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Michael Eavis has returned to Worthy Farm after visiting Mozambique to see where proceeds from his festival have been spent.
Villagers often face a journey of a mile or more to get water.
WaterAid, a charity supported by Glastonbury Festival, has spent £150,000 on 75 water pumps.
"£2,000 per borehole is absolutely nothing really," the Glastonbury founder told the BBC's Chief Somerset Correspondent, Clinton Rogers.
Emily Eavis added: "It really does have quite an impact."