Tim's been meaning to fit an under-sink water filter since we started the trip, and he finally got stuck into it. The logic is simple: we already filter the water going into the tanks, so putting a second filter on the kitchen tap means the drinking water gets filtered twice. Everything else — shower, hand basin, the tap on the A-frame — stays unfiltered, because there's no point running all that water through a filter you're not drinking from. A few things made this install easier than expected: - The filter he chose has a slightly higher flow rate than units like the pure taps, so you're not standing there forever waiting for a pot to fill. - It came with 12mm John Guest fittings — the same standard already on our van — so no converters, no mucking around with different hose sizes. - He found it on Marketplace, still in the box, never used. Someone bought it with good intentions and never got around to fitting it. - Before cutting into anything, he purged all the water lines first, pulled the cabinet doors off for better access, and put a towel and a pot underneath to catch whatever was left in the hoses. Tight workspace, but manageable. https://www.youtube.com/watch?v=mcOqZTsQX_4 Have you fitted a water filter in your van? Under-sink, inline, or something else — what did you go with and would you do it the same way again?