It did have dirty water from wheelie bin cleaning, we filtered the water Into the tank so it was more grey water. I gave it a quick clean out but it may need a better scrub and soak to get any loose mud / dirt out.
It had also got a few drill holes at the top of the tank from where we put pipes into it but it shouldn't affect the usage.
You can always come and have a look to see what you think of it and if it would be any good for pure water, Tuesday or Wednesday will be fine just let me know when you'll get here and ill make sure I'm in
Thanks
Ashley