherever needed to prevent groundwater contamination. Otherwise, those who consume groundwater will experience worse health issues in the future.

(The writer is a chartered Civil Engineer. He wishes to acknowledge the contribution to this article by Dr. Anil Waduge, a Principal Scientist in the RSK Group, UK)



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Peace march and promise of reconciliation

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Peace walk in progress

The ongoing peace march by a group of international Buddhist monks has captured the sentiment of Sri Lankans in a manner that few public events have done in recent times. It is led by the Vietnamese monk Venerable Thich Pannakara who is associated with a mindfulness movement that has roots in Vietnamese Buddhist practice and actively promoted among diaspora communities in the United States. The peace march by the monks, accompanied by their mascot, the dog Aloka, has generated affection and goodwill within the Buddhist and larger community. It follows earlier peace walks in the United States where monks carried a similar message of mindfulness and compassion across communities but without any government or even media patronage as in Sri Lanka.

This initiative has the potential to unfold into an effort to nurture a culture of peace in Sri Lanka. Such a culture is necessary if the country as the country prepares to move beyond its history of conflict towards a more longlasting reconciliation and a political solution to its ethnic and religious divisions. The government’s support for the peace march can be seen as part of a broader attempt to shape such a culture. The Clean Sri Lanka programme, promoted by the government as a civic responsibility campaign focused on environmental cleanliness, ethical conduct and social discipline, provides a useful framework within which such initiatives can be situated. Its emphasis on collective responsibility and shared public space makes it sit well with the values that peacebuilding requires.

government’s previous plan to promote a culture of peace was on the occasion of “Sri Lanka Day” celebrations which were scheduled to take place on December 12-14 last year but was disrupted by Cyclone Ditwah. The Sri Lanka Day celebrations were to include those talented individuals from each and every community at the district level who had excelled in some field or the other, such as science, business or arts and culture and selected by the District Secretariats in each of the 25 districts. They were to gather in Colombo to engage in cultural performances and community-focused exhibitions. The government’s intention was to build up a discourse around the ideas of unity in diversity as a precursor to addressing the more contentious topics of human rights violations during the war period, and issues of accountability and reparations for wrongs suffered during that dark period.

Positive Response

The invitation to the international monks appears to have emerged from within Buddhist religious networks in Sri Lanka that have long maintained links with the larger international Buddhist community. The strong support extended by leading temples and clergy within the country, including the Buddhists Mahanayakes indicates that this was not an isolated effort but one that resonated with the mainstream Buddhist establishment. Indeed, the involvement of senior Buddhist leaders has been particularly noteworthy. A Joint Declaration for Peace in the world, drawing on Sri Lanka’s own experience, and by the Mahanayakes of all Buddhist Chapters took place in the context of the ongoing peace march at the Gangaramaya Temple in Colombo, with participation from the diplomatic community. The declaration, calling for compassion, dialogue and sustainable peace, reflects an effort by religious leadership to assert a moral voice in favour of coexistence.

The popular response to the peace march has also been striking. Large numbers of people have been gathering along the route, offering flowers, water and support to the monks. Schoolchildren have been lining the roads, and communities from different religious backgrounds extend hospitality. On the way, the monks were hosted by both a Hindu temple and a mosque, where food and refreshments were provided. These acts, though simple, carry a message about the possibility of harmony among Sri Lanka’s diverse communities. It helps to counter the perception that the Buddhist community in Sri Lanka is inherently nationalist and resistant to minority concerns that was shaped during the decades of war and reinforced by political mobilisation that too often exploited ethnic identity.

By way of contrast, the peace march offers a different image. It shows a readiness among ordinary people to embrace values of compassion and coexistence that are deeply embedded in Buddhist teaching. The Metta Sutta, one of the most well-known discourses in Buddhism, calls for boundless goodwill towards all beings. It states that one should cultivate a mind that is “boundless towards all beings, free from hatred and ill will.” This emphasis on universal compassion provides a moral foundation for peace that extends beyond national or ethnic boundaries. The monks themselves emphasised this point repeatedly during the walk. Venerable Thich Pannakara reminded those who gathered that while acts of generosity are commendable, mindfulness in everyday life is even more important. He warned that as people become unmindful, they are more prone to react with anger and hatred, thereby contributing to conflict.

More Initiatives

The presence of political leaders at key moments of the march has emphasised the significance that the government attaches to the event. Prime Minister Harini Amarasuriya paid her respects to the peace march monks in Kandy, while President Anura Kumara Dissanayake is expected to do so at the conclusion of the march in Colombo. Such gestures signal an alignment between political authority and moral aspiration, even if the translation of that aspiration into policy remains a work in progress. At the same time, the peace march has not been without its shortcomings. The walk did not engage with the Northern and Eastern parts of the country, regions that were most affected by the war and where the need for reconciliation is most acute. A more inclusive geographic reach would have strengthened the symbolic impact of the initiative.

