2.1. Challenges in Drinking Water

In Bangladesh, people are battling with drinking water risk. The reason is that they cannot drink arsenic-contaminated groundwater, and they have a problem with water salinity in surface water. This leads to waterborne health diseases like dysentery, diarrhoea, and cholera.

In Bangladesh, there are significant challenges related to drinking water. Two major issues are arsenic contamination in groundwater and the salinity of surface water. Arsenic is a toxic element that can cause serious health problems, making the groundwater unsafe to drink. On the other hand, the surface water in coastal regions is often salty and likewise unsuitable for consumption. These issues contribute to the spread of serious health diseases, including dysentery and cholera, which are primarily caused by contaminated drinking water.

Think of Bangladesh's drinking water situation like a situation where someone in a town has lots of fruit trees, but all the fruit they grow is poisonous. No matter how much fruit they have, it cannot be eaten safely. Similarly, in Bangladesh, although there is plenty of water available, much of it is unsafe to drink due to contamination and salinity.

One possible solution to these challenges is the collection of rainwater. This can be done at the domestic level, where families can collect rainwater from their rooftops and store it in tanks. A 5000-liter tank can provide enough drinking water for a family of five for six months during the dry season.

A practical solution to the drinking water challenges in Bangladesh is rainwater harvesting. This method involves collecting rain that falls on rooftops and storing it in tanks for later use. Such tanks can hold a significant amount of water, enough to last a family through the dry season. By promoting the installation of these tanks, communities can ensure access to safe drinking water while avoiding the pitfalls of contaminated groundwater and saline surface water.

Imagine living in a region where there's plenty of rainfall, but all regular water sources are unsafe. By setting up a simple system to catch rainwater from rooftops, families can fill large containers and have clean water for months. It's like being able to save money in a bank instead of spending it all—even if you can’t drink from the tap safely, you save when it rains.

Promoting the use of rainwater tanks is essential. Not only a few households, but millions need to adopt this practice for significant impact.

To solve the drinking water issue comprehensively, it's crucial that not just a few families, but millions participate in rainwater harvesting. The more families adopt this practice, the larger the collective impact on improving access to clean drinking water. As a planner or disaster manager, encouraging widespread adoption of this technology is an important challenge.

Consider a community garden: if only a few people grow fruits and vegetables, the benefits are limited to those households. However, if the whole neighborhood participates, there’ll be more food for everyone. Similarly, if many families install rainwater tanks, the entire community can benefit from a shared source of safe drinking water.

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