In many parts of the world, there is not enough clean water. At the same time, the need for water is increasing. What are the causes of this? What can be done to solve this problem?
Stance: This essay will examine the escalating clean water crisis — visible in stark form in Vietnam's own Mekong Delta — by identifying its main causes and proposing practical solutions.
This answer stays fully correct but presents its three causes and three solutions as a simple list joined mainly with 'Also'/'First'/'Second', gives only one example per solution, and uses plain vocabulary such as 'safe drinking water' rather than precise hydrology terms like 'saltwater intrusion'.
Clean water is becoming harder to find in many parts of the world, while the demand for water keeps growing. This is very clear in Vietnam's Mekong Delta, where some communes now have to bring in drinking water by truck during the dry season. This essay will explain the main causes of this problem and suggest some solutions.
There are several reasons for this water shortage. The first is population growth and fast urbanisation, which means more people and factories use more water every year. Also, dams built upstream on the Mekong River have changed the natural flow of water, and rising sea levels are pushing salt water further into the Delta's rivers during the dry season. This makes water that used to be safe to drink or use for growing rice unusable. In addition, farmers in the region often use old irrigation methods that waste a lot of water, so even more pressure is put on the limited water supply.
To solve this problem, several actions can be taken. First, technology such as reverse-osmosis filters and rainwater collection systems, which are already being installed in some homes and schools in the Delta, can provide safe drinking water even when river water becomes salty. Second, the government can run awareness campaigns and offer financial incentives to encourage people to save water. In my own experience working as an operations supervisor for a restaurant chain in Ho Chi Minh City, changing to water-saving taps and efficient dishwashers reduced our monthly water bills by about ten percent, which shows that saving water can also save money. Finally, the government should build more reservoirs, control the use of groundwater, and work together with neighbouring countries to manage the Mekong River more fairly.
In conclusion, the growing need for clean water, caused by population growth, dams, salt water intrusion and wasteful irrigation, is a serious problem, especially for people living in the Mekong Delta. A mix of new technology, water-saving habits and better government policy will be needed to solve this problem.
Collocations
Examiner Notes
- TR“This essay will explain the main causes of this problem and suggest some solutions.” — A clear outline sentence directly addresses the causes-and-solutions task by telling the reader how the essay is organised.
- CC“Also, dams built upstream on the Mekong River have changed the natural flow of water” — The simple additive linker 'Also' correctly adds a second cause onto the first one mentioned in the paragraph.
- LR“population growth and fast urbanisation” — A basic but accurate pairing of topic-relevant vocabulary, correct though more generic than the more specific hydrology terms used at higher bands.
- GRA“changing to water-saving taps and efficient dishwashers reduced our monthly water bills by about ten percent, which shows that saving water can also save money.” — A non-defining relative clause ('which shows that...') is used correctly to add a general conclusion to the specific personal example.
- TR“A mix of new technology, water-saving habits and better government policy will be needed to solve this problem.” — The conclusion correctly synthesises the three solution strands from the body paragraph into one closing statement.
This answer reaches 7.0 through more precise collocations such as 'rapid urbanisation' and 'saltwater intrusion' and one clearly developed participial clause linking the personal example to a general claim, though the causes and solutions are still presented as a straightforward list rather than the tightly woven cause-effect chains of the 7.5 answer.
A lack of clean, drinkable water is a serious issue in many regions of the world, and the problem is being made worse by constantly rising demand. This is especially visible in Vietnam's Mekong Delta, where entire communes must now truck in drinking water during the dry season. This essay will examine the main causes behind this crisis before suggesting some practical solutions.
A number of connected factors lie behind the current water crisis. Chief among them is population growth combined with rapid urbanisation, which places growing pressure on existing freshwater sources as households and factories consume more. At the same time, dams built upstream on the Mekong River have altered the river's natural flow, while rising sea levels are pushing saltwater further into the Delta's canals during the dry season, making water that was once perfectly drinkable unsafe to use. Furthermore, outdated irrigation methods in the region's rice paddies waste large amounts of freshwater through evaporation and runoff, adding even more strain to an already limited supply.
Tackling this problem calls for a combined approach. Technological solutions such as reverse-osmosis filtration systems and rainwater harvesting units, which are increasingly common in Delta households and schools, offer a reliable way to secure safe drinking water even when river water turns brackish. In addition, promoting water conservation through public campaigns and financial incentives can be highly effective: in my own experience as an operations supervisor for a restaurant chain in Ho Chi Minh City, switching to high-efficiency dishwashers and water-saving taps cut our monthly utility costs by around ten percent, showing that economic incentives can encourage genuinely sustainable behaviour. At a national level, authorities should also invest in freshwater reservoirs, regulate groundwater extraction more strictly, and cooperate with neighbouring countries to manage the Mekong's flow more effectively.
In conclusion, the rising demand for clean water, driven by population growth, upstream damming, saltwater intrusion and inefficient irrigation, presents a serious challenge, one that Mekong Delta communities already face every dry season. A combination of suitable technology, genuine conservation efforts and coordinated regional cooperation will be essential to easing this growing crisis.
