A 10-month leak that has seen water pouring down Stansted’s Grove Hill is not coming from mains pipes, Affinity Water has confirmed. Tests carried out on samples of surface water had come back showing that it did not contain any evidence of chlorine, which is used in drinking water to keep it safe and clean. Affinity said the problem instead lied with blocked gullies and drains, but that it would continue to support Essex Highways in a bid to solve the problem which has plagued residents living on the road. “After conducting thorough on-site investigations and water sampling, the water source …