For residents like Samsuddin Mia (pictured above), access to a safe and decent toilet is vital in the wake of extreme weather conditions.

Long and heavy rains from June to December are not an uncommon occurrence for residents living in northern parts of Bangladesh.

However, over the last couple of years, cities like Rangpur in the region have experienced rainfall at an unprecedented level during the monsoon season leaving residents with little or no access to proper sanitation facilities.

In September alone, the city witnessed 433mm of rain in a span of 30 hours, submerging nearly a third of the city and leaving 500,000 city dwellers trapped in their homes.

In some areas, there was water logging for nearly fifteen days. The poorest have suffered the most forcing them to move out of their homes and seek refuge with their relatives in nearby areas or in emergency shelters where more than 100 people have access to one toilet.

WSUP is currently working in 10 primary schools for improvements of school sanitation facilities and in their catchment communities in Rangpur. All these communities are situated in the low-lying areas of the city which were under water for three days.

Construction of sanitation facilities on hold as the primary school in Kamarpara is affected by the floods

The aftermath of the floods has left already poor sanitation structures extremely vulnerable, impacting people’s health, dignity and well-being.

Flood water in a resident’s home

Ms Marjina, a resident from Kamarpara – one of the worst affected low-income communities’ said: “the investment for a toilet is too high compared to our financial status. Yet we chose to invest as we know this will bring good health – but reinvesting every year might not be possible for us and many might choose to go back to unimproved options.”

With the unusual rain patterns over the last two years, many residents of this community agree, assuming that this will continue to happen over the coming years.

Another major problem affecting the city is the waste collection systems that are poorly designed, resulting in harmful germs spreading through communities, a phenomenon exacerbated by heavy rains and flooding.

Research recently conducted by ITN-BUET and WSUP found that 45% of toilets in Rangpur have faulty containment systems, many of which were connected to open drains which then mixed with the external environment.

Open drains like the one pictured above are common in Rangpur

The floods in Kamarpara saw sanitation waste from the septic tanks mixing with the floodwater leading to health problems like diarrhoea, dysentery and other skin diseases among the residents.

The picture is not very different in other cities in Bangladesh and it is the poorest who are the worst affected by climate change.

As we mark World Toilet Day this week, we need to act now to ensure that everyone has access to sustainable sanitation that can withstand climate change.

To tackle the impacts of flooding in disadvantaged communities, city authorities need to place more focus on developing climate resilient services for the poorest to ensure communities are healthy and functioning.

Improved toilet construction and ensuring drains are closed rather than open can help. Sanitation also needs to be considered alongside drainage and solid waste management programmes to help reduce the health impacts of poor sanitation in times of heavy rain or flooding.

Even without climate change, access to sanitation in vulnerable urban communities is extremely low in Bangladesh. But with climate change ramping up, and increasing the risk of flooding across the country, living conditions for the poorest may get even worse without concerted action.

Find out more about WSUP's work on climate change

Learn more about our work in Bangladesh