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| Sewer cleaning: Why is lack of safety costing lives? | | | Dr. Vijay Garg
Sewer cleaning is one of the most essential yet least visible forms of public service. Every day, sanitation workers enter environments that most people never see and perform work that is necessary for cities, towns and villages to function safely. Yet when adequate safety measures are missing, this essential work can become life-threatening.
The question is not simply why accidents happen. The deeper question is why workers continue to face serious risks while performing work that society depends upon.
A Dangerous Working Environment
Sewers and manholes can contain toxic gases, contaminated water, sharp objects and other hazards. Some gases may reduce the oxygen available for breathing or cause poisoning. A worker entering such an environment without proper assessment, ventilation, protective equipment and supervision may face severe danger within a very short period.
The risks are often invisible. A manhole may look like an ordinary opening in the road, but conditions below the surface can be completely different. The concentration of gases can change, oxygen levels can fall and wastewater can suddenly rise.
Therefore, sewer cleaning cannot be treated as ordinary manual labour. It requires trained personnel, appropriate technology, risk assessment and emergency preparedness.
When Safety Becomes Secondary
Fatal incidents can occur when safety procedures are ignored, equipment is unavailable or workers are pressured to complete a task quickly. In some situations, workers may enter confined spaces without adequate gas detection, respiratory protection, communication systems or rescue arrangements.
Another serious problem is the absence of proper supervision. Entering a confined space should never be treated as an individual decision without a safety plan. Before work begins, hazards need to be identified, the atmosphere tested and appropriate precautions established.
Most importantly, a rescue plan must exist before anyone enters. A common danger in confined-space accidents is that a second person may enter impulsively to rescue a colleague and become another victim. Rescue should be conducted using trained personnel and suitable equipment.
Technology Can Reduce Human Exposure
One of the most important ways to improve safety is to reduce the need for human beings to enter sewers at all.
Modern sanitation systems can increasingly use mechanical cleaning machines, suction equipment, robotic devices, cameras and other technologies for inspection and cleaning. These tools cannot eliminate every risk, but they can reduce direct human exposure to hazardous environments.
Technology should not be viewed as a threat to sanitation workers. Rather, it should be viewed as a way to transform their jobs from dangerous manual work into safer, skilled technical occupations.
A worker operating a machine, monitoring a robotic inspection system or managing a mechanised cleaning operation can perform an important sanitation role without unnecessarily entering a dangerous confined space.
Training Is Not Optional
Equipment alone cannot guarantee safety. Workers need regular and practical training.
Training should cover confined-space hazards, gas detection, personal protective equipment, communication procedures, emergency response, first aid and safe use of machinery. Supervisors also need specialised training because they are responsible for ensuring that safety procedures are followed.
Training should not be limited to a single orientation session. Skills must be refreshed periodically, especially when equipment, working conditions or procedures change.
Protective Equipment Must Be Practical
Personal protective equipment is important, but it must be appropriate for the actual hazard.
Depending on the work involved, workers may require protective clothing, gloves, boots, helmets, eye and face protection, gas-monitoring devices, harnesses and appropriate respiratory protection. However, simply providing equipment is not enough.
Workers must know how to use it correctly, equipment must be properly maintained and damaged or expired items must be replaced. Safety equipment that is unavailable, unsuitable or difficult to use cannot provide meaningful protection.
The Importance of Gas Detection
One of the most critical precautions in confined-space work is atmospheric testing.
Before entry, the atmosphere should be assessed for oxygen deficiency and hazardous gases. Conditions should also be monitored during the work because the atmosphere can change.
A worker should never have to guess whether the air inside a sewer is safe to breathe.
Portable gas detectors and other monitoring systems can provide essential information and help prevent workers from entering dangerous conditions. But these devices must be properly maintained, calibrated and used by trained personnel.
Emergency Rescue Must Be Planned in Advance
Safety does not end when an accident occurs. The ability to respond quickly can determine whether an incident becomes fatal.
Every high-risk sewer operation should have a clear emergency procedure. Rescue equipment, trained personnel, communication systems and access to medical assistance should be arranged before work begins.
The principle should be simple: No entry without a rescue plan.
Emergency preparedness also requires regular drills. Workers and supervisors should know what to do, whom to contact and how to respond without creating additional casualties.
Responsibility Is Shared
Protecting sanitation workers is not the responsibility of workers alone.
Municipal authorities, contractors, employers, engineers, supervisors and government agencies all have responsibilities. Authorities must establish and enforce safety standards. Employers must provide suitable equipment and training. Supervisors must ensure that procedures are followed. Workers must be trained and empowered to refuse unsafe work without fear of losing employment.
Contracting arrangements should not allow responsibility for safety to become unclear. When work is outsourced, the duty to protect workers does not disappear.
Dignity Must Be Part of Safety
Sanitation workers perform work that protects public health. Their contribution deserves dignity, respect and fair working conditions.
Society often notices sanitation workers only when something goes wrong. Yet clean roads, functioning drainage systems and healthy communities depend partly on their daily labour.
A worker should never have to choose between earning a livelihood and protecting their life.
Safety is therefore not a luxury or an additional benefit. It is a basic requirement of decent employment.
The Role of Citizens
Citizens also have a role to play. Waste should not be thrown into drains because plastic, chemicals, construction debris and other materials can block sewer systems and increase risks for workers.
Communities should understand that a blocked drain is not merely an inconvenience. Someone eventually has to deal with the blockage.
Responsible waste disposal, proper maintenance of drainage systems and public awareness can reduce the hazards faced by sanitation workers.
From Manual Entry to Safer Sanitation
The long-term goal should be to move toward sanitation systems in which hazardous manual entry is avoided wherever technology and engineering solutions can perform the task.
This does not mean eliminating sanitation workers. It means upgrading sanitation work.
Workers can be trained as machine operators, equipment technicians, safety assistants, inspectors and sanitation supervisors. Such a transition can create safer employment while improving the efficiency and dignity of the sanitation sector.
A Moral Test for Society
The true measure of a city’s development is not only its roads, buildings, technology or economic growth. It is also how safely the people who maintain that city are able to work.
When a sanitation worker enters a sewer, the responsibility does not end at the manhole. It extends to the employer, the authorities, the technology providers and society as a whole.
Every preventable death should lead to serious examination of what went wrong and what can be changed.
The solution lies in a combination of mechanisation, training, protective equipment, atmospheric monitoring, strong supervision, emergency preparedness, effective enforcement and social respect.
Sewer cleaning is necessary work. It should never have to become a death sentence.
A clean city should not be built on unsafe labour. Those who protect public health by keeping our surroundings clean deserve the same protection that society expects them to provide to others. |
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