One week ago: I detect a leaking hose under the bathroom wash basin. Fortunately it was only the fitting that needed to be screwed on a little tighter.

Sunday: the water filter (under-sink twin system, in the kitchen) is leaking badly. Repair attempts showed that the plastic filter housings had developed cracks and were about to start spraying water big-time.

Sunday, part 2: So I bunkered some 20l of filtered water in a plastic water bladder, just to tide me over until the filter was back in operation. However, the collapsible water canister has also suffered a puncture and leaked almost as badly as the filter.

Monday: I checked with the original supplier of the kit (7 years later, and the local company is still thriving, a good sign) and it turns out that the cheap filter housings that I ordered in 2004 should be replaced every 5 years or thereabouts. I ordered the (marginally pricier) premium housings on Tuesday, got them on Wednesday and all is well again.

I heartily endorse PSI Filters: they are local(-ish: Tasmanian), their prices are good, and their advice and customer service are great.