Field notes on water reuse in the Philippines: why reuse projects die on the spreadsheet, what the second pipe really costs, the honest cost per cubic metre, and when reclaimed water is actually worth building.
Clients ask this at almost every site visit. The honest answer is that a sewage treatment plant meeting DAO 2016-08 discharge limits was never designed to produce drinking water, and here is exactly what would have to be added before it could.
