Swimming is given a lot of importance at GDGWS. There are provisions made for all age groups. This Sport is indeed a very popular sporting activity. There is a separate pool for the juniors, some of who take their first dip at GDGWS. The school also boasts of a half-Olympic sized indoor swimming pool for the senior swimmers. The water is chlorine free and treated with ozone technology. The expert coaches are recruited keeping in mind they will be required to tackle beginners, regular swimmers as well as train students to take part in various competitions. GDGWS students have won many laurels in Swimming Championships at the inter-school as well as national levels.