Research and write 2 blog posts about sustainable water use

We are an online bathroom company and we'd like you to conduct research and write 2 x posts for our blog section. The blog posts will be aimed at people who are looking to be more sustainable and eco-friendly around the home/garden.

Blog post 1 will be about "How to use rainwater around your home and garden". Including how rain water can be collected and how it can be put to use in all aspects of your home, from the garden, to kitchens and bathrooms. We would like to see some research go into this, e.g. why it's a good idea to do this in UK, why saving water is beneficial, are there any organisations who can help you do this, are new build homes doing this? Is this something that is done better in other parts of the world?

Blog post 2 will be about "How to reuse grey water from your bath, sink or washing machine". Why is it good to re-use water from around the home? Explain why this water is safe to reuse and how it differs from toilet water (which can't be reused). How can this be done (e.g. where and how would it be collected). We'd like to see research conducted on how this is done elsewhere in the world, where water is scarce, whether there are any organisations who can help with this?

We'd like somewhere between 2,000 to 3,000 words for each blog post please. British English (not American) and targeted towards the British market. So, fine to use examples from other parts of the world, but bear in mind that a British reader would need to relate to it.

No need to be overly technical. Clear, explanatory language is fine to use.

Tone of voice guide available.