After years of designing and operating treatment plants around Cebu, I've learned that how dirty wastewater looks tells you almost nothing about how hard it will be to treat. Here's what actually makes a stream difficult, from someone who learned it the hard way.
Cebu City's July 30-31 flooding submerged 16 barangays - and dozens of sewage treatment plants nobody is talking about. A field guide to what floodwater does to an STP, what to check before switching everything back on, and the design lessons every flood keeps teaching us.
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.