Collocations
Examiner Notes
- TR“This essay will examine the main causes behind this crisis before suggesting some practical solutions.” — A clear outline sentence correctly signals the causes-then-solutions structure, closely mirroring the function of the 7.5 answer's outline sentence.
- CC“Furthermore, outdated irrigation methods in the region's rice paddies waste large amounts of freshwater through evaporation and runoff, adding even more strain to an already limited supply.” — The discourse marker 'Furthermore' smoothly adds a third cause onto the two already introduced earlier in the paragraph.
- LR“rising sea levels are pushing saltwater further into the Delta's canals” — Reasonably precise topic-specific phrasing, solid but slightly less compact than the 7.5 answer's tighter collocation 'saltwater intrusion ever deeper into the Delta'.
- GRA“switching to high-efficiency dishwashers and water-saving taps cut our monthly utility costs by around ten percent, showing that economic incentives can encourage genuinely sustainable behaviour.” — A trailing participial clause ('showing that...') correctly links the personal anecdote to a general claim, functioning similarly to the equivalent structure in the 7.5 answer.
- TR“A combination of suitable technology, genuine conservation efforts and coordinated regional cooperation will be essential to easing this growing crisis.” — The conclusion synthesises the three solution strands from the body paragraph into one decisive closing statement.
The 7.5 answer stands out for chaining causes into genuine cause-and-effect relationships within single sentences (dams altering flow leading to saltwater intrusion leading to unusable water), its hydrology-flavoured collocation 'saltwater intrusion ever deeper into the Delta', and a long, grammatically controlled sentence anchored by a trailing participial clause that ties the personal anecdote to a general economic claim.
The scarcity of clean, drinkable water is a pressing global concern, made worse by continuously rising demand. Nowhere is this more visible than in Vietnam's Mekong Delta, where entire communes now truck in drinking water during the dry season. This essay will outline the principal factors behind this crisis and then propose viable solutions.
Several interconnected issues underpin the current water crisis. Foremost among these is population growth combined with rapid urbanisation, which places immense strain on existing freshwater sources, as more households and factories inevitably mean greater consumption. Concurrently, upstream hydropower dams along the Mekong River have altered natural water flow, while rising sea levels drive saltwater intrusion ever deeper into the Delta's rivers and canals during the dry season, rendering water that was once perfectly usable for drinking or rice farming unsafe or unusable. Furthermore, inefficient irrigation practices in the region's rice paddies consume vast quantities of freshwater, much of which is lost to evaporation and runoff rather than reaching crops effectively, adding further pressure on an already strained supply.
Addressing this multifaceted problem requires a comprehensive approach. Technological solutions such as reverse-osmosis filtration units and rainwater harvesting systems, now increasingly installed in Delta households and schools, offer a promising way to secure safe drinking water even when river water turns brackish. Moreover, promoting water conservation through public awareness campaigns and economic incentives is crucial: in my own experience as an operations supervisor for a chain restaurant business in Ho Chi Minh City, simply switching to high-efficiency dishwashers and installing water-saving taps cut our monthly utility costs by roughly ten percent, demonstrating that financial incentives can drive genuinely sustainable behaviour even outside government policy. At the national level, authorities must also invest in freshwater reservoirs upstream of saline-affected zones, enforce stricter regulation of groundwater extraction — a major cause of land subsidence in the Delta — and coordinate with neighbouring countries on managing the Mekong's flow, ensuring that available water reaches communities without unnecessary loss.
In conclusion, the growing demand for clean water, compounded by population growth, upstream damming, saltwater intrusion and wasteful irrigation, presents a formidable challenge, one that communities in the Mekong Delta already confront each dry season. A combination of appropriate technology, rigorous conservation efforts and coordinated regional policy will be essential to mitigating this escalating crisis.
Collocations
Examiner Notes
- TR“This essay will outline the principal factors behind this crisis and then propose viable solutions.” — A clear outline sentence tells the reader exactly how the essay will be structured, meeting the causes-and-solutions task directly.
- CC“Furthermore, inefficient irrigation practices in the region's rice paddies consume vast quantities of freshwater, much of which is lost to evaporation and runoff rather than reaching crops effectively” — The discourse marker 'Furthermore' adds a third cause smoothly onto the two already introduced earlier in the paragraph.
- LR“saltwater intrusion ever deeper into the Delta” — Precise, topic-specific collocation drawn from hydrology and environmental vocabulary.
- GRA“simply switching to high-efficiency dishwashers and installing water-saving taps cut our monthly utility costs by roughly ten percent, demonstrating that financial incentives can drive genuinely sustainable behaviour even outside government policy.” — A long sentence anchored by a trailing participial clause ('demonstrating that...') links a personal anecdote to a general claim with grammatical control.
- TR“A combination of appropriate technology, rigorous conservation efforts and coordinated regional policy will be essential to mitigating this escalating crisis.” — The conclusion synthesises the three solution strands from the body paragraph into one decisive closing statement.