Air and water-borne mercury emissions have contaminated large areas of Kodaikanal and surrounding areas. A study conducted by the Department of Atomic Energy confirmed that the Kodaikanal Lake has been contaminated by mercury emissions. The causes were reported to be dispersal of elemental mercury to the atmosphere from improper storage and dispersal to water from surface effluents from the factory.
Moss samples collected from trees surrounding the Berijam Lake, located 20 km from the factory, were also tested. Mercury levels were in the range of 0.2 µg/kg, while in Kodaikanal Lake the lichen and moss levels were 7.9 µg/kg and 8.3 µg/kg, respectively. Fish samples from Kodaikanal Lake also showed mercury levels in the range of 120 to 290 mg/kg.
An environmental audit commissioned by the company admitted that the estimated offsite discharge to the Pambar shola forests is approximately 300 kgs. Additionally, 70 kgs were released through airborne emissions. Just one gram of mercury deposited annually in a lake can, in the long term, contaminate a lake spread over 25 acres to the extent that fish from the lake are rendered unfit for human consumption. Plant workers and Greenpeace India maintain that the company’s figures of mercury discharges to the environment are grossly underestimated.
HUL has been accused of considerable legal manoeuvring to avoid paying compensation to the ex-workers and their families, many of whom died or have become physically impaired. Responding to claims that mercury exposure in the workplace may have damaged workers’ health, the company conducted a medical check-up in March 2001. It concluded that no workers in the factory suffer from any illness which could be attributed to mercury exposure.
However, a preliminary health survey conducted by two occupational and community health specialists from Bangalore-based Community Health Cell on 30 workers and ex-workers found many people had gum and skin allergy related problems which appeared to be due to exposure to mercury.
More than 1,100 workers worked in the factory during its life-time. From their testimonies, workers appeared to know nothing about the dangers of working with mercury. There was no safety equipment for the workers and neither were there proper facilities to bathe clean after working in the factory. They were not provided with face masks to reduce their intake of mercury in the air and changed uniforms only once every three to four days. Contract workers were said to have worked with their bare hands to clean up the mercury. The workers also supposedly took home on them particles of mercury that affected the members of their family, including their children.
Workers began to suffer headaches, skin rashes and spinal problems. With no knowledge about mercury, they failed to link their illnesses to it and absenteeism and attrition increased over time.
Once released into the environment, Mercury can cause severe damage to kidney, liver and other vital organs. Exposure on a regular basis can cause skin diseases and damage the eyes. Mercury also affects the nervous system and organic compounds of mercury can cause reproductive disorders and birth defects.
Some 18 ex-workers are reported to have died due to illnesses that can be traced to exposure to mercury. Nine children of former workers have died. Many more workers and their children continue to suffer the effects of mercury poisoning. Miscarriages and children born with congenital ailments and severe mental and physical disorders continue to be reported among the workers and their families.
The fish in Kodaikanal Lake are contaminated, which has caused the loss of livelihood for many people. Water as far as Madurai, a major city about 130kms from Kodaikanal, has been contaminated. That’s no surprise because the contaminated water from the mountains was bound to flow onto the plains below.
Levels of mercury in the soil outside the factory indicate an elevation of 25 times over the lowest reading, and 250 times over permissible limits. A Department of Atomic Energy study found mercury levels at 1.32 microgram per cubic metre against the normal level of 0.5-10 nanogram per cubic metre; effectively an aberration of between 132 to 2,640 times.
While the company has taken limited steps to clean up its former site, the wider environment of course remains contaminated.
In June 2007, the Madras High Court constituted an ‘expert committee’ to decide on the mercury workers’ health claims, which failed to find sufficient evidence to link the current clinical condition of the workers to past mercury exposure in the factory. However, the saga still drags on today.