Treat at the tap or treat the tank? We compare point-of-use and bulk filtration for the realities of a field hospital.
A field hospital faces a deceptively simple water question: treat at the tap, or treat the tank? Point-of-use filtration and bulk treatment each solve a different problem, and the right answer is almost always both, sized correctly.
Bulk treatment cleans water for the whole facility efficiently per liter, but it is a single point of failure — when the unit goes down, the hospital goes dry. Point-of-use puts purification at the bed or the tap, resilient and distributable, but consumable-hungry and dependent on user compliance. Clinical loads (surgery, rehydration) multiply the demand beyond simple drinking water. For the full specification, see our guide to medical water filtration.
The economics decide the mix. Membranes foul, cartridges expire, UV lamps age out — every one a resupply line that has to reach the field on schedule. Total cost over the deployment, not sticker price, is the number that matters, and it favors redundancy.
International Health Journal sizes the point-of-use and bulk split to population, clinical demand, and the maintenance capacity actually present on site.