In addition, the positive impact of the peace march could have been increased if more effort had been taken to coordinate better with other civic and religious groups and include them in the event. Many civil society and religious harmony groups who would have liked to participate in the peace march found themselves unable to do so. There was no place in the programme for them to join. Even government institutions tasked with promoting social cohesion and reconciliation found themselves outside the loop. The Clean Sri Lanka Task Force that organised the peace march may have felt that involving other groups would have made it more complicated to organise the events which have proceeded without problems.

The hope is that the positive energy and goodwill generated by this peace march will not dissipate but will instead inspire further initiatives with the requisite coordination and leadership. The march has generated public discussion, drawn attention to the values of mindfulness and compassion, and created a space in which people can imagine a different future. It has been a special initiative among the many that are needed to build a culture of peace. A culture of peace cannot be imposed from above nor can it emerge overnight. It needs to be nurtured through multiple efforts across society, including education, religious engagement, civic initiatives and political reform. It is within such a culture that the more difficult questions of power sharing, justice and reconciliation can be addressed in a constructive manner.

by Jehan Perera

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Regional Universities

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Development initiatives: Faculty of Technology, University of Jaffna and NCDB

The countryside and peripheral regions have been neglected in the national imagination for many decades. This has also been the case with regional universities which were seen as mere appendages to the university system, and sometimes created to appease political constituencies in the regions. The exclusion of the rural world and the institutions in those regions was not accidental nor inevitable, but the consequence of conscious policies promoted under an extractive and exploitative global order. Neoliberalism globalisation, initiated in the late 1970s with far-reaching policies of free trade and free flow of capital, or the “open economy,” as we call it in Sri Lanka, is now dying. The United States and the Western countries that promoted neoliberalism, as a class project of finance capital to address the falling profits during the long economic downturn in the 1970s, are themselves reversing their policies and are at loggerheads with each other. However, those economic processes will continue to have national consequences into the future.

At the heart of such policies is the neoliberal city, which has become the centre of the economy with expanding financial businesses and a real estate boom. Such financialised cities also had their impact on universities, in lower income countries, where commercialised education with high fees, rising student debt, research for businesses and transnational educational linkages with branch campuses of Western universities, have become a reality.

In the case of Sri Lanka, while neoliberal policies began with the IMF and World Bank Structural Adjustment Programmes, in the late 1970s, the long civil war forestalled the accelerated growth of the neoliberal city. I have argued, over the last decade and a half, that it is with the end of the civil war, in 2009, coinciding with the global financial crisis, that a second wave of neoliberalism in Sri Lanka led to global finance capital being absorbed in infrastructure and real estate in Colombo. The transformation of Colombo into a neoliberal city was overseen by Gotabaya Rajapaksa as Defence Secretary with even the Urban Development Authority brought under the security establishment. While Colombo was drastically changing with a skyline of new buildings and shiny luxury vehicles drawing on massive external debt, there were also moves to promote private higher education institutions. The Board of Investment (BOI) registered many hundred so-called higher education institutions; these were not regulated and many mushroomed like supermarkets and disappeared in no time when they incurred losses.

In contrast to these so-called private higher education institutions that proliferated in and around Colombo, Sri Lanka, drawing on its free education system, has, over the last many decades, also created a number of state universities in peripheral regions. However, these regional universities lack adequate funding and a clear vision and purpose. The current conjuncture with the neoliberal global order unravelling, and the immediate global crisis in energy and transport are grim reminders of the importance of local economies and self-sufficiency. In this column I consider the role of our regional universities and their relationship to the communities within which they are embedded.

Regional context

The necessity and the advantage of robust public services is their reach into peripheral regions and marginalised communities. This is true of public transport, as it is with public hospitals. Private buses will always avoid isolated rural routes as their margins only increase on the busy routes between cities and towns. And private hospitals and clinics flock to the cities to extract from desperate patients, including by unscrupulous doctors who divert patients in public hospitals to be served in the private health facilities they moonlight. Similarly, it is affluent cities and towns that are the attraction for private educational institutions.

Public institutions, including universities, can only ensure their public role if they are adequately funded. Over the last decade and a half, with falling allocations for education, our state universities have been pushed into initiating fee levying courses, both at the post-graduate level and also for undergraduate international students. These programmes are seen as avenues to decrease the dependence of universities on budgetary support. However, the reality is that it is only universities in Colombo that can draw in students capable of paying such high fees. Furthermore, such fee levying courses end up pushing academics into overwork including by offering additional income.

Therefore, allocations for underfunded regional universities need to be steadily increased. Housing facilities and other services for academics working in rural districts would ensure their continued presence and greater engagement with the local communities. Increased time away from teaching and research funding earmarked for community engagement will provide clear direction for academics. Indeed, such funding with a clear vision and role for regional universities can provide considerable social returns. In a time when repeated crises are affecting our society, agricultural production to bolster our food system as well as rural income streams and employment are major issues. Here, regional universities have an important role today in developing social and economic alternatives.

