A survey has revealed that more than 64 per cent of construction workers are at risk of dehydration.

The charity Construction Sport's survey found that nearly two-thirds of construction workers do not drink the recommended daily water intake, which poses both physical and mental risks.

Not drinking the recommended daily intake of water can pose both physical and mental riskNot drinking the recommended daily intake of water can pose both physical and mental risk (Image: Supplied)

The poll was conducted over the summer, and 64.2 per cent of respondents said they consumed less than two litres of water daily.

More than a quarter (26 per cent) admitted drinking less than one litre a day, falling short of the European Food Safety Authority's recommended intake of 2.5 litres for men and two litres for women.

In response, Construction Sport has launched a 'Mental Health Hydrated' campaign, supported by the Considerate Constructors Scheme.

This will include site visits, branded water drop-offs, and hydration advice.

Construction Sport has launched 'Mental Health Hydrated' which includes branded water drop-offs and hydration adviceConstruction Sport has launched 'Mental Health Hydrated' which includes branded water drop-offs and hydration advice (Image: Supplied)

Steve Kerslake, founder of Construction Sport, said: "Studies prove that drinking plain water is associated with decreased risk of depression and anxiety, and we have heard of several incidents of workers fainting or collapsing on site due to lack of hydration—putting both themselves and workmates at risk.

"We hope this campaign will remind and encourage those working in construction to make hydration an important part of their daily routine."

A total of 1,000 UK construction workers were surveyed.