Hi guys and gals - just wanted to share my experience of the Travel Tap water filter and the Supalite Waterbag.
I've been using the Travel Tap water filter for a couple of years now (mainly Brecon and Dartmoor) and have found it to be a truly dependable piece of kit. I tend to use it to filter for two people (which means we only need to take a litre of water each). However, I've been on the lookout for an alternative which doesn't require quite so much effort for 2 people.
It turns out that Drinksafe (makers of the Travel Tap) also have a water filter bag (available as the Supalite and the Maxi). In essence the filter bags are dry bags that you fill with water and hang from a tree / post / hiking pole and allow the water to gravity feed through a hose and water filter cartridge.
I purchased the Supalite bag (perfect for small groups) and have used it a couple of times in Dartmoor (where the water is frequently heavy with sediment and strong peat taste). The Supalite filters out everything (delivering around 300-400ml of water per minute with zero effort). The quality of the components are top notch so I can easliy recommend the product.
I'd also like to say a very big thank you to Giles (the chap who runs www.drinksafe-systems.co.uk) who was incredibly helpful and went well past the routine customer service we expect these days.