Reimagining development

In recent months, there have been interesting initiatives in the Northern Province, where the Universities of Jaffna and Vavuniya have been engaging state institutions on issues of development. In an initiative to bring different actors together, high level meetings have been convened between the staff of the Agriculture Faculty and officials of the Provincial Agriculture Ministry to figure out solutions for long pending agricultural problems. Similar meetings have also been organised between provincial authorities and the Faculties of Technology and Engineering in Kilinochchi. These initiatives have led to academics engaging communities and co-operatives on their development needs, particularly in formulating new development initiatives and activating idle projects and assets in the region. Such engagement provides opportunities for academics to share their knowledge and skills while learn from communities about challenges that lead to new problems for research.

One of the most rewarding engagements I have been part of is an internship programme for the Technology Faculty of the University of Jaffna, where four batches of final year students, from food technology, green farming and automobile specialities, have been placed for six months within the co-operative movement through the Northern Co-operative Development Bank. This initiative has created a strong relationship between the Technology Faculty and the co-operative movement, with a number of former students now working fulltime in co-operative ventures. They are at the centre of developing solutions for rural co-operatives, including activating idle factories and ensuring quality and standards for their products.

I refer to these concrete initiatives because universities’ role in research and development in Sri Lanka, as in most other countries, are often narrowly conceived to be engagement with private businesses. However, for rural regions, the challenge, even with technological development, is the generation of appropriate technologies that can serve communities.

In Sri Lanka, we have for long emulated the major Western universities and in the process lost sight of the needs of our own youth and communities. Rethinking the development of our universities may have to begin with an understanding of the real challenges and context of our people. Our universities and their academics, if provided with a progressive vision and adequate resources and time to engage their communities, have the potential to address the many economic and social challenges that the next decade of global turmoil is bound to create.

Ahilan Kadirgamar is a political economist and Senior Lecturer, University of Jaffna.

(Kuppi is a politics and pedagogy happening on the margins of the lecture hall that parodies, subverts, and simultaneously reaffirms social hierarchies)

by Ahilan Kadirgamar

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‘Disco Lady’ hitmaker now doing it for Climate Change

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The name Alston Koch is generally associated with the hit song ‘Disco Lady.’ Yes, he has had several other top-notch songs to his credit but how many music lovers are aware that Alston is one of the few Asian-born entertainers using music for climate advocacy, since 2008.

He is back in the ‘climate change’ scene, with SUNx Malta, to celebrate Earth Day 2026, with the release of ‘A Symphony for Change’ – a vibrant Dodo4Kids video by Alston.

The inspiring musical video highlights ocean conservation and empowers children as future climate champions, honouring Maurice Strong’s legacy through education, creativity, and global collaboration for a sustainable planet.

The four-minute animated musical, composed and performed by platinum award-winning artiste Alston Koch, brings to life a resurrected Dodo, guiding children on a mission to clean up marine environments.

With a catchy melody and an uplifting message, the video blends entertainment with education—making climate awareness accessible and engaging for the next generation.

SUNx Malta is a Climate Friendly Travel system, focused on transforming the global tourism sector that is low-carbon, SDG-linked, and nature-positive.

Professor Geoffrey Lipman, President of SUNx Malta, described the project as a joyful collaboration with purpose:

“It’s always a pleasure to produce music with Alston for the good of our planet. And this time, to incorporate our Dodo4Kids in the video urging the next generation of young climate champions to help save our seas.”

For Alston, now based in Australia, the collaboration continues a long-standing journey of climate-focused creativity:

Says Alston: “I have been working on climate songs since the first release, in 2009, of the video ‘Act Now.’ Since then, I’ve performed at major global events—from Bali to Glasgow. I wrote this song because the climate horizon is darkening, and our kids and grandkids are our best hope for a brighter future.”

Alston’s very first climate song is ‘Can We Take This Climate Change,’ released in 2008.

It was written by Alston for the World Trade Organisation presentation, in London, and presented at ‘Live the Deal Climate Change’ conference in Copenhagen.

The Sri Lankan-born singer was goodwill ambassador for the campaign, and the then UK Minister Barbara Follett called it a “gift in song to the world suffering due to climate change.”

Alston said he wrote it after noticing butterflies, birds, and fruit trees disappearing from his childhood days.

In 2017, his creation ‘Make a Change’ was released in connection with World Tourism Day 2017.

Alston Koch’s work on climate advocacy is pretty inspiring, especially as climate change is now creating horrifying problems worldwide, and in Sri Lanka, too.

Alston also indicated to us that he has plans to visit Sri Lanka, sometime this year, and, maybe, even plan out a date for an Alston Koch special … a concert, no doubt.

Can’t wait for it!

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