Danessa Rivera – The Philippine Star October 3, 2022 | 12:00am MANILA, Philippines — The Metropolitan Waterworks and Sewerage System (MWSS) plans to build a new tunnel from Ipo Dam to Bigte, in Norzagaray, Bulacan worth over P3 billion to improve Metro Manila’s water security. In a filing with the Department of Environment and Natural Resources-Environmental Management Bureau (DENR-EMB), the MWSS is pursuing the construction of tunnel 5 under the Angat Water Transmission Improvement Project (AWTIP). The MWSS said a new tunnel is urgently needed to continuously mitigate the risk of a partial or…